Windows 10 Security Technical Implementation Guide

Version

WN10-00-000005

Vuln IDs

V-63319

Rule IDs

SV-77809r3_rule

Features such as Credential Guard use virtualization based security to protect information that could be used in credential theft attacks if compromised. There are a number of system requirements that must be met in order for Credential Guard to be configured and enabled properly. Virtualization based security and Credential Guard are only available with Windows 10 Enterprise 64-bit version.

Checks: C-64053r3_chk

Verify domain-joined systems are using Windows 10 Enterprise Edition 64-bit version. For standalone systems, this is NA. Open "Settings". Select "System", then "About". If "Edition" is not "Windows 10 Enterprise", this is a finding. If "System type" is not "64-bit operating system…", this is a finding.

Fix: F-69237r2_fix

Use Windows 10 Enterprise 64-bit version for domain-joined systems.

b

Users must be prevented from changing installation options.

CM-11 - Medium - CCI-001812 - V-63321 - SV-77811r1_rule

RMF Control

CM-11

Severity

M

CCI

CCI-001812

Version

WN10-CC-000310

Vuln IDs

V-63321

Rule IDs

SV-77811r1_rule

Installation options for applications are typically controlled by administrators. This setting prevents users from changing installation options that may bypass security features.

Checks: C-64055r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\Installer\ Value Name: EnableUserControl Value Type: REG_DWORD Value: 0

Fix: F-69239r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Installer >> "Allow user control over installs" to "Disabled".

b

Windows 10 domain-joined systems must have a Trusted Platform Module (TPM) enabled and ready for use.

CM-6 - Medium - CCI-000366 - V-63323 - SV-77813r6_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-00-000010

Vuln IDs

V-63323

Rule IDs

SV-77813r6_rule

Credential Guard uses virtualization based security to protect information that could be used in credential theft attacks if compromised. There are a number of system requirements that must be met in order for Credential Guard to be configured and enabled properly. Without a TPM enabled and ready for use, Credential Guard keys are stored in a less secure method using software.

Checks: C-94059r4_chk

Verify domain-joined systems have a TPM enabled and ready for use. For standalone systems, this is NA. Virtualization based security, including Credential Guard, currently cannot be implemented in virtual desktop implementations (VDI) due to specific supporting requirements including a TPM, UEFI with Secure Boot, and the capability to run the Hyper-V feature within the virtual desktop. For VDIs where the virtual desktop instance is deleted or refreshed upon logoff, this is NA. Verify the system has a TPM and is ready for use. Run "tpm.msc". Review the sections in the center pane. "Status" must indicate it has been configured with a message such as "The TPM is ready for use" or "The TPM is on and ownership has been taken". TPM Manufacturer Information - Specific Version = 2.0 or 1.2 If a TPM is not found or is not ready for use, this is a finding.

Fix: F-71517r1_fix

For standalone systems, this is NA. Virtualization based security, including Credential Guard, currently cannot be implemented in virtual desktop implementations (VDI) due to specific supporting requirements including a TPM, UEFI with Secure Boot, and the capability to run the Hyper-V feature within the virtual desktop. For VDIs where the virtual desktop instance is deleted or refreshed upon logoff, this is NA. Ensure domain-joined systems must have a Trusted Platform Module (TPM) that is configured for use. (Versions 2.0 or 1.2 support Credential Guard.) The TPM must be enabled in the firmware. Run "tpm.msc" for configuration options in Windows.

c

The Windows Installer Always install with elevated privileges must be disabled.

CM-11 - High - CCI-001812 - V-63325 - SV-77815r1_rule

RMF Control

CM-11

Severity

H

CCI

CCI-001812

Version

WN10-CC-000315

Vuln IDs

V-63325

Rule IDs

SV-77815r1_rule

Standard user accounts must not be granted elevated privileges. Enabling Windows Installer to elevate privileges when installing applications can allow malicious persons and applications to gain full control of a system.

Checks: C-64059r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\Installer\ Value Name: AlwaysInstallElevated Value Type: REG_DWORD Value: 0

Fix: F-69243r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Installer >> "Always install with elevated privileges" to "Disabled".

b

Users must be notified if a web-based program attempts to install software.

CM-6 - Medium - CCI-000366 - V-63329 - SV-77819r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000320

Vuln IDs

V-63329

Rule IDs

SV-77819r1_rule

Web-based programs may attempt to install malicious software on a system. Ensuring users are notified if a web-based program attempts to install software allows them to refuse the installation.

Checks: C-64061r1_chk

The default behavior is for Internet Explorer to warn users and select whether to allow or refuse installation when a web-based program attempts to install software on the system. If the registry value name below does not exist, this is not a finding. If it exists and is configured with a value of "0", this is not a finding. If it exists and is configured with a value of "1", this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\Installer\ Value Name: SafeForScripting Value Type: REG_DWORD Value: 0 (or if the Value Name does not exist)

Fix: F-69245r1_fix

The default behavior is for Internet Explorer to warn users and select whether to allow or refuse installation when a web-based program attempts to install software on the system. If this needs to be corrected, configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Installer >> "Prevent Internet Explorer security prompt for Windows Installer scripts" to "Not Configured" or "Disabled".

b

Automatically signing in the last interactive user after a system-initiated restart must be disabled.

CM-6 - Medium - CCI-000366 - V-63333 - SV-77823r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000325

Vuln IDs

V-63333

Rule IDs

SV-77823r1_rule

Windows can be configured to automatically sign the user back in after a Windows Update restart. Some protections are in place to help ensure this is done in a secure fashion; however, disabling this will prevent the caching of credentials for this purpose and also ensure the user is aware of the restart.

Checks: C-64067r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ Value Name: DisableAutomaticRestartSignOn Value Type: REG_DWORD Value: 1

Fix: F-69251r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Logon Options >> "Sign-in last interactive user automatically after a system-initiated restart" to "Disabled".

c

The Windows Remote Management (WinRM) client must not use Basic authentication.

MA-4 - High - CCI-000877 - V-63335 - SV-77825r1_rule

RMF Control

MA-4

Severity

H

CCI

CCI-000877

Version

WN10-CC-000330

Vuln IDs

V-63335

Rule IDs

SV-77825r1_rule

Basic authentication uses plain text passwords that could be used to compromise a system.

Checks: C-64071r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\WinRM\Client\ Value Name: AllowBasic Value Type: REG_DWORD Value: 0

Fix: F-69255r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Remote Management (WinRM) >> WinRM Client >> "Allow Basic authentication" to "Disabled".

b

Windows 10 information systems must use BitLocker to encrypt all disks to protect the confidentiality and integrity of all information at rest.

SC-28 - Medium - CCI-001199 - V-63337 - SV-77827r4_rule

RMF Control

SC-28

Severity

M

CCI

CCI-001199

Version

WN10-00-000030

Vuln IDs

V-63337

Rule IDs

SV-77827r4_rule

If data at rest is unencrypted, it is vulnerable to disclosure. Even if the operating system enforces permissions on data access, an adversary can remove non-volatile memory and read it directly, thereby circumventing operating system controls. Encrypting the data ensures that confidentiality is protected even when the operating system is not running.

Checks: C-94061r1_chk

Verify all Windows 10 information systems (including SIPRNET) employ BitLocker for full disk encryption. If full disk encryption using BitLocker is not implemented, this is a finding. Verify BitLocker is turned on for the operating system drive and any fixed data drives. Open "BitLocker Drive Encryption" from the Control Panel. If the operating system drive or any fixed data drives have "Turn on BitLocker", this is a finding. NOTE: An alternate encryption application may be used in lieu of BitLocker providing it is configured for full disk encryption and satisfies the pre-boot authentication requirements (WN10-00-000031 and WN10-00-000032).

Fix: F-100987r1_fix

Enable full disk encryption on all information systems (including SIPRNET) using BitLocker. BitLocker, included in Windows, can be enabled in the Control Panel under "BitLocker Drive Encryption" as well as other management tools. NOTE: An alternate encryption application may be used in lieu of BitLocker providing it is configured for full disk encryption and satisfies the pre-boot authentication requirements (WN10-00-000031 and WN10-00-000032).

b

The Windows Remote Management (WinRM) client must not allow unencrypted traffic.

MA-4 - Medium - CCI-002890 - V-63339 - SV-77829r1_rule

RMF Control

MA-4

Severity

M

CCI

CCI-002890

Version

WN10-CC-000335

Vuln IDs

V-63339

Rule IDs

SV-77829r1_rule

Unencrypted remote access to a system can allow sensitive information to be compromised. Windows remote management connections must be encrypted to prevent this.

Checks: C-64075r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\WinRM\Client\ Value Name: AllowUnencryptedTraffic Value Type: REG_DWORD Value: 0

Fix: F-69259r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Remote Management (WinRM) >> WinRM Client >> "Allow unencrypted traffic" to "Disabled".

b

The Windows Remote Management (WinRM) client must not use Digest authentication.

MA-4 - Medium - CCI-000877 - V-63341 - SV-77831r2_rule

RMF Control

MA-4

Severity

M

CCI

CCI-000877

Version

WN10-CC-000360

Vuln IDs

V-63341

Rule IDs

SV-77831r2_rule

Digest authentication is not as strong as other options and may be subject to man-in-the-middle attacks.

Checks: C-64079r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\WinRM\Client\ Value Name: AllowDigest Value Type: REG_DWORD Value: 0

Fix: F-69263r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Remote Management (WinRM) >> WinRM Client >> "Disallow Digest authentication" to "Enabled".

b

Windows 10 must employ automated mechanisms to determine the state of system components with regard to flaw remediation using the following frequency: continuously, where HBSS is used; 30 days, for any additional internal network scans not covered by HBSS; and annually, for external scans by Computer Network Defense Service Provider (CNDSP).

SI-2 - Medium - CCI-001233 - V-63343 - SV-77833r2_rule

RMF Control

SI-2

Severity

M

CCI

CCI-001233

Version

WN10-00-000025

Vuln IDs

V-63343

Rule IDs

SV-77833r2_rule

An approved tool for continuous network scanning must be installed and configured to run. Without the use of automated mechanisms to scan for security flaws on a continuous and/or periodic basis, the operating system or other system components may remain vulnerable to the exploits presented by undetected software flaws. To support this requirement, the operating system may have an integrated solution incorporating continuous scanning using HBSS and periodic scanning using other tools, as specified in the requirement.

Checks: C-93975r1_chk

Verify DoD approved HBSS software is installed, configured, and properly operating. Ask the operator to document the HBSS software installation and configuration. If the operator is not able to provide a documented configuration for an installed HBSS or if the HBSS software is not properly configured, maintained, or used, this is a finding.

Fix: F-100903r1_fix

Install DoD approved HBSS software and ensure it is operating continuously.

b

The operating system must employ a deny-all, permit-by-exception policy to allow the execution of authorized software programs.

CM-7 - Medium - CCI-001774 - V-63345 - SV-77835r3_rule

RMF Control

CM-7

Severity

M

CCI

CCI-001774

Version

WN10-00-000035

Vuln IDs

V-63345

Rule IDs

SV-77835r3_rule

Utilizing a whitelist provides a configuration management method for allowing the execution of only authorized software. Using only authorized software decreases risk by limiting the number of potential vulnerabilities. The organization must identify authorized software programs and only permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting.

Checks: C-69225r4_chk

This is applicable to unclassified systems; for other systems this is NA. Verify the operating system employs a deny-all, permit-by-exception policy to allow the execution of authorized software programs. This must include packaged apps such as the universals apps installed by default on systems. If an application whitelisting program is not in use on the system, this is a finding. Configuration of whitelisting applications will vary by the program. AppLocker is a whitelisting application built into Windows 10 Enterprise. A deny-by-default implementation is initiated by enabling any AppLocker rules within a category, only allowing what is specified by defined rules. If AppLocker is used, perform the following to view the configuration of AppLocker: Run "PowerShell". Execute the following command, substituting [c:\temp\file.xml] with a location and file name appropriate for the system: Get-AppLockerPolicy -Effective -XML > c:\temp\file.xml This will produce an xml file with the effective settings that can be viewed in a browser or opened in a program such as Excel for review. Implementation guidance for AppLocker is available in the NSA paper "Application Whitelisting using Microsoft AppLocker" at the following link: https://www.iad.gov/iad/library/ia-guidance/tech-briefs/application-whitelisting-using-microsoft-applocker.cfm

Fix: F-69267r3_fix

Configure an application whitelisting program to employ a deny-all, permit-by-exception policy to allow the execution of authorized software programs. Configuration of whitelisting applications will vary by the program. AppLocker is a whitelisting application built into Windows 10 Enterprise. If AppLocker is used, it is configured through group policy in Computer Configuration >> Windows Settings >> Security Settings >> Application Control Policies >> AppLocker. Implementation guidance for AppLocker is available in the NSA paper "Application Whitelisting using Microsoft AppLocker" at the following link: https://www.iad.gov/iad/library/ia-guidance/tech-briefs/application-whitelisting-using-microsoft-applocker.cfm

c

The Windows Remote Management (WinRM) service must not use Basic authentication.

MA-4 - High - CCI-000877 - V-63347 - SV-77837r1_rule

RMF Control

MA-4

Severity

H

CCI

CCI-000877

Version

WN10-CC-000345

Vuln IDs

V-63347

Rule IDs

SV-77837r1_rule

Basic authentication uses plain text passwords that could be used to compromise a system.

Checks: C-64081r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\WinRM\Service\ Value Name: AllowBasic Value Type: REG_DWORD Value: 0

Fix: F-69265r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Remote Management (WinRM) >> WinRM Service >> "Allow Basic authentication" to "Disabled".

c

Windows 10 systems must be maintained at a supported servicing level.

CM-6 - High - CCI-000366 - V-63349 - SV-77839r10_rule

RMF Control

CM-6

Severity

H

CCI

Version

WN10-00-000040

Vuln IDs

V-63349

Rule IDs

SV-77839r10_rule

Windows 10 is maintained by Microsoft at servicing levels for specific periods of time to support Windows as a Service. Systems at unsupported servicing levels or releases will not receive security updates for new vulnerabilities which leaves them subject to exploitation. New versions with feature updates are planned to be released on a semi-annual basis with an estimated support timeframe of 18 to 30 months depending on the release. Support for previously released versions has been extended for Enterprise editions. A separate servicing branch intended for special purpose systems is the Long-Term Servicing Channel (LTSC, formerly Branch - LTSB) which will receive security updates for 10 years but excludes feature updates.

Checks: C-94063r2_chk

Run "winver.exe". If the "About Windows" dialog box does not display: "Microsoft Windows Version 1709 (OS Build 16299.0)" or greater, this is a finding. Note: Microsoft has extended support for previous versions providing critical and important updates for Windows 10 Enterprise. Microsoft scheduled end of support dates for current Semi-Annual Channel versions: v1703 - 8 October 2019 v1709 - 14 April 2020 v1803 - 10 November 2020 v1809 - 13 April 2021 v1903 - 8 December 2020 No preview versions will be used in a production environment. Special purpose systems using the Long-Term Servicing Branch\Channel (LTSC\B) may be at following versions which are not a finding: v1507 (Build 10240) v1607 (Build 14393) v1809 (Build 17763)

Fix: F-98031r3_fix

Update systems on the Semi-Annual Channel to "Microsoft Windows Version 1709 (OS Build 16299.0)" or greater. It is recommended systems be upgraded to the most recently released version. Special purpose systems using the Long-Term Servicing Branch\Channel (LTSC\B) may be at the following versions: v1507 (Build 10240) v1607 (Build 14393) v1809 (Build 17763)

c

The Windows 10 system must use an anti-virus program.

CM-6 - High - CCI-000366 - V-63351 - SV-77841r4_rule

RMF Control

CM-6

Severity

H

CCI

Version

WN10-00-000045

Vuln IDs

V-63351

Rule IDs

SV-77841r4_rule

Malicious software can establish a base on individual desktops and servers. Employing an automated mechanism to detect this type of software will aid in elimination of the software from the operating system.

Checks: C-76169r1_chk

Verify an anti-virus solution is installed on the system. The anti-virus solution may be bundled with an approved host-based security solution. If there is no anti-virus solution installed on the system, this is a finding.

Fix: F-83183r1_fix

Install an anti-virus solution on the system.

c

Local volumes must be formatted using NTFS.

AC-3 - High - CCI-000213 - V-63353 - SV-77843r2_rule

RMF Control

AC-3

Severity

H

CCI

Version

WN10-00-000050

Vuln IDs

V-63353

Rule IDs

SV-77843r2_rule

The ability to set access permissions and auditing is critical to maintaining the security and proper access controls of a system. To support this, volumes must be formatted using the NTFS file system.

Checks: C-73999r1_chk

Run "Computer Management". Navigate to Storage >> Disk Management. If the "File System" column does not indicate "NTFS" for each volume assigned a drive letter, this is a finding. This does not apply to system partitions such the Recovery and EFI System Partition.

Fix: F-69273r1_fix

Format all local volumes to use NTFS.

b

Alternate operating systems must not be permitted on the same system.

CM-6 - Medium - CCI-000366 - V-63355 - SV-77845r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-00-000055

Vuln IDs

V-63355

Rule IDs

SV-77845r1_rule

Allowing other operating systems to run on a secure system may allow security to be circumvented.

Checks: C-64093r1_chk

Verify the system does not include other operating system installations. Run "Advanced System Settings". Select the "Advanced" tab. Click the "Settings" button in the "Startup and Recovery" section. If the drop-down list box "Default operating system:" shows any operating system other than Windows 10, this is a finding.

Fix: F-69275r1_fix

Ensure Windows 10 is the only operating system on a device. Remove alternate operating systems.

b

Non system-created file shares on a system must limit access to groups that require it.

SC-4 - Medium - CCI-001090 - V-63357 - SV-77847r1_rule

RMF Control

SC-4

Severity

M

CCI

Version

WN10-00-000060

Vuln IDs

V-63357

Rule IDs

SV-77847r1_rule

Shares which provide network access, should not typically exist on a workstation except for system-created administrative shares, and could potentially expose sensitive information. If a share is necessary, share permissions, as well as NTFS permissions, must be reconfigured to give the minimum access to those accounts that require it.

Checks: C-64095r1_chk

Non system-created shares should not typically exist on workstations. If only system-created shares exist on the system this is NA. Run "Computer Management". Navigate to System Tools >> Shared Folders >> Shares. If the only shares listed are "ADMIN$", "C$" and "IPC$", this is NA. (Selecting Properties for system-created shares will display a message that it has been shared for administrative purposes.) Right click any non-system-created shares. Select "Properties". Select the "Share Permissions" tab. Verify the necessity of any shares found. If the file shares have not been reconfigured to restrict permissions to the specific groups or accounts that require access, this is a finding. Select the "Security" tab. If the NTFS permissions have not been reconfigured to restrict permissions to the specific groups or accounts that require access, this is a finding.

Fix: F-69277r1_fix

If a non system-created share is required on a system, configure the share and NTFS permissions to limit access to the specific groups or accounts that require it. Remove any unnecessary non-system created shares.

a

Unused accounts must be disabled or removed from the system after 35 days of inactivity.

IA-4 - Low - CCI-000795 - V-63359 - SV-77849r1_rule

RMF Control

IA-4

Severity

L

CCI

CCI-000795

Version

WN10-00-000065

Vuln IDs

V-63359

Rule IDs

SV-77849r1_rule

Outdated or unused accounts provide penetration points that may go undetected. Inactive accounts must be deleted if no longer necessary or, if still required, disable until needed.

Checks: C-64097r1_chk

Run "PowerShell". Copy the lines below to the PowerShell window and enter. "([ADSI]('WinNT://{0}' -f $env:COMPUTERNAME)).Children | Where { $_.SchemaClassName -eq 'user' } | ForEach { $user = ([ADSI]$_.Path) $lastLogin = $user.Properties.LastLogin.Value $enabled = ($user.Properties.UserFlags.Value -band 0x2) -ne 0x2 if ($lastLogin -eq $null) { $lastLogin = 'Never' } Write-Host $user.Name $lastLogin $enabled }" This will return a list of local accounts with the account name, last logon, and if the account is enabled (True/False). For example: User1 10/31/2015 5:49:56 AM True Review the list to determine the finding validity for each account reported. Exclude the following accounts: Built-in administrator account (Disabled, SID ending in 500) Built-in guest account (Disabled, SID ending in 501) Built-in DefaultAccount (Disabled, SID ending in 503) Local administrator account If any enabled accounts have not been logged on to within the past 35 days, this is a finding. Inactive accounts that have been reviewed and deemed to be required must be documented with the ISSO.

Fix: F-69279r1_fix

Regularly review local accounts and verify their necessity. Disable or delete any active accounts that have not been used in the last 35 days.

c

Only accounts responsible for the administration of a system must have Administrator rights on the system.

AC-6 - High - CCI-002235 - V-63361 - SV-77851r2_rule

RMF Control

AC-6

Severity

H

CCI

Version

WN10-00-000070

Vuln IDs

V-63361

Rule IDs

SV-77851r2_rule

An account that does not have Administrator duties must not have Administrator rights. Such rights would allow the account to bypass or modify required security restrictions on that machine and make it vulnerable to attack. System administrators must log on to systems only using accounts with the minimum level of authority necessary. For domain-joined workstations, the Domain Admins group must be replaced by a domain workstation administrator group (see V-36434 in the Active Directory Domain STIG). Restricting highly privileged accounts from the local Administrators group helps mitigate the risk of privilege escalation resulting from credential theft attacks. Standard user accounts must not be members of the local administrators group.

Checks: C-81365r1_chk

Run "Computer Management". Navigate to System Tools >> Local Users and Groups >> Groups. Review the members of the Administrators group. Only the appropriate administrator groups or accounts responsible for administration of the system may be members of the group. For domain-joined workstations, the Domain Admins group must be replaced by a domain workstation administrator group. Standard user accounts must not be members of the local administrator group. If prohibited accounts are members of the local administrators group, this is a finding. The built-in Administrator account or other required administrative accounts would not be a finding.

Fix: F-88437r1_fix

Configure the system to include only administrator groups or accounts that are responsible for the system in the local Administrators group. For domain-joined workstations, the Domain Admins group must be replaced by a domain workstation administrator group. Remove any standard user accounts.

b

Only accounts responsible for the backup operations must be members of the Backup Operators group.

CM-6 - Medium - CCI-000366 - V-63363 - SV-77853r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-00-000075

Vuln IDs

V-63363

Rule IDs

SV-77853r1_rule

Backup Operators are able to read and write to any file in the system, regardless of the rights assigned to it. Backup and restore rights permit users to circumvent the file access restrictions present on NTFS disk drives for backup and restore purposes. Members of the Backup Operators group must have separate logon accounts for performing backup duties.

Checks: C-64101r1_chk

Run "Computer Management". Navigate to System Tools >> Local Users and Groups >> Groups. Review the members of the Backup Operators group. If the group contains no accounts, this is not a finding. If the group contains any accounts, the accounts must be specifically for backup functions. If the group contains any standard user accounts used for performing normal user tasks, this is a finding.

Fix: F-69283r1_fix

Create separate accounts for backup operations for users with this privilege.

b

Only authorized user accounts must be allowed to create or run virtual machines on Windows 10 systems.

CM-7 - Medium - CCI-000381 - V-63365 - SV-77855r3_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-00-000080

Vuln IDs

V-63365

Rule IDs

SV-77855r3_rule

Allowing other operating systems to run on a secure system may allow users to circumvent security. For Hyper-V, preventing unauthorized users from being assigned to the Hyper-V Administrators group will prevent them from accessing or creating virtual machines on the system. The Hyper-V Hypervisor is used by Virtualization Based Security features such as Credential Guard on Windows 10; however, it is not the full Hyper-V installation.

Checks: C-94005r1_chk

If a hosted hypervisor (Hyper-V, VMware Workstation, etc.) is installed on the system, verify only authorized user accounts are allowed to run virtual machines. For Hyper-V, Run "Computer Management". Navigate to System Tools >> Local Users and Groups >> Groups. Double click on "Hyper-V Administrators". If any unauthorized groups or user accounts are listed in "Members:", this is a finding. For hosted hypervisors other than Hyper-V, verify only authorized user accounts have access to run the virtual machines. Restrictions may be enforced by access to the physical system, software restriction policies, or access restrictions built in to the application. If any unauthorized groups or user accounts have access to create or run virtual machines, this is a finding. All users authorized to create or run virtual machines must be documented with the ISSM/ISSO. Accounts nested within group accounts must be documented as individual accounts and not the group accounts.

Fix: F-100933r1_fix

For Hyper-V, remove any unauthorized groups or user accounts from the "Hyper-V Administrators" group. For hosted hypervisors other than Hyper-V, restrict access to create or run virtual machines to authorized user accounts only.

a

Standard local user accounts must not exist on a system in a domain.

CM-6 - Low - CCI-000366 - V-63367 - SV-77857r2_rule

RMF Control

CM-6

Severity

L

CCI

Version

WN10-00-000085

Vuln IDs

V-63367

Rule IDs

SV-77857r2_rule

To minimize potential points of attack, local user accounts, other than built-in accounts and local administrator accounts, must not exist on a workstation in a domain. Users must log onto workstations in a domain with their domain accounts.

Checks: C-80207r1_chk

Run "Computer Management". Navigate to System Tools >> Local Users and Groups >> Users. If local users other than the accounts listed below exist on a workstation in a domain, this is a finding. Built-in Administrator account (Disabled) Built-in Guest account (Disabled) Built-in DefaultAccount (Disabled) Built-in defaultuser0 (Disabled) Built-in WDAGUtilityAccount (Disabled) Local administrator account(s) All of the built-in accounts may not exist on a system, depending on the Windows 10 version.

Fix: F-69287r1_fix

Limit local user accounts on domain-joined systems. Remove any unauthorized local accounts.

b

The Windows Remote Management (WinRM) service must not allow unencrypted traffic.

MA-4 - Medium - CCI-002890 - V-63369 - SV-77859r1_rule

RMF Control

MA-4

Severity

M

CCI

CCI-002890

Version

WN10-CC-000350

Vuln IDs

V-63369

Rule IDs

SV-77859r1_rule

Unencrypted remote access to a system can allow sensitive information to be compromised. Windows remote management connections must be encrypted to prevent this.

Checks: C-64109r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\WinRM\Service\ Value Name: AllowUnencryptedTraffic Value Type: REG_DWORD Value: 0

Fix: F-69289r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Remote Management (WinRM) >> WinRM Service >> "Allow unencrypted traffic" to "Disabled".

b

Accounts must be configured to require password expiration.

IA-5 - Medium - CCI-000199 - V-63371 - SV-77861r1_rule

RMF Control

IA-5

Severity

M

CCI

CCI-000199

Version

WN10-00-000090

Vuln IDs

V-63371

Rule IDs

SV-77861r1_rule

Passwords that do not expire increase exposure with a greater probability of being discovered or cracked.

Checks: C-64111r1_chk

Run "Computer Management". Navigate to System Tools >> Local Users and Groups >> Users. Double click each active account. If "Password never expires" is selected for any account, this is a finding.

Fix: F-69291r1_fix

Configure all passwords to expire. Run "Computer Management". Navigate to System Tools >> Local Users and Groups >> Users. Double click each active account. Ensure "Password never expires" is not checked on all active accounts.

b

Permissions for system files and directories must conform to minimum requirements.

AC-3 - Medium - CCI-002165 - V-63373 - SV-77863r2_rule

RMF Control

AC-3

Severity

M

CCI

CCI-002165

Version

WN10-00-000095

Vuln IDs

V-63373

Rule IDs

SV-77863r2_rule

Changing the system's file and directory permissions allows the possibility of unauthorized and anonymous modification to the operating system and installed applications.

Checks: C-77003r1_chk

The default file system permissions are adequate when the Security Option "Network access: Let Everyone permissions apply to anonymous users" is set to "Disabled" (WN10-SO-000160). If the default file system permissions are maintained and the referenced option is set to "Disabled", this is not a finding. Verify the default permissions for the sample directories below. Non-privileged groups such as Users or Authenticated Users must not have greater than Read & execute permissions except where noted as defaults. (Individual accounts must not be used to assign permissions.) Viewing in File Explorer: Select the "Security" tab, and the "Advanced" button. C:\ Type - "Allow" for all Inherited from - "None" for all Principal - Access - Applies to Administrators - Full control - This folder, subfolders and files SYSTEM - Full control - This folder, subfolders and files Users - Read & execute - This folder, subfolders and files Authenticated Users - Modify - Subfolders and files only Authenticated Users - Create folders / append data - This folder only \Program Files Type - "Allow" for all Inherited from - "None" for all Principal - Access - Applies to TrustedInstaller - Full control - This folder and subfolders SYSTEM - Modify - This folder only SYSTEM - Full control - Subfolders and files only Administrators - Modify - This folder only Administrators - Full control - Subfolders and files only Users - Read & execute - This folder, subfolders and files CREATOR OWNER - Full control - Subfolders and files only ALL APPLICATION PACKAGES - Read & execute - This folder, subfolders and files ALL RESTRICTED APPLICATION PACKAGES - Read & execute - This folder, subfolders and files \Windows Type - "Allow" for all Inherited from - "None" for all Principal - Access - Applies to TrustedInstaller - Full control - This folder and subfolders SYSTEM - Modify - This folder only SYSTEM - Full control - Subfolders and files only Administrators - Modify - This folder only Administrators - Full control - Subfolders and files only Users - Read & execute - This folder, subfolders and files CREATOR OWNER - Full control - Subfolders and files only ALL APPLICATION PACKAGES - Read & execute - This folder, subfolders and files ALL RESTRICTED APPLICATION PACKAGES - Read & execute - This folder, subfolders and files Alternately use icacls. Run "CMD" as administrator. Enter "icacls" followed by the directory. icacls c:\ icacls "c:\program files" icacls c:\windows The following results will be displayed as each is entered: c:\ BUILTIN\Administrators:(OI)(CI)(F) NT AUTHORITY\SYSTEM:(OI)(CI)(F) BUILTIN\Users:(OI)(CI)(RX) NT AUTHORITY\Authenticated Users:(OI)(CI)(IO)(M) NT AUTHORITY\Authenticated Users:(AD) Mandatory Label\High Mandatory Level:(OI)(NP)(IO)(NW) Successfully processed 1 files; Failed processing 0 files c:\program files NT SERVICE\TrustedInstaller:(F) NT SERVICE\TrustedInstaller:(CI)(IO)(F) NT AUTHORITY\SYSTEM:(M) NT AUTHORITY\SYSTEM:(OI)(CI)(IO)(F) BUILTIN\Administrators:(M) BUILTIN\Administrators:(OI)(CI)(IO)(F) BUILTIN\Users:(RX) BUILTIN\Users:(OI)(CI)(IO)(GR,GE) CREATOR OWNER:(OI)(CI)(IO)(F) APPLICATION PACKAGE AUTHORITY\ALL APPLICATION PACKAGES:(RX) APPLICATION PACKAGE AUTHORITY\ALL APPLICATION PACKAGES:(OI)(CI)(IO)(GR,GE) APPLICATION PACKAGE AUTHORITY\ALL RESTRICTED APPLICATION PACKAGES:(RX) APPLICATION PACKAGE AUTHORITY\ALL RESTRICTED APPLICATION PACKAGES:(OI)(CI)(IO)(GR,GE) Successfully processed 1 files; Failed processing 0 files c:\windows NT SERVICE\TrustedInstaller:(F) NT SERVICE\TrustedInstaller:(CI)(IO)(F) NT AUTHORITY\SYSTEM:(M) NT AUTHORITY\SYSTEM:(OI)(CI)(IO)(F) BUILTIN\Administrators:(M) BUILTIN\Administrators:(OI)(CI)(IO)(F) BUILTIN\Users:(RX) BUILTIN\Users:(OI)(CI)(IO)(GR,GE) CREATOR OWNER:(OI)(CI)(IO)(F) APPLICATION PACKAGE AUTHORITY\ALL APPLICATION PACKAGES:(RX) APPLICATION PACKAGE AUTHORITY\ALL APPLICATION PACKAGES:(OI)(CI)(IO)(GR,GE) APPLICATION PACKAGE AUTHORITY\ALL RESTRICTED APPLICATION PACKAGES:(RX) APPLICATION PACKAGE AUTHORITY\ALL RESTRICTED APPLICATION PACKAGES:(OI)(CI)(IO)(GR,GE) Successfully processed 1 files; Failed processing 0 files

Fix: F-69295r1_fix

Maintain the default file system permissions and configure the Security Option: "Network access: Let everyone permissions apply to anonymous users" to "Disabled" (WN10-SO-000160).

b

The Windows Remote Management (WinRM) service must not store RunAs credentials.

IA-11 - Medium - CCI-002038 - V-63375 - SV-77865r1_rule

RMF Control

IA-11

Severity

M

CCI

Version

WN10-CC-000355

Vuln IDs

V-63375

Rule IDs

SV-77865r1_rule

Storage of administrative credentials could allow unauthorized access. Disallowing the storage of RunAs credentials for Windows Remote Management will prevent them from being used with plug-ins.

Checks: C-64113r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\WinRM\Service\ Value Name: DisableRunAs Value Type: REG_DWORD Value: 1

Fix: F-69293r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Remote Management (WinRM) >> WinRM Service >> "Disallow WinRM from storing RunAs credentials" to "Enabled".

c

Internet Information System (IIS) or its subcomponents must not be installed on a workstation.

CM-7 - High - CCI-000381 - V-63377 - SV-77867r1_rule

RMF Control

CM-7

Severity

H

CCI

Version

WN10-00-000100

Vuln IDs

V-63377

Rule IDs

SV-77867r1_rule

Installation of Internet Information System (IIS) may allow unauthorized internet services to be hosted. Websites must only be hosted on servers that have been designed for that purpose and can be adequately secured.

Checks: C-64117r1_chk

IIS is not installed by default. Verify it has not been installed on the system. Run "Programs and Features". Select "Turn Windows features on or off". If the entries for "Internet Information Services" or "Internet Information Services Hostable Web Core" are selected, this is a finding. If an application requires IIS or a subset to be installed to function, this needs be documented with the ISSO. In addition, any applicable requirements from the IIS STIG must be addressed.

Fix: F-69297r1_fix

Uninstall "Internet Information Services" or "Internet Information Services Hostable Web Core" from the system.

b

Simple Network Management Protocol (SNMP) must not be installed on the system.

CM-7 - Medium - CCI-000382 - V-63381 - SV-77871r1_rule

RMF Control

CM-7

Severity

M

CCI

CCI-000382

Version

WN10-00-000105

Vuln IDs

V-63381

Rule IDs

SV-77871r1_rule

Some protocols and services do not support required security features, such as encrypting passwords or traffic.

Checks: C-64121r1_chk

"SNMP" is not installed by default. Verify it has not been installed. Navigate to the Windows\System32 directory. If the "SNMP" application exists, this is a finding.

Fix: F-69301r1_fix

Uninstall "Simple Network Management Protocol (SNMP)" from the system. Run "Programs and Features". Select "Turn Windows Features on or off". De-select "Simple Network Management Protocol (SNMP)".

b

Simple TCP/IP Services must not be installed on the system.

CM-7 - Medium - CCI-000381 - V-63383 - SV-77873r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-00-000110

Vuln IDs

V-63383

Rule IDs

SV-77873r1_rule

Some protocols and services do not support required security features, such as encrypting passwords or traffic.

Checks: C-64125r1_chk

"Simple TCP/IP Services" is not installed by default. Verify it has not been installed. Run "Services.msc". If "Simple TCP/IP Services" is listed, this is a finding.

Fix: F-69305r1_fix

Uninstall "Simple TCPIP Services (i.e. echo, daytime etc)" from the system. Run "Programs and Features". Select "Turn Windows Features on or off". De-select "Simple TCPIP Services (i.e. echo, daytime etc)".

b

The Telnet Client must not be installed on the system.

CM-7 - Medium - CCI-000382 - V-63385 - SV-77875r1_rule

RMF Control

CM-7

Severity

M

CCI

CCI-000382

Version

WN10-00-000115

Vuln IDs

V-63385

Rule IDs

SV-77875r1_rule

Some protocols and services do not support required security features, such as encrypting passwords or traffic.

Checks: C-64127r1_chk

The "Telnet Client" is not installed by default. Verify it has not been installed. Navigate to the Windows\System32 directory. If the "telnet" application exists, this is a finding.

Fix: F-69307r1_fix

Uninstall "Telnet Client" from the system. Run "Programs and Features". Select "Turn Windows Features on or off". De-select "Telnet Client".

b

The TFTP Client must not be installed on the system.

CM-7 - Medium - CCI-000382 - V-63389 - SV-77879r1_rule

RMF Control

CM-7

Severity

M

CCI

CCI-000382

Version

WN10-00-000120

Vuln IDs

V-63389

Rule IDs

SV-77879r1_rule

Some protocols and services do not support required security features, such as encrypting passwords or traffic.

Checks: C-64133r1_chk

The "TFTP Client" is not installed by default. Verify it has not been installed. Navigate to the Windows\System32 directory. If the "TFTP" application exists, this is a finding.

Fix: F-69313r1_fix

Uninstall "TFTP Client" from the system. Run "Programs and Features". Select "Turn Windows Features on or off". De-select "TFTP Client".

b

Software certificate installation files must be removed from Windows 10.

CM-6 - Medium - CCI-000366 - V-63393 - SV-77883r2_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-00-000130

Vuln IDs

V-63393

Rule IDs

SV-77883r2_rule

Use of software certificates and their accompanying installation files for end users to access resources is less secure than the use of hardware-based certificates.

Checks: C-94065r1_chk

Search all drives for *.p12 and *.pfx files. If any files with these extensions exist, this is a finding. This does not apply to server-based applications that have a requirement for .p12 certificate files (e.g., Oracle Wallet Manager) or Adobe PreFlight certificate files. Some applications create files with extensions of .p12 that are not certificate installation files. Removal of non-certificate installation files from systems is not required. These must be documented with the ISSO.

Fix: F-100989r1_fix

Remove any certificate installation files (*.p12 and *.pfx) found on a system. Note: This does not apply to server-based applications that have a requirement for .p12 certificate files (e.g., Oracle Wallet Manager) or Adobe PreFlight certificate files.

b

A host-based firewall must be installed and enabled on the system.

CM-6 - Medium - CCI-000366 - V-63399 - SV-77889r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-00-000135

Vuln IDs

V-63399

Rule IDs

SV-77889r1_rule

A firewall provides a line of defense against attack, allowing or blocking inbound and outbound connections based on a set of rules.

Checks: C-64147r1_chk

Determine if a host-based firewall is installed and enabled on the system. If a host-based firewall is not installed and enabled on the system, this is a finding. The configuration requirements will be determined by the applicable firewall STIG.

Fix: F-69327r1_fix

Install and enable a host-based firewall on the system.

b

Inbound exceptions to the firewall on Windows 10 domain workstations must only allow authorized remote management hosts.

CM-6 - Medium - CCI-000366 - V-63403 - SV-77893r2_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-00-000140

Vuln IDs

V-63403

Rule IDs

SV-77893r2_rule

Allowing inbound access to domain workstations from other systems may allow lateral movement across systems if credentials are compromised. Limiting inbound connections only from authorized remote management systems will help limit this exposure.

Checks: C-94067r1_chk

Verify firewall exceptions to inbound connections on domain workstations include only authorized remote management hosts. If allowed inbound exceptions are not limited to authorized remote management hosts, this is a finding. Review inbound firewall exceptions. Computer Configuration >> Windows Settings >> Security Settings >> Windows Defender Firewall with Advanced Security >> Windows Defender Firewall with Advanced Security >> Inbound Rules (this link will be in the right pane) For any inbound rules that allow connections view the Scope for Remote IP address. This may be defined as an IP address, subnet, or range. The rule must apply to all firewall profiles. If a third-party firewall is used, ensure comparable settings are in place.

Fix: F-100991r1_fix

Configure firewall exceptions to inbound connections on domain workstations to include only authorized remote management hosts. Configure only inbound connection exceptions for authorized remote management hosts. Computer Configuration >> Windows Settings >> Security Settings >> Windows Defender Firewall with Advanced Security >> Windows Defender Firewall with Advanced Security >> Inbound Rules (this link will be in the right pane) For any inbound rules that allow connections, configure the Scope for Remote IP address to those of authorized remote management hosts. This may be defined as an IP address, subnet or range. Apply the rule to all firewall profiles. If a third-party firewall is used, configure inbound exceptions to only include authorized remote management hosts.

b

Windows 10 account lockout duration must be configured to 15 minutes or greater.

AC-7 - Medium - CCI-002238 - V-63405 - SV-77895r2_rule

RMF Control

AC-7

Severity

M

CCI

CCI-002238

Version

WN10-AC-000005

Vuln IDs

V-63405

Rule IDs

SV-77895r2_rule

The account lockout feature, when enabled, prevents brute-force password attacks on the system. This parameter specifies the amount of time that an account will remain locked after the specified number of failed logon attempts.

Checks: C-74549r2_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Account Lockout Policy. If the "Account lockout duration" is less than "15" minutes (excluding "0"), this is a finding. Configuring this to "0", requiring an administrator to unlock the account, is more restrictive and is not a finding.

Fix: F-81277r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Account Lockout Policy >> "Account lockout duration" to "15" minutes or greater. A value of "0" is also acceptable, requiring an administrator to unlock the account.

b

The number of allowed bad logon attempts must be configured to 3 or less.

AC-7 - Medium - CCI-000044 - V-63409 - SV-77899r1_rule

RMF Control

AC-7

Severity

M

CCI

CCI-000044

Version

WN10-AC-000010

Vuln IDs

V-63409

Rule IDs

SV-77899r1_rule

The account lockout feature, when enabled, prevents brute-force password attacks on the system. The higher this value is, the less effective the account lockout feature will be in protecting the local system. The number of bad logon attempts must be reasonably small to minimize the possibility of a successful password attack, while allowing for honest errors made during a normal user logon.

Checks: C-64157r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Account Lockout Policy. If the "Account lockout threshold" is "0" or more than "3" attempts, this is a finding.

Fix: F-69337r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Account Lockout Policy >> "Account lockout threshold" to "3" or less invalid logon attempts (excluding "0" which is unacceptable).

b

The period of time before the bad logon counter is reset must be configured to 15 minutes.

AC-7 - Medium - CCI-000044 - V-63413 - SV-77903r1_rule

RMF Control

AC-7

Severity

M

CCI

CCI-000044

Version

WN10-AC-000015

Vuln IDs

V-63413

Rule IDs

SV-77903r1_rule

The account lockout feature, when enabled, prevents brute-force password attacks on the system. This parameter specifies the period of time that must pass after failed logon attempts before the counter is reset to 0. The smaller this value is, the less effective the account lockout feature will be in protecting the local system.

Checks: C-64161r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Account Lockout Policy. If the "Reset account lockout counter after" value is less than "15" minutes, this is a finding.

Fix: F-69341r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Account Lockout Policy >> "Reset account lockout counter after" to "15" minutes.

b

The password history must be configured to 24 passwords remembered.

IA-5 - Medium - CCI-000200 - V-63415 - SV-77905r2_rule

RMF Control

IA-5

Severity

M

CCI

CCI-000200

Version

WN10-AC-000020

Vuln IDs

V-63415

Rule IDs

SV-77905r2_rule

A system is more vulnerable to unauthorized access when system users recycle the same password several times without being required to change a password to a unique password on a regularly scheduled basis. This enables users to effectively negate the purpose of mandating periodic password changes. The default value is 24 for Windows domain systems. DoD has decided this is the appropriate value for all Windows systems.

Checks: C-64163r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy. If the value for "Enforce password history" is less than "24" passwords remembered, this is a finding.

Fix: F-69343r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy >> "Enforce password history" to "24" passwords remembered.

b

The maximum password age must be configured to 60 days or less.

IA-5 - Medium - CCI-000199 - V-63419 - SV-77909r1_rule

RMF Control

IA-5

Severity

M

CCI

CCI-000199

Version

WN10-AC-000025

Vuln IDs

V-63419

Rule IDs

SV-77909r1_rule

The longer a password is in use, the greater the opportunity for someone to gain unauthorized knowledge of the passwords. Scheduled changing of passwords hinders the ability of unauthorized system users to crack passwords and gain access to a system.

Checks: C-64167r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy. If the value for the "Maximum password age" is greater than "60" days, this is a finding. If the value is set to "0" (never expires), this is a finding.

Fix: F-69347r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy >> "Maximum Password Age" to "60" days or less (excluding "0" which is unacceptable).

b

The minimum password age must be configured to at least 1 day.

IA-5 - Medium - CCI-000198 - V-63421 - SV-77911r1_rule

RMF Control

IA-5

Severity

M

CCI

CCI-000198

Version

WN10-AC-000030

Vuln IDs

V-63421

Rule IDs

SV-77911r1_rule

Permitting passwords to be changed in immediate succession within the same day allows users to cycle passwords through their history database. This enables users to effectively negate the purpose of mandating periodic password changes.

Checks: C-64169r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy. If the value for the "Minimum password age" is less than "1" day, this is a finding.

Fix: F-69349r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy >> "Minimum Password Age" to at least "1" day.

b

Passwords must, at a minimum, be 14 characters.

IA-5 - Medium - CCI-000205 - V-63423 - SV-77913r1_rule

RMF Control

IA-5

Severity

M

CCI

CCI-000205

Version

WN10-AC-000035

Vuln IDs

V-63423

Rule IDs

SV-77913r1_rule

Information systems not protected with strong password schemes (including passwords of minimum length) provide the opportunity for anyone to crack the password, thus gaining access to the system and compromising the device, information, or the local network.

Checks: C-64171r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy. If the value for the "Minimum password length," is less than "14" characters, this is a finding.

Fix: F-69351r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy >> "Minimum password length" to "14" characters.

b

The built-in Microsoft password complexity filter must be enabled.

IA-5 - Medium - CCI-000192 - V-63427 - SV-77917r1_rule

RMF Control

IA-5

Severity

M

CCI

CCI-000192

Version

WN10-AC-000040

Vuln IDs

V-63427

Rule IDs

SV-77917r1_rule

The use of complex passwords increases their strength against guessing and brute-force attacks. This setting configures the system to verify that newly created passwords conform to the Windows password complexity policy.

Checks: C-64175r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy. If the value for "Password must meet complexity requirements" is not set to "Enabled", this is a finding. If the site is using a password filter that requires this setting be set to "Disabled" for the filter to be used, this would not be considered a finding.

Fix: F-69355r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy >> "Password must meet complexity requirements" to "Enabled".

c

Reversible password encryption must be disabled.

IA-5 - High - CCI-000196 - V-63429 - SV-77919r1_rule

RMF Control

IA-5

Severity

H

CCI

CCI-000196

Version

WN10-AC-000045

Vuln IDs

V-63429

Rule IDs

SV-77919r1_rule

Storing passwords using reversible encryption is essentially the same as storing clear-text versions of the passwords. For this reason, this policy must never be enabled.

Checks: C-64177r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy. If the value for "Store password using reversible encryption" is not set to "Disabled", this is a finding.

Fix: F-69357r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy >> "Store passwords using reversible encryption" to "Disabled".

b

The system must be configured to audit Account Logon - Credential Validation failures.

AU-12 - Medium - CCI-000172 - V-63431 - SV-77921r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000005

Vuln IDs

V-63431

Rule IDs

SV-77921r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Credential validation records events related to validation tests on credentials for a user account logon.

Checks: C-64181r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Account Logon >> Credential Validation - Failure

Fix: F-69359r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Account Logon >> "Audit Credential Validation" with "Failure" selected.

b

The system must be configured to audit Account Logon - Credential Validation successes.

AU-12 - Medium - CCI-000172 - V-63435 - SV-77925r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000010

Vuln IDs

V-63435

Rule IDs

SV-77925r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Credential validation records events related to validation tests on credentials for a user account logon.

Checks: C-64183r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Account Logon >> Credential Validation - Success

Fix: F-69363r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Account Logon >> "Audit Credential Validation" with "Success" selected.

b

The system must be configured to audit Account Management - Security Group Management successes.

AC-2 - Medium - CCI-000018 - V-63445 - SV-77935r1_rule

RMF Control

AC-2

Severity

M

CCI

CCI-000018

Version

WN10-AU-000030

Vuln IDs

V-63445

Rule IDs

SV-77935r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Security Group Management records events such as creating, deleting or changing of security groups, including changes in group members.

Checks: C-64193r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Account Management >> Security Group Management - Success

Fix: F-69373r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Account Management >> "Audit Security Group Management" with "Success" selected.

b

The system must be configured to audit Account Management - User Account Management failures.

AC-2 - Medium - CCI-000018 - V-63447 - SV-77937r1_rule

RMF Control

AC-2

Severity

M

CCI

CCI-000018

Version

WN10-AU-000035

Vuln IDs

V-63447

Rule IDs

SV-77937r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. User Account Management records events such as creating, changing, deleting, renaming, disabling, or enabling user accounts.

Checks: C-64195r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Account Management >> User Account Management - Failure

Fix: F-69375r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Account Management >> "Audit User Account Management" with "Failure" selected.

b

The system must be configured to audit Account Management - User Account Management successes.

AC-2 - Medium - CCI-000018 - V-63449 - SV-77939r1_rule

RMF Control

AC-2

Severity

M

CCI

CCI-000018

Version

WN10-AU-000040

Vuln IDs

V-63449

Rule IDs

SV-77939r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. User Account Management records events such as creating, changing, deleting, renaming, disabling, or enabling user accounts.

Checks: C-64197r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Account Management >> User Account Management - Success

Fix: F-69377r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Account Management >> "Audit User Account Management" with "Success" selected.

b

The system must be configured to audit Detailed Tracking - PNP Activity successes.

AU-12 - Medium - CCI-000172 - V-63451 - SV-77941r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000045

Vuln IDs

V-63451

Rule IDs

SV-77941r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Plug and Play activity records events related to the successful connection of external devices.

Checks: C-64199r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*" Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Detailed Tracking >> Plug and Play Events - Success

Fix: F-69379r1_fix

Computer Configuration >> Windows Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Detailed Tracking >> "Audit PNP Activity" with "Success" selected.

b

The system must be configured to audit Detailed Tracking - Process Creation successes.

AU-12 - Medium - CCI-000172 - V-63453 - SV-77943r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000050

Vuln IDs

V-63453

Rule IDs

SV-77943r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Process creation records events related to the creation of a process and the source.

Checks: C-64201r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Detailed Tracking >> Process Creation - Success

Fix: F-69381r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Detailed Tracking >> "Audit Process Creation" with "Success" selected.

b

The system must be configured to audit Logon/Logoff - Group Membership successes.

AU-12 - Medium - CCI-000172 - V-63457 - SV-77947r2_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000060

Vuln IDs

V-63457

Rule IDs

SV-77947r2_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Group Membership records information related to the group membership of a user's logon token.

Checks: C-64205r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*" Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Logon/Logoff >> Group Membership - Success

Fix: F-69385r2_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Logon/Logoff >> "Audit Group Membership" with "Success" selected.

b

The system must be configured to audit Logon/Logoff - Logoff successes.

AC-17 - Medium - CCI-000067 - V-63459 - SV-77951r1_rule

RMF Control

AC-17

Severity

M

CCI

CCI-000067

Version

WN10-AU-000065

Vuln IDs

V-63459

Rule IDs

SV-77951r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Logoff records user logoffs. If this is an interactive logoff, it is recorded on the local system. If it is to a network share, it is recorded on the system accessed.

Checks: C-64207r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Logon/Logoff >> Logoff - Success

Fix: F-69387r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Logon/Logoff >> "Audit Logoff" with "Success" selected.

b

The system must be configured to audit Logon/Logoff - Logon failures.

AC-17 - Medium - CCI-000067 - V-63463 - SV-77953r1_rule

RMF Control

AC-17

Severity

M

CCI

CCI-000067

Version

WN10-AU-000070

Vuln IDs

V-63463

Rule IDs

SV-77953r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Logon records user logons. If this is an interactive logon, it is recorded on the local system. If it is to a network share, it is recorded on the system accessed.

Checks: C-64211r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Logon/Logoff >> Logon - Failure

Fix: F-69391r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Logon/Logoff >> "Audit Logon" with "Failure" selected.

b

The system must be configured to audit Logon/Logoff - Logon successes.

AC-17 - Medium - CCI-000067 - V-63467 - SV-77957r1_rule

RMF Control

AC-17

Severity

M

CCI

CCI-000067

Version

WN10-AU-000075

Vuln IDs

V-63467

Rule IDs

SV-77957r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Logon records user logons. If this is an interactive logon, it is recorded on the local system. If it is to a network share, it is recorded on the system accessed.

Checks: C-64215r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Logon/Logoff >> Logon - Success

Fix: F-69395r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Logon/Logoff >> "Audit Logon" with "Success" selected.

b

The system must be configured to audit Logon/Logoff - Special Logon successes.

AU-12 - Medium - CCI-000172 - V-63469 - SV-77959r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000080

Vuln IDs

V-63469

Rule IDs

SV-77959r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Special Logon records special logons which have administrative privileges and can be used to elevate processes.

Checks: C-64219r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Logon/Logoff >> Special Logon - Success

Fix: F-69399r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Logon/Logoff >> "Audit Special Logon" with "Success" selected.

b

The system must be configured to audit Object Access - Removable Storage failures.

AU-12 - Medium - CCI-000172 - V-63471 - SV-77961r2_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000085

Vuln IDs

V-63471

Rule IDs

SV-77961r2_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Auditing object access for removable media records events related to access attempts on file system objects on removable storage devices.

Checks: C-79559r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*" Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Object Access >> Removable Storage - Failure Some virtual machines may generate excessive audit events for access to the virtual hard disk itself when this setting is enabled. This may be set to Not Configured in such cases and would not be a finding. This must be documented with the ISSO to include mitigations such as monitoring or restricting any actual removable storage connected to the VM.

Fix: F-69401r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Object Access >> "Audit Removable Storage" with "Failure" selected.

b

The system must be configured to audit Object Access - Removable Storage successes.

AU-12 - Medium - CCI-000172 - V-63473 - SV-77963r2_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000090

Vuln IDs

V-63473

Rule IDs

SV-77963r2_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Auditing object access for removable media records events related to access attempts on file system objects on removable storage devices.

Checks: C-79561r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*" Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Object Access >> Removable Storage - Success Some virtual machines may generate excessive audit events for access to the virtual hard disk itself when this setting is enabled. This may be set to Not Configured in such cases and would not be a finding. This must be documented with the ISSO to include mitigations such as monitoring or restricting any actual removable storage connected to the VM.

Fix: F-69403r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Object Access >> "Audit Removable Storage" with "Success" selected.

b

The system must be configured to audit Policy Change - Audit Policy Change successes.

AU-12 - Medium - CCI-000172 - V-63479 - SV-77969r2_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000100

Vuln IDs

V-63479

Rule IDs

SV-77969r2_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Policy Change records events related to changes in audit policy.

Checks: C-64229r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Policy Change >> Audit Policy Change - Success

Fix: F-69409r2_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Policy Change >> "Audit Audit Policy Change" with "Success" selected.

b

The system must be configured to audit Policy Change - Authentication Policy Change successes.

AU-12 - Medium - CCI-000172 - V-63481 - SV-77971r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000105

Vuln IDs

V-63481

Rule IDs

SV-77971r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Authentication Policy Change records events related to changes in authentication policy including Kerberos policy and Trust changes.

Checks: C-64231r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Policy Change >> Authentication Policy Change - Success

Fix: F-69411r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Policy Change >> "Audit Authentication Policy Change" with "Success" selected.

b

The system must be configured to audit Privilege Use - Sensitive Privilege Use failures.

AU-12 - Medium - CCI-000172 - V-63483 - SV-77973r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000110

Vuln IDs

V-63483

Rule IDs

SV-77973r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Sensitive Privilege Use records events related to use of sensitive privileges, such as "Act as part of the operating system" or "Debug programs".

Checks: C-64235r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Privilege Use >> Sensitive Privilege Use - Failure

Fix: F-69413r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Privilege Use >> "Audit Sensitive Privilege Use" with "Failure" selected.

b

The system must be configured to audit Privilege Use - Sensitive Privilege Use successes.

AU-12 - Medium - CCI-000172 - V-63487 - SV-77977r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000115

Vuln IDs

V-63487

Rule IDs

SV-77977r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Sensitive Privilege Use records events related to use of sensitive privileges, such as "Act as part of the operating system" or "Debug programs".

Checks: C-64237r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Privilege Use >> Sensitive Privilege Use - Success

Fix: F-69417r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Privilege Use >> "Audit Sensitive Privilege Use" with "Success" selected.

b

The system must be configured to audit System - IPSec Driver failures.

AU-12 - Medium - CCI-000172 - V-63491 - SV-77981r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000120

Vuln IDs

V-63491

Rule IDs

SV-77981r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. IPSec Driver records events related to the IPSec Driver such as dropped packets.

Checks: C-64241r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: System >> IPSec Driver - Failure

Fix: F-69421r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> System >> "Audit IPSec Driver" with "Failure" selected.

b

The system must be configured to audit System - Other System Events successes.

AU-12 - Medium - CCI-000172 - V-63499 - SV-77989r2_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000130

Vuln IDs

V-63499

Rule IDs

SV-77989r2_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Other System Events records information related to cryptographic key operations and the Windows Firewall service.

Checks: C-64249r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*" Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: System >> Other System Events - Success

Fix: F-69429r2_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> System >> "Audit Other System Events" with "Success" selected.

b

The system must be configured to audit System - Other System Events failures.

AU-12 - Medium - CCI-000172 - V-63503 - SV-77993r2_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000135

Vuln IDs

V-63503

Rule IDs

SV-77993r2_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Other System Events records information related to cryptographic key operations and the Windows Firewall service.

Checks: C-64253r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*" Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: System >> Other System Events - Failure

Fix: F-69433r2_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> System >> "Audit Other System Events" with "Failure" selected.

b

The system must be configured to audit System - Security State Change successes.

AU-12 - Medium - CCI-000172 - V-63507 - SV-77997r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000140

Vuln IDs

V-63507

Rule IDs

SV-77997r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Security State Change records events related to changes in the security state, such as startup and shutdown of the system.

Checks: C-64257r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: System >> Security State Change - Success

Fix: F-69437r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> System >> "Audit Security State Change" with "Success" selected.

b

The system must be configured to audit System - Security System Extension successes.

AU-12 - Medium - CCI-000172 - V-63513 - SV-78003r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000150

Vuln IDs

V-63513

Rule IDs

SV-78003r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Security System Extension records events related to extension code being loaded by the security subsystem.

Checks: C-64263r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: System >> Security System Extension - Success

Fix: F-69443r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> System >> "Audit Security System Extension" with "Success" selected.

b

The system must be configured to audit System - System Integrity failures.

AU-12 - Medium - CCI-000172 - V-63515 - SV-78005r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000155

Vuln IDs

V-63515

Rule IDs

SV-78005r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. System Integrity records events related to violations of integrity to the security subsystem.

Checks: C-64265r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: System >> System Integrity - Failure

Fix: F-69445r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> System >> "Audit System Integrity" with "Failure" selected.

b

The system must be configured to audit System - System Integrity successes.

AU-12 - Medium - CCI-000172 - V-63517 - SV-78007r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000160

Vuln IDs

V-63517

Rule IDs

SV-78007r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. System Integrity records events related to violations of integrity to the security subsystem.

Checks: C-64267r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: System >> System Integrity - Success

Fix: F-69447r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> System >> "Audit System Integrity" with "Success" selected.

b

The Application event log size must be configured to 32768 KB or greater.

AU-4 - Medium - CCI-001849 - V-63519 - SV-78009r1_rule

RMF Control

AU-4

Severity

M

CCI

CCI-001849

Version

WN10-AU-000500

Vuln IDs

V-63519

Rule IDs

SV-78009r1_rule

Inadequate log size will cause the log to fill up quickly. This may prevent audit events from being recorded properly and require frequent attention by administrative personnel.

Checks: C-64269r1_chk

If the system is configured to send audit records directly to an audit server, this is NA. This must be documented with the ISSO. If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\EventLog\Application\ Value Name: MaxSize Value Type: REG_DWORD Value: 0x00008000 (32768) (or greater)

Fix: F-69449r1_fix

If the system is configured to send audit records directly to an audit server, this is NA. This must be documented with the ISSO. Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Event Log Service >> Application >> "Specify the maximum log file size (KB)" to "Enabled" with a "Maximum Log Size (KB)" of "32768" or greater.

b

The Security event log size must be configured to 1024000 KB or greater.

AU-4 - Medium - CCI-001849 - V-63523 - SV-78013r2_rule

RMF Control

AU-4

Severity

M

CCI

CCI-001849

Version

WN10-AU-000505

Vuln IDs

V-63523

Rule IDs

SV-78013r2_rule

Inadequate log size will cause the log to fill up quickly. This may prevent audit events from being recorded properly and require frequent attention by administrative personnel.

Checks: C-79597r1_chk

If the system is configured to send audit records directly to an audit server, this is NA. This must be documented with the ISSO. If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\EventLog\Security\ Value Name: MaxSize Value Type: REG_DWORD Value: 0x000fa000 (1024000) (or greater)

Fix: F-86735r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Event Log Service >> Security >> "Specify the maximum log file size (KB)" to "Enabled" with a "Maximum Log Size (KB)" of "1024000" or greater. If the system is configured to send audit records directly to an audit server, documented with the ISSO.

b

The System event log size must be configured to 32768 KB or greater.

AU-4 - Medium - CCI-001849 - V-63527 - SV-78017r1_rule

RMF Control

AU-4

Severity

M

CCI

CCI-001849

Version

WN10-AU-000510

Vuln IDs

V-63527

Rule IDs

SV-78017r1_rule

Inadequate log size will cause the log to fill up quickly. This may prevent audit events from being recorded properly and require frequent attention by administrative personnel.

Checks: C-64277r1_chk

If the system is configured to send audit records directly to an audit server, this is NA. This must be documented with the ISSO. If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\EventLog\System\ Value Name: MaxSize Value Type: REG_DWORD Value: 0x00008000 (32768) (or greater)

Fix: F-69457r1_fix

If the system is configured to send audit records directly to an audit server, this is NA. This must be documented with the ISSO. Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Event Log Service >> System >> "Specify the maximum log file size (KB)" to "Enabled" with a "Maximum Log Size (KB)" of "32768" or greater.

b

Windows 10 permissions for the Application event log must prevent access by non-privileged accounts.

AU-9 - Medium - CCI-000162 - V-63533 - SV-78023r2_rule

RMF Control

AU-9

Severity

M

CCI

Version

WN10-AU-000515

Vuln IDs

V-63533

Rule IDs

SV-78023r2_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. The Application event log may be susceptible to tampering if proper permissions are not applied.

Checks: C-94069r1_chk

Verify the permissions on the Application event log (Application.evtx). Standard user accounts or groups must not have access. The default permissions listed below satisfy this requirement. Eventlog - Full Control SYSTEM - Full Control Administrators - Full Control The default location is the "%SystemRoot%\SYSTEM32\WINEVT\LOGS" directory. They may have been moved to another folder. If the permissions for these files are not as restrictive as the ACLs listed, this is a finding. NOTE: If "APPLICATION PACKAGE AUTHORITY\ALL APPLICATION PACKAGES" has Special Permissions, this would not be a finding.

Fix: F-69463r1_fix

Ensure the permissions on the Application event log (Application.evtx) are configured to prevent standard user accounts or groups from having access. The default permissions listed below satisfy this requirement. Eventlog - Full Control SYSTEM - Full Control Administrators - Full Control The default location is the "%SystemRoot%\SYSTEM32\WINEVT\LOGS" directory. If the location of the logs has been changed, when adding Eventlog to the permissions, it must be entered as "NT Service\Eventlog".

b

Windows 10 permissions for the Security event log must prevent access by non-privileged accounts.

AU-9 - Medium - CCI-000162 - V-63537 - SV-78027r2_rule

RMF Control

AU-9

Severity

M

CCI

Version

WN10-AU-000520

Vuln IDs

V-63537

Rule IDs

SV-78027r2_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. The Security event log may disclose sensitive information or be susceptible to tampering if proper permissions are not applied.

Checks: C-94071r1_chk

Verify the permissions on the Security event log (Security.evtx). Standard user accounts or groups must not have access. The default permissions listed below satisfy this requirement. Eventlog - Full Control SYSTEM - Full Control Administrators - Full Control The default location is the "%SystemRoot%\SYSTEM32\WINEVT\LOGS" directory. They may have been moved to another folder. If the permissions for these files are not as restrictive as the ACLs listed, this is a finding. NOTE: If "APPLICATION PACKAGE AUTHORITY\ALL APPLICATION PACKAGES" has Special Permissions, this would not be a finding.

Fix: F-69467r1_fix

Ensure the permissions on the Security event log (Security.evtx) are configured to prevent standard user accounts or groups from having access. The default permissions listed below satisfy this requirement. Eventlog - Full Control SYSTEM - Full Control Administrators - Full Control The default location is the "%SystemRoot%\SYSTEM32\WINEVT\LOGS" directory. If the location of the logs has been changed, when adding Eventlog to the permissions, it must be entered as "NT Service\Eventlog".

b

Windows 10 permissions for the System event log must prevent access by non-privileged accounts.

AU-9 - Medium - CCI-000162 - V-63541 - SV-78031r2_rule

RMF Control

AU-9

Severity

M

CCI

Version

WN10-AU-000525

Vuln IDs

V-63541

Rule IDs

SV-78031r2_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. The System event log may be susceptible to tampering if proper permissions are not applied.

Checks: C-94073r1_chk

Verify the permissions on the System event log (System.evtx). Standard user accounts or groups must not have access. The default permissions listed below satisfy this requirement. Eventlog - Full Control SYSTEM - Full Control Administrators - Full Control The default location is the "%SystemRoot%\SYSTEM32\WINEVT\LOGS" directory. They may have been moved to another folder. If the permissions for these files are not as restrictive as the ACLs listed, this is a finding. NOTE: If "APPLICATION PACKAGE AUTHORITY\ALL APPLICATION PACKAGES" has Special Permissions, this would not be a finding.

Fix: F-69471r1_fix

Ensure the permissions on the System event log (System.evtx) are configured to prevent standard user accounts or groups from having access. The default permissions listed below satisfy this requirement. Eventlog - Full Control SYSTEM - Full Control Administrators - Full Control The default location is the "%SystemRoot%\SYSTEM32\WINEVT\LOGS" directory. If the location of the logs has been changed, when adding Eventlog to the permissions, it must be entered as "NT Service\Eventlog".

b

Camera access from the lock screen must be disabled.

CM-7 - Medium - CCI-000381 - V-63545 - SV-78035r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-CC-000005

Vuln IDs

V-63545

Rule IDs

SV-78035r1_rule

Enabling camera access from the lock screen could allow for unauthorized use. Requiring logon will ensure the device is only used by authorized personnel.

Checks: C-64295r1_chk

If the device does not have a camera, this is NA. If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\Personalization\ Value Name: NoLockScreenCamera Value Type: REG_DWORD Value: 1

Fix: F-69475r1_fix

If the device does not have a camera, this is NA. Configure the policy value for Computer Configuration >> Administrative Templates >> Control Panel >> Personalization >> "Prevent enabling lock screen camera" to "Enabled".

b

The display of slide shows on the lock screen must be disabled.

CM-7 - Medium - CCI-000381 - V-63549 - SV-78039r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-CC-000010

Vuln IDs

V-63549

Rule IDs

SV-78039r1_rule

Slide shows that are displayed on the lock screen could display sensitive information to unauthorized personnel. Turning off this feature will limit access to the information to a logged on user.

Checks: C-64299r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\Personalization\ Value Name: NoLockScreenSlideshow Value Type: REG_DWORD Value: 1

Fix: F-69479r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Control Panel >> Personalization >> "Prevent enabling lock screen slide show" to "Enabled".

b

IPv6 source routing must be configured to highest protection.

CM-6 - Medium - CCI-000366 - V-63555 - SV-78045r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000020

Vuln IDs

V-63555

Rule IDs

SV-78045r1_rule

Configuring the system to disable IPv6 source routing protects against spoofing.

Checks: C-64305r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters\ Value Name: DisableIpSourceRouting Value Type: REG_DWORD Value: 2

Fix: F-69485r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MSS (Legacy) >> "MSS: (DisableIPSourceRouting IPv6) IP source routing protection level (protects against packet spoofing)" to "Highest protection, source routing is completely disabled". This policy setting requires the installation of the MSS-Legacy custom templates included with the STIG package. "MSS-Legacy.admx" and " MSS-Legacy.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

b

The system must be configured to prevent IP source routing.

CM-6 - Medium - CCI-000366 - V-63559 - SV-78049r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000025

Vuln IDs

V-63559

Rule IDs

SV-78049r1_rule

Configuring the system to disable IP source routing protects against spoofing.

Checks: C-64309r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\ Value Name: DisableIPSourceRouting Value Type: REG_DWORD Value: 2

Fix: F-69489r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MSS (Legacy) >> "MSS: (DisableIPSourceRouting) IP source routing protection level (protects against packet spoofing)" to "Highest protection, source routing is completely disabled". This policy setting requires the installation of the MSS-Legacy custom templates included with the STIG package. "MSS-Legacy.admx" and " MSS-Legacy.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

a

The system must be configured to prevent Internet Control Message Protocol (ICMP) redirects from overriding Open Shortest Path First (OSPF) generated routes.

CM-6 - Low - CCI-000366 - V-63563 - SV-78053r1_rule

RMF Control

CM-6

Severity

L

CCI

Version

WN10-CC-000030

Vuln IDs

V-63563

Rule IDs

SV-78053r1_rule

Allowing ICMP redirect of routes can lead to traffic not being routed properly. When disabled, this forces ICMP to be routed via shortest path first.

Checks: C-64313r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\ Value Name: EnableICMPRedirect Value Type: REG_DWORD Value: 0

Fix: F-69493r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MSS (Legacy) >> "MSS: (EnableICMPRedirect) Allow ICMP redirects to override OSPF generated routes" to "Disabled". This policy setting requires the installation of the MSS-Legacy custom templates included with the STIG package. "MSS-Legacy.admx" and " MSS-Legacy.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

a

The system must be configured to ignore NetBIOS name release requests except from WINS servers.

SC-5 - Low - CCI-002385 - V-63567 - SV-78057r1_rule

RMF Control

SC-5

Severity

L

CCI

CCI-002385

Version

WN10-CC-000035

Vuln IDs

V-63567

Rule IDs

SV-78057r1_rule

Configuring the system to ignore name release requests, except from WINS servers, prevents a denial of service (DoS) attack. The DoS consists of sending a NetBIOS name release request to the server for each entry in the server's cache, causing a response delay in the normal operation of the servers WINS resolution capability.

Checks: C-64317r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Services\Netbt\Parameters\ Value Name: NoNameReleaseOnDemand Value Type: REG_DWORD Value: 1

Fix: F-69497r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MSS (Legacy) >> "MSS: (NoNameReleaseOnDemand) Allow the computer to ignore NetBIOS name release requests except from WINS servers" to "Enabled". This policy setting requires the installation of the MSS-Legacy custom templates included with the STIG package. "MSS-Legacy.admx" and " MSS-Legacy.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

b

Insecure logons to an SMB server must be disabled.

CM-6 - Medium - CCI-000366 - V-63569 - SV-78059r2_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000040

Vuln IDs

V-63569

Rule IDs

SV-78059r2_rule

Insecure guest logons allow unauthenticated access to shared folders. Shared resources on a system must require authentication to establish proper access.

Checks: C-81357r2_chk

Windows 10 v1507 LTSB version does not include this setting; it is NA for those systems. If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\LanmanWorkstation\ Value Name: AllowInsecureGuestAuth Type: REG_DWORD Value: 0x00000000 (0)

Fix: F-69499r2_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Network >> Lanman Workstation >> "Enable insecure guest logons" to "Disabled".

b

Hardened UNC Paths must be defined to require mutual authentication and integrity for at least the \\*\SYSVOL and \\*\NETLOGON shares.

CM-6 - Medium - CCI-000366 - V-63577 - SV-78067r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000050

Vuln IDs

V-63577

Rule IDs

SV-78067r1_rule

Additional security requirements are applied to Universal Naming Convention (UNC) paths specified in Hardened UNC paths before allowing access them. This aids in preventing tampering with or spoofing of connections to these paths.

Checks: C-64327r1_chk

This requirement is applicable to domain-joined systems, for standalone systems this is NA. If the following registry values do not exist or are not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\NetworkProvider\HardenedPaths\ Value Name: \\*\NETLOGON Value Type: REG_SZ Value: RequireMutualAuthentication=1, RequireIntegrity=1 Value Name: \\*\SYSVOL Value Type: REG_SZ Value: RequireMutualAuthentication=1, RequireIntegrity=1 Additional entries would not be a finding.

Fix: F-69507r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Network >> Network Provider >> "Hardened UNC Paths" to "Enabled" with at least the following configured in "Hardened UNC Paths:" (click the "Show" button to display). Value Name: \\*\SYSVOL Value: RequireMutualAuthentication=1, RequireIntegrity=1 Value Name: \\*\NETLOGON Value: RequireMutualAuthentication=1, RequireIntegrity=1

b

The DoD Root CA certificates must be installed in the Trusted Root Store.

IA-5 - Medium - CCI-000185 - V-63579 - SV-78069r4_rule

RMF Control

IA-5

Severity

M

CCI

Version

WN10-PK-000005

Vuln IDs

V-63579

Rule IDs

SV-78069r4_rule

To ensure secure DoD websites and DoD-signed code are properly validated, the system must trust the DoD Root Certificate Authorities (CAs). The DoD root certificates will ensure that the trust chain is established for server certificates issued from the DoD CAs.

Checks: C-80175r4_chk

Verify the DoD Root CA certificates are installed as Trusted Root Certification Authorities. The certificates and thumbprints referenced below apply to unclassified systems; see PKE documentation for other networks. Run "PowerShell" as an administrator. Execute the following command: Get-ChildItem -Path Cert:Localmachine\root | Where Subject -Like "*DoD*" | FL Subject, Thumbprint, NotAfter If the following certificate "Subject" and "Thumbprint" information is not displayed, this is finding. If an expired certificate ("NotAfter" date) is not listed in the results, this is not a finding. Subject: CN=DoD Root CA 2, OU=PKI, OU=DoD, O=U.S. Government, C=US Thumbprint: 8C941B34EA1EA6ED9AE2BC54CF687252B4C9B561 NotAfter: 12/5/2029 Subject: CN=DoD Root CA 3, OU=PKI, OU=DoD, O=U.S. Government, C=US Thumbprint: D73CA91102A2204A36459ED32213B467D7CE97FB NotAfter: 12/30/2029 Subject: CN=DoD Root CA 4, OU=PKI, OU=DoD, O=U.S. Government, C=US Thumbprint: B8269F25DBD937ECAFD4C35A9838571723F2D026 NotAfter: 7/25/2032 Subject: CN=DoD Root CA 5, OU=PKI, OU=DoD, O=U.S. Government, C=US Thumbprint: 4ECB5CC3095670454DA1CBD410FC921F46B8564B NotAfter: 6/14/2041 Alternately use the Certificates MMC snap-in: Run "MMC". Select "File", "Add/Remove Snap-in". Select "Certificates", click "Add". Select "Computer account", click "Next". Select "Local computer: (the computer this console is running on)", click "Finish". Click "OK". Expand "Certificates" and navigate to "Trusted Root Certification Authorities >> Certificates". For each of the DoD Root CA certificates noted below: Right-click on the certificate and select "Open". Select the "Details" Tab. Scroll to the bottom and select "Thumbprint". If the DoD Root CA certificates below are not listed or the value for the "Thumbprint" field is not as noted, this is a finding. If an expired certificate ("Valid to" date) is not listed in the results, this is not a finding. DoD Root CA 2 Thumbprint: 8C941B34EA1EA6ED9AE2BC54CF687252B4C9B561 Valid to: Wednesday, December 5, 2029 DoD Root CA 3 Thumbprint: D73CA91102A2204A36459ED32213B467D7CE97FB Valid to: Sunday, December 30, 2029 DoD Root CA 4 Thumbprint: B8269F25DBD937ECAFD4C35A9838571723F2D026 Valid to: Sunday, July 25, 2032 DoD Root CA 5 Thumbprint: 4ECB5CC3095670454DA1CBD410FC921F46B8564B Valid to: Friday, June 14, 2041

Fix: F-87307r1_fix

Install the DoD Root CA certificates. DoD Root CA 2 DoD Root CA 3 DoD Root CA 4 DoD Root CA 5 The InstallRoot tool is available on IASE at http://iase.disa.mil/pki-pke/Pages/tools.aspx.

b

Simultaneous connections to the Internet or a Windows domain must be limited.

CM-6 - Medium - CCI-000366 - V-63581 - SV-78071r2_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000055

Vuln IDs

V-63581

Rule IDs

SV-78071r2_rule

Multiple network connections can provide additional attack vectors to a system and must be limited. The "Minimize the number of simultaneous connections to the Internet or a Windows Domain" setting prevents systems from automatically establishing multiple connections. When both wired and wireless connections are available, for example, the less preferred connection (typically wireless) will be disconnected.

Checks: C-64331r1_chk

The default behavior for "Minimize the number of simultaneous connections to the Internet or a Windows Domain" is "Enabled". If the registry value name below does not exist, this is not a finding. If it exists and is configured with a value of "1", this is not a finding. If it exists and is configured with a value of "0", this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\WcmSvc\GroupPolicy\ Value Name: fMinimizeConnections Value Type: REG_DWORD Value: 1 (or if the Value Name does not exist)

Fix: F-69511r1_fix

The default behavior for "Minimize the number of simultaneous connections to the Internet or a Windows Domain" is "Enabled". If this needs to be corrected, configure the policy value for Computer Configuration >> Administrative Templates >> Network >> Windows Connection Manager >> "Minimize the number of simultaneous connections to the Internet or a Windows Domain" to "Enabled".

b

The External Root CA certificates must be installed in the Trusted Root Store on unclassified systems.

IA-5 - Medium - CCI-000185 - V-63583 - SV-78073r3_rule

RMF Control

IA-5

Severity

M

CCI

Version

WN10-PK-000010

Vuln IDs

V-63583

Rule IDs

SV-78073r3_rule

To ensure secure websites protected with External Certificate Authority (ECA) server certificates are properly validated, the system must trust the ECA Root CAs. The ECA root certificates will ensure the trust chain is established for server certificates issued from the External CAs. This requirement only applies to unclassified systems.

Checks: C-80177r4_chk

Verify the ECA Root CA certificates are installed on unclassified systems as Trusted Root Certification Authorities. Run "PowerShell" as an administrator. Execute the following command: Get-ChildItem -Path Cert:Localmachine\root | Where Subject -Like "*ECA*" | FL Subject, Thumbprint, NotAfter If the following certificate "Subject" and "Thumbprint" information is not displayed, this is finding. If an expired certificate ("NotAfter" date) is not listed in the results, this is not a finding. Subject: CN=ECA Root CA 2, OU=ECA, O=U.S. Government, C=US Thumbprint: C313F919A6ED4E0E8451AFA930FB419A20F181E4 NotAfter: 3/30/2028 Subject: CN=ECA Root CA 4, OU=ECA, O=U.S. Government, C=US Thumbprint: 73E8BB08E337D6A5A6AEF90CFFDD97D9176CB582 NotAfter: 12/30/2029 Alternately use the Certificates MMC snap-in: Run "MMC". Select "File", "Add/Remove Snap-in". Select "Certificates", click "Add". Select "Computer account", click "Next". Select "Local computer: (the computer this console is running on)", click "Finish". Click "OK". Expand "Certificates" and navigate to "Trusted Root Certification Authorities >> Certificates". For each of the ECA Root CA certificates noted below: Right-click on the certificate and select "Open". Select the "Details" Tab. Scroll to the bottom and select "Thumbprint". If the ECA Root CA certificates below are not listed or the value for the "Thumbprint" field is not as noted, this is a finding. If an expired certificate ("Valid to" date) is not listed in the results, this is not a finding. ECA Root CA 2 Thumbprint: C313F919A6ED4E0E8451AFA930FB419A20F181E4 Valid to: Thursday, March 30, 2028 ECA Root CA 4 Thumbprint: 73E8BB08E337D6A5A6AEF90CFFDD97D9176CB582 Valid to: Sunday, December 30, 2029

Fix: F-76981r2_fix

Install the ECA Root CA certificates on unclassified systems. ECA Root CA 2 ECA Root CA 4 The InstallRoot tool is available on IASE at http://iase.disa.mil/pki-pke/Pages/tools.aspx.

b

Connections to non-domain networks when connected to a domain authenticated network must be blocked.

CM-6 - Medium - CCI-000366 - V-63585 - SV-78075r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000060

Vuln IDs

V-63585

Rule IDs

SV-78075r1_rule

Multiple network connections can provide additional attack vectors to a system and should be limited. When connected to a domain, communication must go through the domain connection.

Checks: C-64335r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\WcmSvc\GroupPolicy\ Value Name: fBlockNonDomain Value Type: REG_DWORD Value: 1

Fix: F-69515r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Network >> Windows Connection Manager >> "Prohibit connection to non-domain networks when connected to domain authenticated network" to "Enabled".

b

The DoD Interoperability Root CA cross-certificates must be installed in the Untrusted Certificates Store on unclassified systems.

IA-5 - Medium - CCI-000185 - V-63587 - SV-78077r5_rule

RMF Control

IA-5

Severity

M

CCI

Version

WN10-PK-000015

Vuln IDs

V-63587

Rule IDs

SV-78077r5_rule

To ensure users do not experience denial of service when performing certificate-based authentication to DoD websites due to the system chaining to a root other than DoD Root CAs, the DoD Interoperability Root CA cross-certificates must be installed in the Untrusted Certificate Store. This requirement only applies to unclassified systems.

Checks: C-91397r4_chk

Verify the DoD Interoperability cross-certificates are installed on unclassified systems as Untrusted Certificates. Run "PowerShell" as an administrator. Execute the following command: Get-ChildItem -Path Cert:Localmachine\disallowed | Where {$_.Issuer -Like "*DoD Interoperability*" -and $_.Subject -Like "*DoD*"} | FL Subject, Issuer, Thumbprint, NotAfter If the following certificate "Subject", "Issuer", and "Thumbprint", information is not displayed, this is finding. If an expired certificate ("NotAfter" date) is found, this is a finding. Subject: CN=DoD Root CA 2, OU=PKI, OU=DoD, O=U.S. Government, C=US Issuer: CN=DoD Interoperability Root CA 1, OU=PKI, OU=DoD, O=U.S. Government, C=US Thumbprint: 22BBE981F0694D246CC1472ED2B021DC8540A22F NotAfter: 9/6/2019 Subject: CN=DoD Root CA 3, OU=PKI, OU=DoD, O=U.S. Government, C=US Issuer: CN=DoD Interoperability Root CA 2, OU=PKI, OU=DoD, O=U.S. Government, C=US Thumbprint: AC06108CA348CC03B53795C64BF84403C1DBD341 NotAfter: 1/22/2022 Alternately use the Certificates MMC snap-in: Run "MMC". Select "File", "Add/Remove Snap-in". Select "Certificates", click "Add". Select "Computer account", click "Next". Select "Local computer: (the computer this console is running on)", click "Finish". Click "OK". Expand "Certificates" and navigate to "Untrusted Certificates >> Certificates". For each certificate with "DoD Root CA…" under "Issued To" and "DoD Interoperability Root CA…" under "Issued By": Right-click on the certificate and select "Open". Select the "Details" Tab. Scroll to the bottom and select "Thumbprint". If the certificates below are not listed or the value for the "Thumbprint" field is not as noted, this is a finding. If an expired certificate ("Valid to" date) is not listed in the results, this is not a finding. Issued To: DoD Root CA 2 Issued By: DoD Interoperability Root CA 1 Thumbprint: 22BBE981F0694D246CC1472ED2B021DC8540A22F Valid to: Friday, September 6, 2019 Issued To: DoD Root CA 3 Issued By: DoD Interoperability Root CA 2 Thumbprint: AC06108CA348CC03B53795C64BF84403C1DBD341 Valid to: Saturday, January 22, 2022

Fix: F-98441r3_fix

Install the DoD Interoperability Root CA cross-certificates on unclassified systems. Issued To - Issued By - Thumbprint DoD Root CA 2 - DoD Interoperability Root CA 1 - 22BBE981F0694D246CC1472ED2B021DC8540A22F DoD Root CA 3 - DoD Interoperability Root CA 2 - AC06108CA348CC03B53795C64BF84403C1DBD341 The certificates can be installed using the InstallRoot tool. The tool and user guide are available on IASE at http://iase.disa.mil/pki-pke/Pages/tools.aspx.

b

The US DoD CCEB Interoperability Root CA cross-certificates must be installed in the Untrusted Certificates Store on unclassified systems.

IA-5 - Medium - CCI-000185 - V-63589 - SV-78079r4_rule

RMF Control

IA-5

Severity

M

CCI

Version

WN10-PK-000020

Vuln IDs

V-63589

Rule IDs

SV-78079r4_rule

To ensure users do not experience denial of service when performing certificate-based authentication to DoD websites due to the system chaining to a root other than DoD Root CAs, the US DoD CCEB Interoperability Root CA cross-certificates must be installed in the Untrusted Certificate Store. This requirement only applies to unclassified systems.

Checks: C-91399r2_chk

Verify the US DoD CCEB Interoperability Root CA cross-certificate is installed on unclassified systems as an Untrusted Certificate. Run "PowerShell" as an administrator. Execute the following command: Get-ChildItem -Path Cert:Localmachine\disallowed | Where Issuer -Like "*CCEB Interoperability*" | FL Subject, Issuer, Thumbprint, NotAfter If the following certificate "Subject", "Issuer", and "Thumbprint", information is not displayed, this is finding. If an expired certificate ("NotAfter" date) is found, this is a finding. Subject: CN=DoD Root CA 3, OU=PKI, OU=DoD, O=U.S. Government, C=US Issuer: CN=US DoD CCEB Interoperability Root CA 2, OU=PKI, OU=DoD, O=U.S. Government, C=US Thumbprint: 929BF3196896994C0A201DF4A5B71F603FEFBF2E NotAfter: 9/27/2019 Alternately use the Certificates MMC snap-in: Run "MMC". Select "File", "Add/Remove Snap-in". Select "Certificates", click "Add". Select "Computer account", click "Next". Select "Local computer: (the computer this console is running on)", click "Finish". Click "OK". Expand "Certificates" and navigate to "Untrusted Certificates >> Certificates". For each certificate with "US DoD CCEB Interoperability Root CA …" under "Issued By": Right-click on the certificate and select "Open". Select the "Details" tab. Scroll to the bottom and select "Thumbprint". If the certificate below is not listed or the value for the "Thumbprint" field is not as noted, this is a finding. If an expired certificate ("Valid to" date) is not listed in the results, this is not a finding. Issued To: DoD Root CA 3 Issuer by: US DoD CCEB Interoperability Root CA 2 Thumbprint: 929BF3196896994C0A201DF4A5B71F603FEFBF2E Valid: Friday, September 27, 2019

Fix: F-98443r3_fix

Install the US DoD CCEB Interoperability Root CA cross-certificate on unclassified systems. Issued To - Issued By - Thumbprint DoD Root CA 3 - US DoD CCEB Interoperability Root CA 2 - 929BF3196896994C0A201DF4A5B71F603FEFBF2E The certificates can be installed using the InstallRoot tool. The tool and user guide are available on IASE at http://iase.disa.mil/pki-pke/Pages/tools.aspx.

b

Wi-Fi Sense must be disabled.

CM-6 - Medium - CCI-000366 - V-63591 - SV-78081r2_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000065

Vuln IDs

V-63591

Rule IDs

SV-78081r2_rule

Wi-Fi Sense automatically connects the system to known hotspots and networks that contacts have shared. It also allows the sharing of the system's known networks to contacts. Automatically connecting to hotspots and shared networks can expose a system to unsecured or potentially malicious systems.

Checks: C-81355r2_chk

This is NA as of v1803 of Windows 10; Wi-Fi sense is no longer available. If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\WcmSvc\wifinetworkmanager\config\ Value Name: AutoConnectAllowedOEM Type: REG_DWORD Value: 0x00000000 (0)

Fix: F-88431r2_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Network >> WLAN Service >> WLAN Settings>> "Allow Windows to automatically connect to suggested open hotspots, to networks shared by contacts, and to hotspots offering paid services" to "Disabled". v1507 LTSB does not include this group policy setting. It may be configured through other means such as using group policy from a later version of Windows 10 or a registry update.

b

Default permissions for the HKEY_LOCAL_MACHINE registry hive must be maintained.

AC-6 - Medium - CCI-002235 - V-63593 - SV-78083r2_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-RG-000005

Vuln IDs

V-63593

Rule IDs

SV-78083r2_rule

The registry is integral to the function, security, and stability of the Windows system. Changing the system's registry permissions allows the possibility of unauthorized and anonymous modification to the operating system.

Checks: C-91427r2_chk

Verify the default registry permissions for the keys note below of the HKEY_LOCAL_MACHINE hive. If any non-privileged groups such as Everyone, Users or Authenticated Users have greater than Read permission, this is a finding. Run "Regedit". Right click on the registry areas noted below. Select "Permissions..." and the "Advanced" button. HKEY_LOCAL_MACHINE\SECURITY Type - "Allow" for all Inherited from - "None" for all Principal - Access - Applies to SYSTEM - Full Control - This key and subkeys Administrators - Special - This key and subkeys HKEY_LOCAL_MACHINE\SOFTWARE Type - "Allow" for all Inherited from - "None" for all Principal - Access - Applies to Users - Read - This key and subkeys Administrators - Full Control - This key and subkeys SYSTEM - Full Control - This key and subkeys CREATOR OWNER - Full Control - This key and subkeys ALL APPLICATION PACKAGES - Read - This key and subkeys HKEY_LOCAL_MACHINE\SYSTEM Type - "Allow" for all Inherited from - "None" for all Principal - Access - Applies to Users - Read - This key and subkeys Administrators - Full Control - This key and subkeys SYSTEM - Full Control - This key and subkeys CREATOR OWNER - Full Control - This key and subkeys ALL APPLICATION PACKAGES - Read - This key and subkeys Other subkeys under the noted keys may also be sampled. There may be some instances where non-privileged groups have greater than Read permission. Microsoft has given Read permission to the SOFTWARE and SYSTEM registry keys in later versions of Windows 10 to the following SID, this is currently not a finding. S-1-15-3-1024-1065365936-1281604716-3511738428-1654721687-432734479-3232135806-4053264122-3456934681 If the defaults have not been changed, these are not a finding.

Fix: F-98471r1_fix

Maintain the default permissions for the HKEY_LOCAL_MACHINE registry hive. The default permissions of the higher level keys are noted below. HKEY_LOCAL_MACHINE\SECURITY Type - "Allow" for all Inherited from - "None" for all Principal - Access - Applies to SYSTEM - Full Control - This key and subkeys Administrators - Special - This key and subkeys HKEY_LOCAL_MACHINE\SOFTWARE Type - "Allow" for all Inherited from - "None" for all Principal - Access - Applies to Users - Read - This key and subkeys Administrators - Full Control - This key and subkeys SYSTEM - Full Control - This key and subkeys CREATOR OWNER - Full Control - This key and subkeys ALL APPLICATION PACKAGES - Read - This key and subkeys HKEY_LOCAL_MACHINE\SYSTEM Type - "Allow" for all Inherited from - "None" for all Principal - Access - Applies to Users - Read - This key and subkeys Administrators - Full Control - This key and subkeys SYSTEM - Full Control - This key and subkeys CREATOR OWNER - Full Control - This key and subkeys ALL APPLICATION PACKAGES - Read - This key and subkeys Microsoft has also given Read permission to the SOFTWARE and SYSTEM registry keys in later versions of Windows 10 to the following SID. S-1-15-3-1024-1065365936-1281604716-3511738428-1654721687-432734479-3232135806-4053264122-3456934681

a

Virtualization Based Security must be enabled on Windows 10 with the platform security level configured to Secure Boot or Secure Boot with DMA Protection.

CM-6 - Low - CCI-000366 - V-63595 - SV-78085r6_rule

RMF Control

CM-6

Severity

L

CCI

Version

WN10-CC-000070

Vuln IDs

V-63595

Rule IDs

SV-78085r6_rule

Virtualization Based Security (VBS) provides the platform for the additional security features, Credential Guard and Virtualization based protection of code integrity. Secure Boot is the minimum security level with DMA protection providing additional memory protection. DMA Protection requires a CPU that supports input/output memory management unit (IOMMU).

Checks: C-94075r1_chk

Confirm Virtualization Based Security is enabled and running with Secure Boot or Secure Boot and DMA Protection. For those devices that support virtualization based security (VBS) features, including Credential Guard or protection of code integrity, this must be enabled. If the system meets the hardware and firmware dependencies for enabling VBS but it is not enabled, this is a CAT III finding. Virtualization based security, including Credential Guard, currently cannot be implemented in virtual desktop implementations (VDI) due to specific supporting requirements including a TPM, UEFI with Secure Boot, and the capability to run the Hyper-V feature within the virtual desktop. For VDIs where the virtual desktop instance is deleted or refreshed upon logoff, this is NA. Run "PowerShell" with elevated privileges (run as administrator). Enter the following: "Get-CimInstance -ClassName Win32_DeviceGuard -Namespace root\Microsoft\Windows\DeviceGuard" If "RequiredSecurityProperties" does not include a value of "2" indicating "Secure Boot" (e.g., "{1, 2}"), this is a finding. If "Secure Boot and DMA Protection" is configured, "3" will also be displayed in the results (e.g., "{1, 2, 3}"). If "VirtualizationBasedSecurityStatus" is not a value of "2" indicating "Running", this is a finding. Alternately: Run "System Information". Under "System Summary", verify the following: If "Device Guard Virtualization based security" does not display "Running", this is finding. If "Device Guard Required Security Properties" does not display "Base Virtualization Support, Secure Boot", this is finding. If "Secure Boot and DMA Protection" is configured, "DMA Protection" will also be displayed (e.g., "Base Virtualization Support, Secure Boot, DMA Protection"). The policy settings referenced in the Fix section will configure the following registry values. However due to hardware requirements, the registry values alone do not ensure proper function. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\DeviceGuard\ Value Name: EnableVirtualizationBasedSecurity Value Type: REG_DWORD Value: 1 Value Name: RequirePlatformSecurityFeatures Value Type: REG_DWORD Value: 1 (Secure Boot only) or 3 (Secure Boot and DMA Protection) A Microsoft article on Credential Guard system requirement can be found at the following link: https://technet.microsoft.com/en-us/itpro/windows/keep-secure/credential-guard-requirements NOTE: The severity level for the requirement will be upgraded to CAT II starting January 2020.

Fix: F-74851r3_fix

Virtualization based security, including Credential Guard, currently cannot be implemented in virtual desktop implementations (VDI) due to specific supporting requirements including a TPM, UEFI with Secure Boot, and the capability to run the Hyper-V feature within the virtual desktop. For VDIs where the virtual desktop instance is deleted or refreshed upon logoff, this is NA. Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Device Guard >> "Turn On Virtualization Based Security" to "Enabled" with "Secure Boot" or "Secure Boot and DMA Protection" selected for "Select Platform Security Level:". A Microsoft article on Credential Guard system requirement can be found at the following link. https://technet.microsoft.com/en-us/itpro/windows/keep-secure/credential-guard-requirements

b

Local administrator accounts must have their privileged token filtered to prevent elevated privileges from being used over the network on domain systems.

SC-3 - Medium - CCI-001084 - V-63597 - SV-78087r2_rule

RMF Control

SC-3

Severity

M

CCI

Version

WN10-CC-000037

Vuln IDs

V-63597

Rule IDs

SV-78087r2_rule

A compromised local administrator account can provide means for an attacker to move laterally between domain systems. With User Account Control enabled, filtering the privileged token for built-in administrator accounts will prevent the elevated privileges of these accounts from being used over the network.

Checks: C-72029r1_chk

If the system is not a member of a domain, this is NA. If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ Value Name: LocalAccountTokenFilterPolicy Value Type: REG_DWORD Value: 0x00000000 (0)

Fix: F-78099r3_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MS Security Guide >> "Apply UAC restrictions to local accounts on network logons" to "Enabled". This policy setting requires the installation of the SecGuide custom templates included with the STIG package. "SecGuide.admx" and "SecGuide.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

c

Credential Guard must be running on Windows 10 domain-joined systems.

CM-6 - High - CCI-000366 - V-63599 - SV-78089r9_rule

RMF Control

CM-6

Severity

H

CCI

Version

WN10-CC-000075

Vuln IDs

V-63599

Rule IDs

SV-78089r9_rule

Credential Guard uses virtualization based security to protect information that could be used in credential theft attacks if compromised. This authentication information, which was stored in the Local Security Authority (LSA) in previous versions of Windows, is isolated from the rest of operating system and can only be accessed by privileged system software.

Checks: C-94077r6_chk

Confirm Credential Guard is running on domain-joined systems. For those devices that support Credential Guard, this feature must be enabled. Organizations need to take the appropriate action to acquire and implement compatible hardware with Credential Guard enabled. Virtualization based security, including Credential Guard, currently cannot be implemented in virtual desktop implementations (VDI) due to specific supporting requirements including a TPM, UEFI with Secure Boot, and the capability to run the Hyper-V feature within the virtual desktop. For VDIs where the virtual desktop instance is deleted or refreshed upon logoff, this is NA. Run "PowerShell" with elevated privileges (run as administrator). Enter the following: "Get-CimInstance -ClassName Win32_DeviceGuard -Namespace root\Microsoft\Windows\DeviceGuard" If "SecurityServicesRunning" does not include a value of "1" (e.g., "{1, 2}"), this is a finding. Alternately: Run "System Information". Under "System Summary", verify the following: If "Device Guard Security Services Running" does not list "Credential Guard", this is finding. The policy settings referenced in the Fix section will configure the following registry value. However, due to hardware requirements, the registry value alone does not ensure proper function. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\DeviceGuard\ Value Name: LsaCfgFlags Value Type: REG_DWORD Value: 0x00000001 (1) (Enabled with UEFI lock)

Fix: F-88433r2_fix

Virtualization based security, including Credential Guard, currently cannot be implemented in virtual desktop implementations (VDI) due to specific supporting requirements including a TPM, UEFI with Secure Boot, and the capability to run the Hyper-V feature within the virtual desktop. For VDIs where the virtual desktop instance is deleted or refreshed upon logoff, this is NA. For VDIs with persistent desktops, this may be downgraded to a CAT II only where administrators have specific tokens for the VDI. Administrator accounts on virtual desktops must only be used on systems in the VDI; they may not have administrative privileges on any other systems such as servers and physical workstations. Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Device Guard >> "Turn On Virtualization Based Security" to "Enabled" with "Enabled with UEFI lock" selected for "Credential Guard Configuration:". v1507 LTSB does not include selection options; select "Enable Credential Guard". A Microsoft TechNet article on Credential Guard, including system requirement details, can be found at the following link: https://docs.microsoft.com/en-us/windows/access-protection/credential-guard/credential-guard

b

The built-in administrator account must be disabled.

IA-2 - Medium - CCI-000764 - V-63601 - SV-78091r1_rule

RMF Control

IA-2

Severity

M

CCI

CCI-000764

Version

WN10-SO-000005

Vuln IDs

V-63601

Rule IDs

SV-78091r1_rule

The built-in administrator account is a well-known account subject to attack. It also provides no accountability to individual administrators on a system. It must be disabled to prevent its use.

Checks: C-64351r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options. If the value for "Accounts: Administrator account status" is not set to "Disabled", this is a finding.

Fix: F-69531r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Accounts: Administrator account status" to "Disabled".

b

Early Launch Antimalware, Boot-Start Driver Initialization Policy must prevent boot drivers.

CM-6 - Medium - CCI-000366 - V-63607 - SV-78097r2_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000085

Vuln IDs

V-63607

Rule IDs

SV-78097r2_rule

By being launched first by the kernel, ELAM ( Early Launch Antimalware) is ensured to be launched before any third-party software, and is therefore able to detect malware in the boot process and prevent it from initializing.

Checks: C-64357r3_chk

The default behavior is for Early Launch Antimalware - Boot-Start Driver Initialization policy is to enforce "Good, unknown and bad but critical" (preventing "bad"). If the registry value name below does not exist, this a finding. If it exists and is configured with a value of "7", this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Policies\EarlyLaunch\ Value Name: DriverLoadPolicy Value Type: REG_DWORD Value: 1, 3, or 8 Possible values for this setting are: 8 - Good only 1 - Good and unknown 3 - Good, unknown and bad but critical 7 - All (which includes "Bad" and would be a finding)

Fix: F-69537r5_fix

Ensure that Early Launch Antimalware - Boot-Start Driver Initialization policy is set to enforce "Good, unknown and bad but critical" (preventing "bad"). If this needs to be corrected configure the policy value for Computer Configuration >> Administrative Templates >> System >> Early Launch Antimalware >> "Boot-Start Driver Initialization Policy" to "Enabled” with "Good, unknown and bad but critical" selected.

b

Group Policy objects must be reprocessed even if they have not changed.

CM-6 - Medium - CCI-000366 - V-63609 - SV-78099r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000090

Vuln IDs

V-63609

Rule IDs

SV-78099r1_rule

Enabling this setting and then selecting the "Process even if the Group Policy objects have not changed" option ensures that the policies will be reprocessed even if none have been changed. This way, any unauthorized changes are forced to match the domain-based group policy settings again.

Checks: C-64359r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\Group Policy\{35378EAC-683F-11D2-A89A-00C04FBBCFA2} Value Name: NoGPOListChanges Value Type: REG_DWORD Value: 0

Fix: F-69539r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Group Policy >> "Configure registry policy processing" to "Enabled" and select the option "Process even if the Group Policy objects have not changed".

b

The built-in guest account must be disabled.

IA-8 - Medium - CCI-000804 - V-63611 - SV-78101r1_rule

RMF Control

IA-8

Severity

M

CCI

CCI-000804

Version

WN10-SO-000010

Vuln IDs

V-63611

Rule IDs

SV-78101r1_rule

A system faces an increased vulnerability threat if the built-in guest account is not disabled. This account is a known account that exists on all Windows systems and cannot be deleted. This account is initialized during the installation of the operating system with no password assigned.

Checks: C-64361r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options. If the value for "Accounts: Guest account status" is not set to "Disabled", this is a finding.

Fix: F-69541r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Accounts: Guest account status" to "Disabled".

b

Downloading print driver packages over HTTP must be prevented.

CM-7 - Medium - CCI-000381 - V-63615 - SV-78105r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-CC-000100

Vuln IDs

V-63615

Rule IDs

SV-78105r1_rule

Some features may communicate with the vendor, sending system information or downloading data or components for the feature. Turning off this capability will prevent potentially sensitive information from being sent outside the enterprise and uncontrolled updates to the system. This setting prevents the computer from downloading print driver packages over HTTP.

Checks: C-64365r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows NT\Printers\ Value Name: DisableWebPnPDownload Value Type: REG_DWORD Value: 1

Fix: F-69545r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Internet Communication Management >> Internet Communication settings >> "Turn off downloading of print drivers over HTTP" to "Enabled".

b

Local accounts with blank passwords must be restricted to prevent access from the network.

CM-6 - Medium - CCI-000366 - V-63617 - SV-78107r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-SO-000015

Vuln IDs

V-63617

Rule IDs

SV-78107r1_rule

An account without a password can allow unauthorized access to a system as only the username would be required. Password policies should prevent accounts with blank passwords from existing on a system. However, if a local account with a blank password did exist, enabling this setting will prevent network access, limiting the account to local console logon only.

Checks: C-64367r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Control\Lsa\ Value Name: LimitBlankPasswordUse Value Type: REG_DWORD Value: 1

Fix: F-69547r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Accounts: Limit local account use of blank passwords to console logon only" to "Enabled".

b

The built-in administrator account must be renamed.

CM-6 - Medium - CCI-000366 - V-63619 - SV-78109r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-SO-000020

Vuln IDs

V-63619

Rule IDs

SV-78109r1_rule

The built-in administrator account is a well-known account subject to attack. Renaming this account to an unidentified name improves the protection of this account and the system.

Checks: C-64371r2_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options. If the value for "Accounts: Rename administrator account" is set to "Administrator", this is a finding.

Fix: F-69551r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Accounts: Rename administrator account" to a name other than "Administrator".

b

Web publishing and online ordering wizards must be prevented from downloading a list of providers.

CM-7 - Medium - CCI-000381 - V-63621 - SV-78111r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-CC-000105

Vuln IDs

V-63621

Rule IDs

SV-78111r1_rule

Some features may communicate with the vendor, sending system information or downloading data or components for the feature. Turning off this capability will prevent potentially sensitive information from being sent outside the enterprise and uncontrolled updates to the system. This setting prevents Windows from downloading a list of providers for the Web publishing and online ordering wizards.

Checks: C-64369r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\ Value Name: NoWebServices Value Type: REG_DWORD Value: 1

Fix: F-69549r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Internet Communication Management >> Internet Communication settings >> "Turn off Internet download for Web publishing and online ordering wizards" to "Enabled".

b

Printing over HTTP must be prevented.

CM-7 - Medium - CCI-000381 - V-63623 - SV-78113r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-CC-000110

Vuln IDs

V-63623

Rule IDs

SV-78113r1_rule

Some features may communicate with the vendor, sending system information or downloading data or components for the feature. Turning off this capability will prevent potentially sensitive information from being sent outside the enterprise and uncontrolled updates to the system. This setting prevents the client computer from printing over HTTP, which allows the computer to print to printers on the intranet as well as the Internet.

Checks: C-64373r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows NT\Printers\ Value Name: DisableHTTPPrinting Value Type: REG_DWORD Value: 1

Fix: F-69553r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Internet Communication Management >> Internet Communication settings >> "Turn off printing over HTTP" to "Enabled".

b

The built-in guest account must be renamed.

CM-6 - Medium - CCI-000366 - V-63625 - SV-78115r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-SO-000025

Vuln IDs

V-63625

Rule IDs

SV-78115r1_rule

The built-in guest account is a well-known user account on all Windows systems and, as initially installed, does not require a password. This can allow access to system resources by unauthorized users. Renaming this account to an unidentified name improves the protection of this account and the system.

Checks: C-64375r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options. If the value for "Accounts: Rename guest account" is set to "Guest", this is a finding.

Fix: F-69555r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Accounts: Rename guest account" to a name other than "Guest".

b

Systems must at least attempt device authentication using certificates.

CM-6 - Medium - CCI-000366 - V-63627 - SV-78117r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000115

Vuln IDs

V-63627

Rule IDs

SV-78117r1_rule

Using certificates to authenticate devices to the domain provides increased security over passwords. By default systems will attempt to authenticate using certificates and fall back to passwords if the domain controller does not support certificates for devices. This may also be configured to always use certificates for device authentication.

Checks: C-64377r1_chk

This requirement is applicable to domain-joined systems, for standalone systems this is NA. The default behavior for "Support device authentication using certificate" is "Automatic". If the registry value name below does not exist, this is not a finding. If it exists and is configured with a value of "1", this is not a finding. If it exists and is configured with a value of "0", this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters\ Value Name: DevicePKInitEnabled Value Type: REG_DWORD Value: 1 (or if the Value Name does not exist)

Fix: F-69557r1_fix

This requirement is applicable to domain-joined systems, for standalone systems this is NA. The default behavior for "Support device authentication using certificate" is "Automatic". If this needs to be corrected, configured the policy value for Computer Configuration >> Administrative Templates >> System >> Kerberos >> "Support device authentication using certificate" to "Not Configured or "Enabled" with either option selected in "Device authentication behavior using certificate:".

b

The network selection user interface (UI) must not be displayed on the logon screen.

CM-7 - Medium - CCI-000381 - V-63629 - SV-78119r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-CC-000120

Vuln IDs

V-63629

Rule IDs

SV-78119r1_rule

Enabling interaction with the network selection UI allows users to change connections to available networks without signing into Windows.

Checks: C-64379r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\System\ Value Name: DontDisplayNetworkSelectionUI Value Type: REG_DWORD Value: 1

Fix: F-69559r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Logon >> "Do not display network selection UI" to "Enabled".

b

Local users on domain-joined computers must not be enumerated.

CM-7 - Medium - CCI-000381 - V-63633 - SV-78123r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-CC-000130

Vuln IDs

V-63633

Rule IDs

SV-78123r1_rule

The username is one part of logon credentials that could be used to gain access to a system. Preventing the enumeration of users limits this information to authorized personnel.

Checks: C-64385r1_chk

This requirement is applicable to domain-joined systems, for standalone systems this is NA. If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\System\ Value Name: EnumerateLocalUsers Value Type: REG_DWORD Value: 0

Fix: F-69565r1_fix

This requirement is applicable to domain-joined systems, for standalone systems this is NA. Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Logon >> "Enumerate local users on domain-joined computers" to "Disabled".

b

Audit policy using subcategories must be enabled.

AU-12 - Medium - CCI-000169 - V-63635 - SV-78125r1_rule

RMF Control

AU-12

Severity

M

CCI

CCI-000169

Version

WN10-SO-000030

Vuln IDs

V-63635

Rule IDs

SV-78125r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. This setting allows administrators to enable more precise auditing capabilities.

Checks: C-64383r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Control\Lsa\ Value Name: SCENoApplyLegacyAuditPolicy Value Type: REG_DWORD Value: 1

Fix: F-69563r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" to "Enabled".

b

Outgoing secure channel traffic must be encrypted or signed.

SC-8 - Medium - CCI-002418 - V-63639 - SV-78129r1_rule

RMF Control

SC-8

Severity

M

CCI

Version

WN10-SO-000035

Vuln IDs

V-63639

Rule IDs

SV-78129r1_rule

Requests sent on the secure channel are authenticated, and sensitive information (such as passwords) is encrypted, but not all information is encrypted. If this policy is enabled, outgoing secure channel traffic will be encrypted and signed.

Checks: C-64389r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Services\Netlogon\Parameters\ Value Name: RequireSignOrSeal Value Type: REG_DWORD Value: 1

Fix: F-69567r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Domain member: Digitally encrypt or sign secure channel data (always)" to "Enabled".

b

Outgoing secure channel traffic must be encrypted when possible.

SC-8 - Medium - CCI-002418 - V-63643 - SV-78133r1_rule

RMF Control

SC-8

Severity

M

CCI

Version

WN10-SO-000040

Vuln IDs

V-63643

Rule IDs

SV-78133r1_rule

Requests sent on the secure channel are authenticated, and sensitive information (such as passwords) is encrypted, but not all information is encrypted. If this policy is enabled, outgoing secure channel traffic will be encrypted.

Checks: C-64393r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Services\Netlogon\Parameters\ Value Name: SealSecureChannel Value Type: REG_DWORD Value: 1

Fix: F-69573r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Domain member: Digitally encrypt secure channel data (when possible)" to "Enabled".

b

Users must be prompted for a password on resume from sleep (on battery).

IA-11 - Medium - CCI-002038 - V-63645 - SV-78135r1_rule

RMF Control

IA-11

Severity

M

CCI

Version

WN10-CC-000145

Vuln IDs

V-63645

Rule IDs

SV-78135r1_rule

Authentication must always be required when accessing a system. This setting ensures the user is prompted for a password on resume from sleep (on battery).

Checks: C-64395r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Power\PowerSettings\0e796bdb-100d-47d6-a2d5-f7d2daa51f51\ Value Name: DCSettingIndex Value Type: REG_DWORD Value: 1

Fix: F-69575r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Power Management >> Sleep Settings >> "Require a password when a computer wakes (on battery)" to "Enabled".

b

Outgoing secure channel traffic must be signed when possible.

SC-8 - Medium - CCI-002418 - V-63647 - SV-78137r1_rule

RMF Control

SC-8

Severity

M

CCI

Version

WN10-SO-000045

Vuln IDs

V-63647

Rule IDs

SV-78137r1_rule

Requests sent on the secure channel are authenticated, and sensitive information (such as passwords) is encrypted, but the channel is not integrity checked. If this policy is enabled, outgoing secure channel traffic will be signed.

Checks: C-64397r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Services\Netlogon\Parameters\ Value Name: SignSecureChannel Value Type: REG_DWORD Value: 1

Fix: F-69577r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Domain member: Digitally sign secure channel data (when possible)" to "Enabled".

b

The user must be prompted for a password on resume from sleep (plugged in).

IA-11 - Medium - CCI-002038 - V-63649 - SV-78139r1_rule

RMF Control

IA-11

Severity

M

CCI

Version

WN10-CC-000150

Vuln IDs

V-63649

Rule IDs

SV-78139r1_rule

Authentication must always be required when accessing a system. This setting ensures the user is prompted for a password on resume from sleep (plugged in).

Checks: C-64399r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Power\PowerSettings\0e796bdb-100d-47d6-a2d5-f7d2daa51f51\ Value Name: ACSettingIndex Value Type: REG_DWORD Value: 1

Fix: F-69579r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Power Management >> Sleep Settings >> "Require a password when a computer wakes (plugged in)" to "Enabled".

c

Solicited Remote Assistance must not be allowed.

SC-4 - High - CCI-001090 - V-63651 - SV-78141r1_rule

RMF Control

SC-4

Severity

H

CCI

Version

WN10-CC-000155

Vuln IDs

V-63651

Rule IDs

SV-78141r1_rule

Remote assistance allows another user to view or take control of the local session of a user. Solicited assistance is help that is specifically requested by the local user. This may allow unauthorized parties access to the resources on the computer.

Checks: C-64401r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services\ Value Name: fAllowToGetHelp Value Type: REG_DWORD Value: 0

Fix: F-69581r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Remote Assistance >> "Configure Solicited Remote Assistance" to "Disabled".

a

The computer account password must not be prevented from being reset.

CM-6 - Low - CCI-000366 - V-63653 - SV-78143r1_rule

RMF Control

CM-6

Severity

L

CCI

Version

WN10-SO-000050

Vuln IDs

V-63653

Rule IDs

SV-78143r1_rule

Computer account passwords are changed automatically on a regular basis. Disabling automatic password changes can make the system more vulnerable to malicious access. Frequent password changes can be a significant safeguard for your system. A new password for the computer account will be generated every 30 days.

Checks: C-64707r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Services\Netlogon\Parameters\ Value Name: DisablePasswordChange Value Type: REG_DWORD Value: 0

Fix: F-69885r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Domain member: Disable machine account password changes" to "Disabled".

b

Unauthenticated RPC clients must be restricted from connecting to the RPC server.

IA-3 - Medium - CCI-001967 - V-63657 - SV-78147r1_rule

RMF Control

IA-3

Severity

M

CCI

CCI-001967

Version

WN10-CC-000165

Vuln IDs

V-63657

Rule IDs

SV-78147r1_rule

Configuring RPC to restrict unauthenticated RPC clients from connecting to the RPC server will prevent anonymous connections.

Checks: C-64405r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows NT\Rpc\ Value Name: RestrictRemoteClients Value Type: REG_DWORD Value: 1

Fix: F-69585r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Remote Procedure Call >> "Restrict Unauthenticated RPC clients" to "Enabled" and "Authenticated".

a

The setting to allow Microsoft accounts to be optional for modern style apps must be enabled.

CM-6 - Low - CCI-000366 - V-63659 - SV-78149r2_rule

RMF Control

CM-6

Severity

L

CCI

Version

WN10-CC-000170

Vuln IDs

V-63659

Rule IDs

SV-78149r2_rule

Control of credentials and the system must be maintained within the enterprise. Enabling this setting allows enterprise credentials to be used with modern style apps that support this, instead of Microsoft accounts.

Checks: C-81359r2_chk

Windows 10 LTSC\B versions do not support the Microsoft Store and modern apps; this is NA for those systems. If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ Value Name: MSAOptional Value Type: REG_DWORD Value: 0x00000001 (1)

Fix: F-69587r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> App Runtime >> "Allow Microsoft accounts to be optional" to "Enabled".

a

The maximum age for machine account passwords must be configured to 30 days or less.

CM-6 - Low - CCI-000366 - V-63661 - SV-78151r1_rule

RMF Control

CM-6

Severity

L

CCI

Version

WN10-SO-000055

Vuln IDs

V-63661

Rule IDs

SV-78151r1_rule

Computer account passwords are changed automatically on a regular basis. This setting controls the maximum password age that a machine account may have. This setting must be set to no more than 30 days, ensuring the machine changes its password monthly.

Checks: C-64409r1_chk

This is the default configuration for this setting (30 days). If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Services\Netlogon\Parameters\ Value Name: MaximumPasswordAge Value Type: REG_DWORD Value: 0x0000001e (30) (or less, excluding 0)

Fix: F-69589r1_fix

This is the default configuration for this setting (30 days). Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Domain member: Maximum machine account password age" to "30" or less (excluding 0 which is unacceptable).

a

The Application Compatibility Program Inventory must be prevented from collecting data and sending the information to Microsoft.

CM-7 - Low - CCI-000381 - V-63663 - SV-78153r1_rule

RMF Control

CM-7

Severity

L

CCI

Version

WN10-CC-000175

Vuln IDs

V-63663

Rule IDs

SV-78153r1_rule

Some features may communicate with the vendor, sending system information or downloading data or components for the feature. Turning off this capability will prevent potentially sensitive information from being sent outside the enterprise and uncontrolled updates to the system. This setting will prevent the Program Inventory from collecting data about a system and sending the information to Microsoft.

Checks: C-64411r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\AppCompat\ Value Name: DisableInventory Value Type: REG_DWORD Value: 1

Fix: F-69591r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Application Compatibility >> "Turn off Inventory Collector" to "Enabled".

b

The system must be configured to require a strong session key.

SC-8 - Medium - CCI-002418 - V-63665 - SV-78155r1_rule

RMF Control

SC-8

Severity

M

CCI

Version

WN10-SO-000060

Vuln IDs

V-63665

Rule IDs

SV-78155r1_rule

A computer connecting to a domain controller will establish a secure channel. Requiring strong session keys enforces 128-bit encryption between systems.

Checks: C-64413r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Services\Netlogon\Parameters\ Value Name: RequireStrongKey Value Type: REG_DWORD Value: 1 Warning: This setting may prevent a system from being joined to a domain if not configured consistently between systems.

Fix: F-69593r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Domain member: Require strong (Windows 2000 or Later) session key" to "Enabled".

c

Autoplay must be turned off for non-volume devices.

CM-7 - High - CCI-001764 - V-63667 - SV-78157r1_rule

RMF Control

CM-7

Severity

H

CCI

CCI-001764

Version

WN10-CC-000180

Vuln IDs

V-63667

Rule IDs

SV-78157r1_rule

Allowing autoplay to execute may introduce malicious code to a system. Autoplay begins reading from a drive as soon as you insert media in the drive. As a result, the setup file of programs or music on audio media may start. This setting will disable autoplay for non-volume devices (such as Media Transfer Protocol (MTP) devices).

Checks: C-64415r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\Explorer\ Value Name: NoAutoplayfornonVolume Value Type: REG_DWORD Value: 1

Fix: F-69595r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> AutoPlay Policies >> "Disallow Autoplay for non-volume devices" to "Enabled".

b

The machine inactivity limit must be set to 15 minutes, locking the system with the screensaver.

AC-11 - Medium - CCI-000057 - V-63669 - SV-78159r2_rule

RMF Control

AC-11

Severity

M

CCI

CCI-000057

Version

WN10-SO-000070

Vuln IDs

V-63669

Rule IDs

SV-78159r2_rule

Unattended systems are susceptible to unauthorized use and should be locked when unattended. The screen saver should be set at a maximum of 15 minutes and be password protected. This protects critical and sensitive data from exposure to unauthorized personnel with physical access to the computer.

Checks: C-81353r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ Value Name: InactivityTimeoutSecs Value Type: REG_DWORD Value: 0x00000384 (900) (or less, excluding "0" which is effectively disabled)

Fix: F-88429r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Interactive logon: Machine inactivity limit" to "900" seconds" or less, excluding "0" which is effectively disabled.

c

The default autorun behavior must be configured to prevent autorun commands.

CM-7 - High - CCI-001764 - V-63671 - SV-78161r1_rule

RMF Control

CM-7

Severity

H

CCI

CCI-001764

Version

WN10-CC-000185

Vuln IDs

V-63671

Rule IDs

SV-78161r1_rule

Allowing autorun commands to execute may introduce malicious code to a system. Configuring this setting prevents autorun commands from executing.

Checks: C-64419r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\ Value Name: NoAutorun Value Type: REG_DWORD Value: 1

Fix: F-69599r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> AutoPlay Policies >> "Set the default behavior for AutoRun" to "Enabled:Do not execute any autorun commands".

c

Autoplay must be disabled for all drives.

CM-7 - High - CCI-001764 - V-63673 - SV-78163r1_rule

RMF Control

CM-7

Severity

H

CCI

CCI-001764

Version

WN10-CC-000190

Vuln IDs

V-63673

Rule IDs

SV-78163r1_rule

Allowing autoplay to execute may introduce malicious code to a system. Autoplay begins reading from a drive as soon as you insert media in the drive. As a result, the setup file of programs or music on audio media may start. By default, autoplay is disabled on removable drives, such as the floppy disk drive (but not the CD-ROM drive) and on network drives. If you enable this policy, you can also disable autoplay on all drives.

Checks: C-64423r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\ Value Name: NoDriveTypeAutoRun Value Type: REG_DWORD Value: 0x000000ff (255) Note: If the value for NoDriveTypeAutorun is entered manually, it must be entered as "ff" when Hexadecimal is selected, or "255" with Decimal selected. Using the policy value specified in the Fix section will enter it correctly.

Fix: F-69603r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> AutoPlay Policies >> "Turn off AutoPlay" to "Enabled:All Drives".

b

The required legal notice must be configured to display before console logon.

AC-8 - Medium - CCI-000048 - V-63675 - SV-78165r2_rule

RMF Control

AC-8

Severity

M

CCI

CCI-000048

Version

WN10-SO-000075

Vuln IDs

V-63675

Rule IDs

SV-78165r2_rule

Failure to display the logon banner prior to a logon attempt will negate legal proceedings resulting from unauthorized access to system resources.

Checks: C-64421r2_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ Value Name: LegalNoticeText Value Type: REG_SZ Value: You are accessing a U.S. Government (USG) Information System (IS) that is provided for USG-authorized use only. By using this IS (which includes any device attached to this IS), you consent to the following conditions: -The USG routinely intercepts and monitors communications on this IS for purposes including, but not limited to, penetration testing, COMSEC monitoring, network operations and defense, personnel misconduct (PM), law enforcement (LE), and counterintelligence (CI) investigations. -At any time, the USG may inspect and seize data stored on this IS. -Communications using, or data stored on, this IS are not private, are subject to routine monitoring, interception, and search, and may be disclosed or used for any USG-authorized purpose. -This IS includes security measures (e.g., authentication and access controls) to protect USG interests--not for your personal benefit or privacy. -Notwithstanding the above, using this IS does not constitute consent to PM, LE or CI investigative searching or monitoring of the content of privileged communications, or work product, related to personal representation or services by attorneys, psychotherapists, or clergy, and their assistants. Such communications and work product are private and confidential. See User Agreement for details.

Fix: F-69601r2_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Interactive logon: Message text for users attempting to log on" to the following. You are accessing a U.S. Government (USG) Information System (IS) that is provided for USG-authorized use only. By using this IS (which includes any device attached to this IS), you consent to the following conditions: -The USG routinely intercepts and monitors communications on this IS for purposes including, but not limited to, penetration testing, COMSEC monitoring, network operations and defense, personnel misconduct (PM), law enforcement (LE), and counterintelligence (CI) investigations. -At any time, the USG may inspect and seize data stored on this IS. -Communications using, or data stored on, this IS are not private, are subject to routine monitoring, interception, and search, and may be disclosed or used for any USG-authorized purpose. -This IS includes security measures (e.g., authentication and access controls) to protect USG interests--not for your personal benefit or privacy. -Notwithstanding the above, using this IS does not constitute consent to PM, LE or CI investigative searching or monitoring of the content of privileged communications, or work product, related to personal representation or services by attorneys, psychotherapists, or clergy, and their assistants. Such communications and work product are private and confidential. See User Agreement for details.

b

Enhanced anti-spoofing for facial recognition must be enabled on Window 10.

CM-6 - Medium - CCI-000366 - V-63677 - SV-78167r3_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000195

Vuln IDs

V-63677

Rule IDs

SV-78167r3_rule

Enhanced anti-spoofing provides additional protections when using facial recognition with devices that support it.

Checks: C-81361r2_chk

Windows 10 v1507 LTSB version does not include this setting; it is NA for those systems. If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Biometrics\FacialFeatures\ Value Name: EnhancedAntiSpoofing Value Type: REG_DWORD Value: 0x00000001 (1)

Fix: F-88435r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Biometrics >> Facial Features >> "Configure enhanced anti-spoofing" to "Enabled". v1607: The policy name is "Use enhanced anti-spoofing when available".

b

Administrator accounts must not be enumerated during elevation.

SC-3 - Medium - CCI-001084 - V-63679 - SV-78169r1_rule

RMF Control

SC-3

Severity

M

CCI

Version

WN10-CC-000200

Vuln IDs

V-63679

Rule IDs

SV-78169r1_rule

Enumeration of administrator accounts when elevating can provide part of the logon information to an unauthorized user. This setting configures the system to always require users to type in a username and password to elevate a running application.

Checks: C-64429r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CredUI\ Value Name: EnumerateAdministrators Value Type: REG_DWORD Value: 0

Fix: F-69607r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Credential User Interface >> "Enumerate administrator accounts on elevation" to "Disabled".

a

The Windows dialog box title for the legal banner must be configured.

AC-8 - Low - CCI-000048 - V-63681 - SV-78171r1_rule

RMF Control

AC-8

Severity

L

CCI

CCI-000048

Version

WN10-SO-000080

Vuln IDs

V-63681

Rule IDs

SV-78171r1_rule

Failure to display the logon banner prior to a logon attempt will negate legal proceedings resulting from unauthorized access to system resources.

Checks: C-64427r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ Value Name: LegalNoticeCaption Value Type: REG_SZ Value: See message title above "DoD Notice and Consent Banner", "US Department of Defense Warning Statement" or a site-defined equivalent, this is a finding. If a site-defined title is used, it can in no case contravene or modify the language of the banner text required in WN10-SO-000075.

Fix: F-69609r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Interactive logon: Message title for users attempting to log on" to "DoD Notice and Consent Banner", "US Department of Defense Warning Statement", or a site-defined equivalent. If a site-defined title is used, it can in no case contravene or modify the language of the banner text required in WN10-SO-000075.

b

Windows Telemetry must not be configured to Full.

CM-6 - Medium - CCI-000366 - V-63683 - SV-78173r3_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000205

Vuln IDs

V-63683

Rule IDs

SV-78173r3_rule

Some features may communicate with the vendor, sending system information or downloading data or components for the feature. Limiting this capability will prevent potentially sensitive information from being sent outside the enterprise. The "Security" option for Telemetry configures the lowest amount of data, effectively none outside of the Malicious Software Removal Tool (MSRT), Defender and telemetry client settings. "Basic" sends basic diagnostic and usage data and may be required to support some Microsoft services. "Enhanced" includes additional information on how Windows and apps are used and advanced reliability data. Windows Analytics can use a "limited enhanced" level to provide information such as health data for devices. This requires the configuration of an additional setting available with v1709 and later of Windows 10.

Checks: C-81949r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\DataCollection\ Value Name: AllowTelemetry Type: REG_DWORD Value: 0x00000000 (0) (Security) 0x00000001 (1) (Basic) If an organization is using v1709 or later of Windows 10 this may be configured to "Enhanced" to support Windows Analytics. V-82145 must also be configured to limit the Enhanced diagnostic data to the minimum required by Windows Analytics. This registry value will then be 0x00000002 (2).

Fix: F-89003r2_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Data Collection and Preview Builds >> "Allow Telemetry" to "Enabled" with "0 - Security [Enterprise Only]" or "1 - Basic" selected in "Options:". If an organization is using v1709 or later of Windows 10 this may be configured to "2 - Enhanced" to support Windows Analytics. V-82145 must also be configured to limit the Enhanced diagnostic data to the minimum required by Windows Analytics.

b

The Windows Defender SmartScreen for Explorer must be enabled.

CM-7 - Medium - CCI-000381 - V-63685 - SV-78175r6_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-CC-000210

Vuln IDs

V-63685

Rule IDs

SV-78175r6_rule

Windows Defender SmartScreen helps protect systems from programs downloaded from the internet that may be malicious. Enabling Windows Defender SmartScreen will warn or prevent users from running potentially malicious programs.

Checks: C-91419r1_chk

This is applicable to unclassified systems, for other systems this is NA. If the following registry values do not exist or are not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\System\ Value Name: EnableSmartScreen Value Type: REG_DWORD Value: 0x00000001 (1) And Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\System\ Value Name: ShellSmartScreenLevel Value Type: REG_SZ Value: Block v1607 LTSB: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\System\ Value Name: EnableSmartScreen Value Type: REG_DWORD Value: 0x00000001 (1) v1507 LTSB: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\System\ Value Name: EnableSmartScreen Value Type: REG_DWORD Value: 0x00000002 (2)

Fix: F-98461r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> File Explorer >> "Configure Windows Defender SmartScreen" to "Enabled" with "Warn and prevent bypass" selected. Windows 10 includes duplicate policies for this setting. It can also be configured under Computer Configuration >> Administrative Templates >> Windows Components >> Windows Defender SmartScreen >> Explorer. v1607 LTSB: Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> File Explorer >> "Configure Windows SmartScreen" to "Enabled". (Selection options are not available.) v1507 LTSB: Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> File Explorer >> "Configure Windows SmartScreen" to "Enabled" with "Require approval from an administrator before running downloaded unknown software" selected.

a

Caching of logon credentials must be limited.

CM-6 - Low - CCI-000366 - V-63687 - SV-78177r1_rule

RMF Control

CM-6

Severity

L

CCI

Version

WN10-SO-000085

Vuln IDs

V-63687

Rule IDs

SV-78177r1_rule

The default Windows configuration caches the last logon credentials for users who log on interactively to a system. This feature is provided for system availability reasons, such as the user's machine being disconnected from the network or domain controllers being unavailable. Even though the credential cache is well-protected, if a system is attacked, an unauthorized individual may isolate the password to a domain user account using a password-cracking program and gain access to the domain.

Checks: C-64433r1_chk

This is the default configuration for this setting (10 logons to cache). If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\ Value Name: CachedLogonsCount Value Type: REG_SZ Value: 10 (or less) This setting only applies to domain-joined systems, however, it is configured by default on all systems.

Fix: F-69615r1_fix

This is the default configuration for this setting (10 logons to cache). Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Interactive logon: Number of previous logons to cache (in case domain controller is not available)" to "10" logons or less. This setting only applies to domain-joined systems, however, it is configured by default on all systems.

b

Explorer Data Execution Prevention must be enabled.

SI-16 - Medium - CCI-002824 - V-63689 - SV-78179r1_rule

RMF Control

SI-16

Severity

M

CCI

Version

WN10-CC-000215

Vuln IDs

V-63689

Rule IDs

SV-78179r1_rule

Data Execution Prevention (DEP) provides additional protection by performing checks on memory to help prevent malicious code from running. This setting will prevent Data Execution Prevention from being turned off for File Explorer.

Checks: C-64437r1_chk

The default behavior is for data execution prevention to be turned on for file explorer. If the registry value name below does not exist, this is not a finding. If it exists and is configured with a value of "0", this is not a finding. If it exists and is configured with a value of "1", this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\Explorer\ Value Name: NoDataExecutionPrevention Value Type: REG_DWORD Value: 0 (or if the Value Name does not exist)

Fix: F-69617r1_fix

The default behavior is for data execution prevention to be turned on for file explorer. If this needs to be corrected, configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> File Explorer >> "Turn off Data Execution Prevention for Explorer" to "Not Configured" or "Disabled".

a

Turning off File Explorer heap termination on corruption must be disabled.

SC-5 - Low - CCI-002385 - V-63691 - SV-78181r3_rule

RMF Control

SC-5

Severity

L

CCI

CCI-002385

Version

WN10-CC-000220

Vuln IDs

V-63691

Rule IDs

SV-78181r3_rule

Legacy plug-in applications may continue to function when a File Explorer session has become corrupt. Disabling this feature will prevent this.

Checks: C-72013r3_chk

The default behavior is for File Explorer heap termination on corruption to be enabled. If the registry Value Name below does not exist, this is not a finding. If it exists and is configured with a value of "0", this is not a finding. If it exists and is configured with a value of "1", this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\Explorer\ Value Name: NoHeapTerminationOnCorruption Value Type: REG_DWORD Value: 0x00000000 (0) (or if the Value Name does not exist)

Fix: F-78109r3_fix

The default behavior is for File Explorer heap termination on corruption to be enabled. If this needs to be corrected, configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> File Explorer >> "Turn off heap termination on corruption" to "Not Configured" or "Disabled".

b

File Explorer shell protocol must run in protected mode.

CM-6 - Medium - CCI-000366 - V-63695 - SV-78185r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000225

Vuln IDs

V-63695

Rule IDs

SV-78185r1_rule

The shell protocol will limit the set of folders applications can open when run in protected mode. Restricting files an application can open, to a limited set of folders, increases the security of Windows.

Checks: C-64443r1_chk

The default behavior is for shell protected mode to be turned on for file explorer. If the registry value name below does not exist, this is not a finding. If it exists and is configured with a value of "0", this is not a finding. If it exists and is configured with a value of "1", this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\ Value Name: PreXPSP2ShellProtocolBehavior Value Type: REG_DWORD Value: 0 (or if the Value Name does not exist)

Fix: F-69623r1_fix

The default behavior is for shell protected mode to be turned on for file explorer. If this needs to be corrected, configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> File Explorer >> "Turn off shell protocol protected mode" to "Not Configured" or "Disabled".

b

The Smart Card removal option must be configured to Force Logoff or Lock Workstation.

CM-6 - Medium - CCI-000366 - V-63697 - SV-78187r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-SO-000095

Vuln IDs

V-63697

Rule IDs

SV-78187r1_rule

Unattended systems are susceptible to unauthorized use and must be locked. Configuring a system to lock when a smart card is removed will ensure the system is inaccessible when unattended.

Checks: C-64445r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\ Value Name: SCRemoveOption Value Type: REG_SZ Value: 1 (Lock Workstation) or 2 (Force Logoff) This can be left not configured or set to "No action" on workstations with the following conditions. This must be documented with the ISSO. -The setting cannot be configured due to mission needs, or because it interferes with applications. -Policy must be in place that users manually lock workstations when leaving them unattended. -The screen saver is properly configured to lock as required.

Fix: F-69625r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Interactive logon: Smart card removal behavior" to "Lock Workstation" or "Force Logoff".

b

Users must not be allowed to ignore Windows Defender SmartScreen filter warnings for malicious websites in Microsoft Edge.

CM-6 - Medium - CCI-000366 - V-63699 - SV-78189r6_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000230

Vuln IDs

V-63699

Rule IDs

SV-78189r6_rule

The Windows Defender SmartScreen filter in Microsoft Edge provides warning messages and blocks potentially malicious websites and file downloads. If users are allowed to ignore warnings from the Windows Defender SmartScreen filter they could still access malicious websites.

Checks: C-79101r1_chk

This is applicable to unclassified systems, for other systems this is NA. Windows 10 LTSC\B versions do not include Microsoft Edge, this is NA for those systems. If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\MicrosoftEdge\PhishingFilter\ Value Name: PreventOverride Type: REG_DWORD Value: 0x00000001 (1)

Fix: F-98463r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Edge >> "Prevent bypassing Windows Defender SmartScreen prompts for sites" to "Enabled". Windows 10 includes duplicate policies for this setting. It can also be configured under Computer Configuration >> Administrative Templates >> Windows Components >> Windows Defender SmartScreen >> Microsoft Edge.

b

Users must not be allowed to ignore Windows Defender SmartScreen filter warnings for unverified files in Microsoft Edge.

CM-6 - Medium - CCI-000366 - V-63701 - SV-78191r6_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000235

Vuln IDs

V-63701

Rule IDs

SV-78191r6_rule

The Windows Defender SmartScreen filter in Microsoft Edge provides warning messages and blocks potentially malicious websites and file downloads. If users are allowed to ignore warnings from the Windows Defender SmartScreen filter they could still download potentially malicious files.

Checks: C-79105r1_chk

This is applicable to unclassified systems, for other systems this is NA. Windows 10 LTSC\B versions do not include Microsoft Edge, this is NA for those systems. If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\MicrosoftEdge\PhishingFilter\ Value Name: PreventOverrideAppRepUnknown Type: REG_DWORD Value: 0x00000001 (1)

Fix: F-98465r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Edge >> "Prevent bypassing Windows Defender SmartScreen prompts for files" to "Enabled". Windows 10 includes duplicate policies for this setting. It can also be configured under Computer Configuration >> Administrative Templates >> Windows Components >> Windows Defender SmartScreen >> Microsoft Edge.

b

The Windows SMB client must be configured to always perform SMB packet signing.

SC-8 - Medium - CCI-002418 - V-63703 - SV-78193r1_rule

RMF Control

SC-8

Severity

M

CCI

Version

WN10-SO-000100

Vuln IDs

V-63703

Rule IDs

SV-78193r1_rule

The server message block (SMB) protocol provides the basis for many network operations. Digitally signed SMB packets aid in preventing man-in-the-middle attacks. If this policy is enabled, the SMB client will only communicate with an SMB server that performs SMB packet signing.

Checks: C-64451r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters\ Value Name: RequireSecuritySignature Value Type: REG_DWORD Value: 1

Fix: F-69629r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Microsoft network client: Digitally sign communications (always)" to "Enabled".

b

The password manager function in the Edge browser must be disabled.

CM-6 - Medium - CCI-000366 - V-63709 - SV-78199r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000245

Vuln IDs

V-63709

Rule IDs

SV-78199r4_rule

Passwords save locally for re-use when browsing may be subject to compromise. Disabling the Edge password manager will prevent this for the browser.

Checks: C-79113r1_chk

Windows 10 LTSC\B versions do not include Microsoft Edge, this is NA for those systems. If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\MicrosoftEdge\Main\ Value Name: FormSuggest Passwords Type: REG_SZ Value: no

Fix: F-83245r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Edge >> "Configure Password Manager" to "Disabled".

b

Unencrypted passwords must not be sent to third-party SMB Servers.

IA-5 - Medium - CCI-000197 - V-63711 - SV-78201r1_rule

RMF Control

IA-5

Severity

M

CCI

CCI-000197

Version

WN10-SO-000110

Vuln IDs

V-63711

Rule IDs

SV-78201r1_rule

Some non-Microsoft SMB servers only support unencrypted (plain text) password authentication. Sending plain text passwords across the network, when authenticating to an SMB server, reduces the overall security of the environment. Check with the vendor of the SMB server to see if there is a way to support encrypted password authentication.

Checks: C-64459r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters\ Value Name: EnablePlainTextPassword Value Type: REG_DWORD Value: 0

Fix: F-69639r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Microsoft network client: Send unencrypted password to third-party SMB servers" to "Disabled".

b

The Windows Defender SmartScreen filter for Microsoft Edge must be enabled.

CM-6 - Medium - CCI-000366 - V-63713 - SV-78203r6_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000250

Vuln IDs

V-63713

Rule IDs

SV-78203r6_rule

The Windows Defender SmartScreen filter in Microsoft Edge provides warning messages and blocks potentially malicious websites.

Checks: C-79115r1_chk

This is applicable to unclassified systems, for other systems this is NA. Windows 10 LTSC\B versions do not include Microsoft Edge, this is NA for those systems. If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\MicrosoftEdge\PhishingFilter\ Value Name: EnabledV9 Type: REG_DWORD Value: 0x00000001 (1)

Fix: F-98467r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Edge >> "Configure Windows Defender SmartScreen" to "Enabled". Windows 10 includes duplicate policies for this setting. It can also be configured under Computer Configuration >> Administrative Templates >> Windows Components >> Windows Defender SmartScreen >> Microsoft Edge.

b

The use of a hardware security device with Windows Hello for Business must be enabled.

CM-6 - Medium - CCI-000366 - V-63717 - SV-78207r5_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000255

Vuln IDs

V-63717

Rule IDs

SV-78207r5_rule

The use of a Trusted Platform Module (TPM) to store keys for Windows Hello for Business provides additional security. Keys stored in the TPM may only be used on that system while keys stored using software are more susceptible to compromise and could be used on other systems.

Checks: C-79119r1_chk

Virtual desktop implementations currently may not support the use of TPMs. For virtual desktop implementations where the virtual desktop instance is deleted or refreshed upon logoff, this is NA. If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\PassportForWork\ Value Name: RequireSecurityDevice Type: REG_DWORD Value: 1

Fix: F-83247r2_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Hello for Business >> "Use a hardware security device" to "Enabled". v1507 LTSB: The policy path is Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Passport for Work.

b

The Windows SMB server must be configured to always perform SMB packet signing.

SC-8 - Medium - CCI-002418 - V-63719 - SV-78209r1_rule

RMF Control

SC-8

Severity

M

CCI

Version

WN10-SO-000120

Vuln IDs

V-63719

Rule IDs

SV-78209r1_rule

The server message block (SMB) protocol provides the basis for many network operations. Digitally signed SMB packets aid in preventing man-in-the-middle attacks. If this policy is enabled, the SMB server will only communicate with an SMB client that performs SMB packet signing.

Checks: C-64467r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Services\LanManServer\Parameters\ Value Name: RequireSecuritySignature Value Type: REG_DWORD Value: 1

Fix: F-69647r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Microsoft network server: Digitally sign communications (always)" to "Enabled".

b

Windows 10 must be configured to require a minimum pin length of six characters or greater.

CM-6 - Medium - CCI-000366 - V-63721 - SV-78211r6_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000260

Vuln IDs

V-63721

Rule IDs

SV-78211r6_rule

Windows allows the use of PINs as well as biometrics for authentication without sending a password to a network or website where it could be compromised. Longer minimum PIN lengths increase the available combinations an attacker would have to attempt. Shorter minimum length significantly reduces the strength.

Checks: C-64469r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\PassportForWork\PINComplexity\ Value Name: MinimumPINLength Type: REG_DWORD Value: 6 (or greater)

Fix: F-98469r2_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> PIN Complexity >> "Minimum PIN length" to "6" or greater. v1607 LTSB: The policy path is Computer Configuration >> Administrative Templates >> Windows Components >> Windows Hello for Business >> Pin Complexity. v1507 LTSB: The policy path is Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Passport for Work >> Pin Complexity.

b

Passwords must not be saved in the Remote Desktop Client.

IA-11 - Medium - CCI-002038 - V-63729 - SV-78219r1_rule

RMF Control

IA-11

Severity

M

CCI

Version

WN10-CC-000270

Vuln IDs

V-63729

Rule IDs

SV-78219r1_rule

Saving passwords in the Remote Desktop Client could allow an unauthorized user to establish a remote desktop session to another system. The system must be configured to prevent users from saving passwords in the Remote Desktop Client.

Checks: C-64479r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services\ Value Name: DisablePasswordSaving Value Type: REG_DWORD Value: 1

Fix: F-69657r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Remote Desktop Services >> Remote Desktop Connection Client >> "Do not allow passwords to be saved" to "Enabled".

b

Local drives must be prevented from sharing with Remote Desktop Session Hosts.

SC-4 - Medium - CCI-001090 - V-63731 - SV-78221r1_rule

RMF Control

SC-4

Severity

M

CCI

Version

WN10-CC-000275

Vuln IDs

V-63731

Rule IDs

SV-78221r1_rule

Preventing users from sharing the local drives on their client computers to Remote Session Hosts that they access helps reduce possible exposure of sensitive data.

Checks: C-64481r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services\ Value Name: fDisableCdm Value Type: REG_DWORD Value: 1

Fix: F-69659r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Remote Desktop Services >> Remote Desktop Session Host >> Device and Resource Redirection >> "Do not allow drive redirection" to "Enabled".

b

Remote Desktop Services must always prompt a client for passwords upon connection.

IA-11 - Medium - CCI-002038 - V-63733 - SV-78223r1_rule

RMF Control

IA-11

Severity

M

CCI

Version

WN10-CC-000280

Vuln IDs

V-63733

Rule IDs

SV-78223r1_rule

This setting controls the ability of users to supply passwords automatically as part of their remote desktop connection. Disabling this setting would allow anyone to use the stored credentials in a connection item to connect to the terminal server.

Checks: C-64483r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services\ Value Name: fPromptForPassword Value Type: REG_DWORD Value: 1

Fix: F-69661r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Remote Desktop Services >> Remote Desktop Session Host >> Security >> "Always prompt for password upon connection" to "Enabled".

b

The Remote Desktop Session Host must require secure RPC communications.

AC-17 - Medium - CCI-001453 - V-63737 - SV-78227r1_rule

RMF Control

AC-17

Severity

M

CCI

CCI-001453

Version

WN10-CC-000285

Vuln IDs

V-63737

Rule IDs

SV-78227r1_rule

Allowing unsecure RPC communication exposes the system to man in the middle attacks and data disclosure attacks. A man in the middle attack occurs when an intruder captures packets between a client and server and modifies them before allowing the packets to be exchanged. Usually the attacker will modify the information in the packets in an attempt to cause either the client or server to reveal sensitive information.

Checks: C-64487r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services\ Value Name: fEncryptRPCTraffic Value Type: REG_DWORD Value: 1

Fix: F-69665r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Remote Desktop Services >> Remote Desktop Session Host >> Security "Require secure RPC communication" to "Enabled".

c

Anonymous SID/Name translation must not be allowed.

CM-6 - High - CCI-000366 - V-63739 - SV-78229r1_rule

RMF Control

CM-6

Severity

H

CCI

Version

WN10-SO-000140

Vuln IDs

V-63739

Rule IDs

SV-78229r1_rule

Allowing anonymous SID/Name translation can provide sensitive information for accessing a system. Only authorized users must be able to perform such translations.

Checks: C-64489r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options. If the value for "Network access: Allow anonymous SID/Name translation" is not set to "Disabled", this is a finding.

Fix: F-69667r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network access: Allow anonymous SID/Name translation" to "Disabled".

b

Remote Desktop Services must be configured with the client connection encryption set to the required level.

AC-17 - Medium - CCI-000068 - V-63741 - SV-78231r1_rule

RMF Control

AC-17

Severity

M

CCI

CCI-000068

Version

WN10-CC-000290

Vuln IDs

V-63741

Rule IDs

SV-78231r1_rule

Remote connections must be encrypted to prevent interception of data or sensitive information. Selecting "High Level" will ensure encryption of Remote Desktop Services sessions in both directions.

Checks: C-64491r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services\ Value Name: MinEncryptionLevel Value Type: REG_DWORD Value: 3

Fix: F-69669r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Remote Desktop Services >> Remote Desktop Session Host >> Security >> "Set client connection encryption level" to "Enabled" and "High Level".

b

Attachments must be prevented from being downloaded from RSS feeds.

CM-6 - Medium - CCI-000366 - V-63743 - SV-78233r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000295

Vuln IDs

V-63743

Rule IDs

SV-78233r1_rule

Attachments from RSS feeds may not be secure. This setting will prevent attachments from being downloaded from RSS feeds.

Checks: C-64495r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Internet Explorer\Feeds\ Value Name: DisableEnclosureDownload Value Type: REG_DWORD Value: 1

Fix: F-69671r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> RSS Feeds >> "Prevent downloading of enclosures" to "Enabled".

c

Anonymous enumeration of SAM accounts must not be allowed.

CM-6 - High - CCI-000366 - V-63745 - SV-78235r1_rule

RMF Control

CM-6

Severity

H

CCI

Version

WN10-SO-000145

Vuln IDs

V-63745

Rule IDs

SV-78235r1_rule

Anonymous enumeration of SAM accounts allows anonymous log on users (null session connections) to list all accounts names, thus providing a list of potential points to attack the system.

Checks: C-64493r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Control\Lsa\ Value Name: RestrictAnonymousSAM Value Type: REG_DWORD Value: 1

Fix: F-69673r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network access: Do not allow anonymous enumeration of SAM accounts" to "Enabled".

b

Basic authentication for RSS feeds over HTTP must not be used.

CM-7 - Medium - CCI-000381 - V-63747 - SV-78237r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-CC-000300

Vuln IDs

V-63747

Rule IDs

SV-78237r1_rule

Basic authentication uses plain text passwords that could be used to compromise a system.

Checks: C-64497r1_chk

The default behavior is for the Windows RSS platform to not use Basic authentication over HTTP connections. If the registry value name below does not exist, this is not a finding. If it exists and is configured with a value of "0", this is not a finding. If it exists and is configured with a value of "1", this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Internet Explorer\Feeds\ Value Name: AllowBasicAuthInClear Value Type: REG_DWORD Value: 0 (or if the Value Name does not exist)

Fix: F-69675r1_fix

The default behavior is for the Windows RSS platform to not use Basic authentication over HTTP connections. If this needs to be corrected, configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> RSS Feeds >> "Turn on Basic feed authentication over HTTP" to "Not Configured" or "Disabled".

c

Anonymous enumeration of shares must be restricted.

SC-4 - High - CCI-001090 - V-63749 - SV-78239r1_rule

RMF Control

SC-4

Severity

H

CCI

Version

WN10-SO-000150

Vuln IDs

V-63749

Rule IDs

SV-78239r1_rule

Allowing anonymous logon users (null session connections) to list all account names and enumerate all shared resources can provide a map of potential points to attack the system.

Checks: C-64499r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Control\Lsa\ Value Name: RestrictAnonymous Value Type: REG_DWORD Value: 1

Fix: F-69677r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network access: Do not allow anonymous enumeration of SAM accounts and shares" to "Enabled".

b

Indexing of encrypted files must be turned off.

CM-7 - Medium - CCI-000381 - V-63751 - SV-78241r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-CC-000305

Vuln IDs

V-63751

Rule IDs

SV-78241r1_rule

Indexing of encrypted files may expose sensitive data. This setting prevents encrypted files from being indexed.

Checks: C-64501r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\Windows Search\ Value Name: AllowIndexingEncryptedStoresOrItems Value Type: REG_DWORD Value: 0

Fix: F-69679r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Search >> "Allow indexing of encrypted files" to "Disabled".

b

The system must be configured to prevent anonymous users from having the same rights as the Everyone group.

CM-6 - Medium - CCI-000366 - V-63755 - SV-78245r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-SO-000160

Vuln IDs

V-63755

Rule IDs

SV-78245r1_rule

Access by anonymous users must be restricted. If this setting is enabled, then anonymous users have the same rights and permissions as the built-in Everyone group. Anonymous users must not have these permissions or rights.

Checks: C-64505r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Control\Lsa\ Value Name: EveryoneIncludesAnonymous Value Type: REG_DWORD Value: 0

Fix: F-69683r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network access: Let Everyone permissions apply to anonymous users" to "Disabled".

c

Anonymous access to Named Pipes and Shares must be restricted.

SC-4 - High - CCI-001090 - V-63759 - SV-78249r1_rule

RMF Control

SC-4

Severity

H

CCI

Version

WN10-SO-000165

Vuln IDs

V-63759

Rule IDs

SV-78249r1_rule

Allowing anonymous access to named pipes or shares provides the potential for unauthorized system access. This setting restricts access to those defined in "Network access: Named Pipes that can be accessed anonymously" and "Network access: Shares that can be accessed anonymously", both of which must be blank under other requirements.

Checks: C-64509r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Services\LanManServer\Parameters\ Value Name: RestrictNullSessAccess Value Type: REG_DWORD Value: 1

Fix: F-69687r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network access: Restrict anonymous access to Named Pipes and Shares" to "Enabled".

b

NTLM must be prevented from falling back to a Null session.

CM-6 - Medium - CCI-000366 - V-63765 - SV-78255r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-SO-000180

Vuln IDs

V-63765

Rule IDs

SV-78255r1_rule

NTLM sessions that are allowed to fall back to Null (unauthenticated) sessions may gain unauthorized access.

Checks: C-64517r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Control\LSA\MSV1_0\ Value Name: allownullsessionfallback Value Type: REG_DWORD Value: 0

Fix: F-69693r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network security: Allow LocalSystem NULL session fallback" to "Disabled".

b

PKU2U authentication using online identities must be prevented.

CM-6 - Medium - CCI-000366 - V-63767 - SV-78257r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-SO-000185

Vuln IDs

V-63767

Rule IDs

SV-78257r1_rule

PKU2U is a peer-to-peer authentication protocol. This setting prevents online identities from authenticating to domain-joined systems. Authentication will be centrally managed with Windows user accounts.

Checks: C-64519r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Control\LSA\pku2u\ Value Name: AllowOnlineID Value Type: REG_DWORD Value: 0

Fix: F-69695r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network security: Allow PKU2U authentication requests to this computer to use online identities" to "Disabled".

b

Kerberos encryption types must be configured to prevent the use of DES and RC4 encryption suites.

IA-7 - Medium - CCI-000803 - V-63795 - SV-78285r1_rule

RMF Control

IA-7

Severity

M

CCI

CCI-000803

Version

WN10-SO-000190

Vuln IDs

V-63795

Rule IDs

SV-78285r1_rule

Certain encryption types are no longer considered secure. This setting configures a minimum encryption type for Kerberos, preventing the use of the DES and RC4 encryption suites.

Checks: C-64545r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters\ Value Name: SupportedEncryptionTypes Value Type: REG_DWORD Value: 0x7ffffff8 (2147483640)

Fix: F-69723r2_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network security: Configure encryption types allowed for Kerberos" to "Enabled" with only the following selected: AES128_HMAC_SHA1 AES256_HMAC_SHA1 Future encryption types

c

The system must be configured to prevent the storage of the LAN Manager hash of passwords.

IA-5 - High - CCI-000196 - V-63797 - SV-78287r1_rule

RMF Control

IA-5

Severity

H

CCI

CCI-000196

Version

WN10-SO-000195

Vuln IDs

V-63797

Rule IDs

SV-78287r1_rule

The LAN Manager hash uses a weak encryption algorithm and there are several tools available that use this hash to retrieve account passwords. This setting controls whether or not a LAN Manager hash of the password is stored in the SAM the next time the password is changed.

Checks: C-64547r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Control\Lsa\ Value Name: NoLMHash Value Type: REG_DWORD Value: 1

Fix: F-69725r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network security: Do not store LAN Manager hash value on next password change" to "Enabled".

c

The LanMan authentication level must be set to send NTLMv2 response only, and to refuse LM and NTLM.

CM-6 - High - CCI-000366 - V-63801 - SV-78291r1_rule

RMF Control

CM-6

Severity

H

CCI

Version

WN10-SO-000205

Vuln IDs

V-63801

Rule IDs

SV-78291r1_rule

The Kerberos v5 authentication protocol is the default for authentication of users who are logging on to domain accounts. NTLM, which is less secure, is retained in later Windows versions for compatibility with clients and servers that are running earlier versions of Windows or applications that still use it. It is also used to authenticate logons to stand-alone computers that are running later versions.

Checks: C-64551r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Control\Lsa\ Value Name: LmCompatibilityLevel Value Type: REG_DWORD Value: 5

Fix: F-69729r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network security: LAN Manager authentication level" to "Send NTLMv2 response only. Refuse LM & NTLM".

b

The system must be configured to the required LDAP client signing level.

CM-6 - Medium - CCI-000366 - V-63803 - SV-78293r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-SO-000210

Vuln IDs

V-63803

Rule IDs

SV-78293r1_rule

This setting controls the signing requirements for LDAP clients. This setting must be set to Negotiate signing or Require signing, depending on the environment and type of LDAP server in use.

Checks: C-64553r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Services\LDAP\ Value Name: LDAPClientIntegrity Value Type: REG_DWORD Value: 1

Fix: F-69731r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network security: LDAP client signing requirements" to "Negotiate signing" at a minimum.

b

The system must be configured to meet the minimum session security requirement for NTLM SSP based clients.

CM-6 - Medium - CCI-000366 - V-63805 - SV-78295r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-SO-000215

Vuln IDs

V-63805

Rule IDs

SV-78295r1_rule

Microsoft has implemented a variety of security support providers for use with RPC sessions. All of the options must be enabled to ensure the maximum security level.

Checks: C-64555r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Control\Lsa\MSV1_0\ Value Name: NTLMMinClientSec Value Type: REG_DWORD Value: 0x20080000 (537395200)

Fix: F-69733r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network security: Minimum session security for NTLM SSP based (including secure RPC) clients" to "Require NTLMv2 session security" and "Require 128-bit encryption" (all options selected).

b

The system must be configured to meet the minimum session security requirement for NTLM SSP based servers.

CM-6 - Medium - CCI-000366 - V-63807 - SV-78297r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-SO-000220

Vuln IDs

V-63807

Rule IDs

SV-78297r1_rule

Microsoft has implemented a variety of security support providers for use with RPC sessions. All of the options must be enabled to ensure the maximum security level.

Checks: C-64557r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Control\Lsa\MSV1_0\ Value Name: NTLMMinServerSec Value Type: REG_DWORD Value: 0x20080000 (537395200)

Fix: F-69735r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network security: Minimum session security for NTLM SSP based (including secure RPC) servers" to "Require NTLMv2 session security" and "Require 128-bit encryption" (all options selected).

b

The system must be configured to use FIPS-compliant algorithms for encryption, hashing, and signing.

SC-13 - Medium - CCI-002450 - V-63811 - SV-78301r1_rule

RMF Control

SC-13

Severity

M

CCI

CCI-002450

Version

WN10-SO-000230

Vuln IDs

V-63811

Rule IDs

SV-78301r1_rule

This setting ensures that the system uses algorithms that are FIPS-compliant for encryption, hashing, and signing. FIPS-compliant algorithms meet specific standards established by the U.S. Government and must be the algorithms used for all OS encryption functions.

Checks: C-64561r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Control\Lsa\FIPSAlgorithmPolicy\ Value Name: Enabled Value Type: REG_DWORD Value: 1 Warning: Clients with this setting enabled will not be able to communicate via digitally encrypted or signed protocols with servers that do not support these algorithms. Both the browser and web server must be configured to use TLS otherwise the browser will not be able to connect to a secure site.

Fix: F-69739r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "System cryptography: Use FIPS compliant algorithms for encryption, hashing, and signing" to "Enabled".

a

The default permissions of global system objects must be increased.

CM-6 - Low - CCI-000366 - V-63815 - SV-78305r1_rule

RMF Control

CM-6

Severity

L

CCI

Version

WN10-SO-000240

Vuln IDs

V-63815

Rule IDs

SV-78305r1_rule

Windows systems maintain a global list of shared system resources such as DOS device names, mutexes, and semaphores. Each type of object is created with a default DACL that specifies who can access the objects with what permissions. If this policy is enabled, the default DACL is stronger, allowing non-admin users to read shared objects, but not modify shared objects that they did not create.

Checks: C-64565r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Control\Session Manager\ Value Name: ProtectionMode Value Type: REG_DWORD Value: 1

Fix: F-69743r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "System objects: Strengthen default permissions of internal system objects (e.g. Symbolic links)" to "Enabled".

b

User Account Control approval mode for the built-in Administrator must be enabled.

IA-11 - Medium - CCI-002038 - V-63817 - SV-78307r1_rule

RMF Control

IA-11

Severity

M

CCI

Version

WN10-SO-000245

Vuln IDs

V-63817

Rule IDs

SV-78307r1_rule

User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting configures the built-in Administrator account so that it runs in Admin Approval Mode.

Checks: C-64567r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ Value Name: FilterAdministratorToken Value Type: REG_DWORD Value: 1

Fix: F-69745r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "User Account Control: Admin Approval Mode for the Built-in Administrator account" to "Enabled".

b

User Account Control must, at minimum, prompt administrators for consent on the secure desktop.

SC-3 - Medium - CCI-001084 - V-63819 - SV-78309r1_rule

RMF Control

SC-3

Severity

M

CCI

Version

WN10-SO-000250

Vuln IDs

V-63819

Rule IDs

SV-78309r1_rule

User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting configures the elevation requirements for logged on administrators to complete a task that requires raised privileges.

Checks: C-64569r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ Value Name: ConsentPromptBehaviorAdmin Value Type: REG_DWORD Value: 2 (Prompt for consent on the secure desktop)

Fix: F-69747r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "User Account Control: Behavior of the elevation prompt for administrators in Admin Approval Mode" to "Prompt for consent on the secure desktop".

b

User Account Control must automatically deny elevation requests for standard users.

IA-11 - Medium - CCI-002038 - V-63821 - SV-78311r1_rule

RMF Control

IA-11

Severity

M

CCI

Version

WN10-SO-000255

Vuln IDs

V-63821

Rule IDs

SV-78311r1_rule

User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. Denying elevation requests from standard user accounts requires tasks that need elevation to be initiated by accounts with administrative privileges. This ensures correct accounts are used on the system for privileged tasks to help mitigate credential theft.

Checks: C-64571r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ Value Name: ConsentPromptBehaviorUser Value Type: REG_DWORD Value: 0

Fix: F-69749r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "User Account Control: Behavior of the elevation prompt for standard users" to "Automatically deny elevation requests".

b

User Account Control must be configured to detect application installations and prompt for elevation.

SC-3 - Medium - CCI-001084 - V-63825 - SV-78315r1_rule

RMF Control

SC-3

Severity

M

CCI

Version

WN10-SO-000260

Vuln IDs

V-63825

Rule IDs

SV-78315r1_rule

User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting requires Windows to respond to application installation requests by prompting for credentials.

Checks: C-64575r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ Value Name: EnableInstallerDetection Value Type: REG_DWORD Value: 1

Fix: F-69753r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "User Account Control: Detect application installations and prompt for elevation" to "Enabled".

b

User Account Control must only elevate UIAccess applications that are installed in secure locations.

SC-3 - Medium - CCI-001084 - V-63827 - SV-78317r1_rule

RMF Control

SC-3

Severity

M

CCI

Version

WN10-SO-000265

Vuln IDs

V-63827

Rule IDs

SV-78317r1_rule

User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting configures Windows to only allow applications installed in a secure location on the file system, such as the Program Files or the Windows\System32 folders, to run with elevated privileges.

Checks: C-64577r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ Value Name: EnableSecureUIAPaths Value Type: REG_DWORD Value: 1

Fix: F-69755r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "User Account Control: Only elevate UIAccess applications that are installed in secure locations" to "Enabled".

b

User Account Control must run all administrators in Admin Approval Mode, enabling UAC.

IA-11 - Medium - CCI-002038 - V-63829 - SV-78319r1_rule

RMF Control

IA-11

Severity

M

CCI

Version

WN10-SO-000270

Vuln IDs

V-63829

Rule IDs

SV-78319r1_rule

User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting enables UAC.

Checks: C-64579r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ Value Name: EnableLUA Value Type: REG_DWORD Value: 1

Fix: F-69757r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "User Account Control: Run all administrators in Admin Approval Mode" to "Enabled".

b

User Account Control must virtualize file and registry write failures to per-user locations.

SC-3 - Medium - CCI-001084 - V-63831 - SV-78321r1_rule

RMF Control

SC-3

Severity

M

CCI

Version

WN10-SO-000275

Vuln IDs

V-63831

Rule IDs

SV-78321r1_rule

User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting configures non-UAC compliant applications to run in virtualized file and registry entries in per-user locations, allowing them to run.

Checks: C-64581r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ Value Name: EnableVirtualization Value Type: REG_DWORD Value: 1

Fix: F-69759r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "User Account Control: Virtualize file and registry write failures to per-user locations" to "Enabled".

a

Toast notifications to the lock screen must be turned off.

CM-7 - Low - CCI-000381 - V-63839 - SV-78329r1_rule

RMF Control

CM-7

Severity

L

CCI

Version

WN10-UC-000015

Vuln IDs

V-63839

Rule IDs

SV-78329r1_rule

Toast notifications that are displayed on the lock screen could display sensitive information to unauthorized personnel. Turning off this feature will limit access to the information to a logged on user.

Checks: C-64589r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_CURRENT_USER Registry Path: \SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\PushNotifications\ Value Name: NoToastApplicationNotificationOnLockScreen Value Type: REG_DWORD Value: 1

Fix: F-69767r1_fix

Configure the policy value for User Configuration >> Administrative Templates >> Start Menu and Taskbar >> Notifications >> "Turn off toast notifications on the lock screen" to "Enabled".

b

Zone information must be preserved when saving attachments.

CM-6 - Medium - CCI-000366 - V-63841 - SV-78331r2_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-UC-000020

Vuln IDs

V-63841

Rule IDs

SV-78331r2_rule

Preserving zone of origin (internet, intranet, local, restricted) information on file attachments allows Windows to determine risk.

Checks: C-72015r2_chk

The default behavior is for Windows to mark file attachments with their zone information. If the registry Value Name below does not exist, this is not a finding. If it exists and is configured with a value of "2", this is not a finding. If it exists and is configured with a value of "1", this is a finding. Registry Hive: HKEY_CURRENT_USER Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Attachments\ Value Name: SaveZoneInformation Value Type: REG_DWORD Value: 0x00000002 (2) (or if the Value Name does not exist)

Fix: F-78717r1_fix

The default behavior is for Windows to mark file attachments with their zone information. If this needs to be corrected, configure the policy value for User Configuration >> Administrative Templates >> Windows Components >> Attachment Manager >> "Do not preserve zone information in file attachments" to "Not Configured" or "Disabled".

b

The Access Credential Manager as a trusted caller user right must not be assigned to any groups or accounts.

AC-6 - Medium - CCI-002235 - V-63843 - SV-78333r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000005

Vuln IDs

V-63843

Rule IDs

SV-78333r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Access Credential Manager as a trusted caller" user right may be able to retrieve the credentials of other accounts from Credential Manager.

Checks: C-64593r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts are granted the "Access Credential Manager as a trusted caller" user right, this is a finding.

Fix: F-69771r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Access Credential Manager as a trusted caller" to be defined but containing no entries (blank).

b

The Access this computer from the network user right must only be assigned to the Administrators and Remote Desktop Users groups.

AC-3 - Medium - CCI-000213 - V-63845 - SV-78335r3_rule

RMF Control

AC-3

Severity

M

CCI

Version

WN10-UR-000010

Vuln IDs

V-63845

Rule IDs

SV-78335r3_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Access this computer from the network" user right may access resources on the system, and must be limited to those that require it.

Checks: C-78091r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts other than the following are granted the "Access this computer from the network" user right, this is a finding: Administrators Remote Desktop Users If a domain application account such as for a management tool requires this user right, this would not be a finding. Vendor documentation must support the requirement for having the user right. The requirement must be documented with the ISSO. The application account, managed at the domain level, must meet requirements for application account passwords, such as length and frequency of changes as defined in the Windows server STIGs.

Fix: F-81289r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Access this computer from the network" to only include the following groups or accounts: Administrators Remote Desktop Users

c

The Act as part of the operating system user right must not be assigned to any groups or accounts.

AC-6 - High - CCI-002235 - V-63847 - SV-78337r1_rule

RMF Control

AC-6

Severity

H

CCI

Version

WN10-UR-000015

Vuln IDs

V-63847

Rule IDs

SV-78337r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Act as part of the operating system" user right can assume the identity of any user and gain access to resources that user is authorized to access. Any accounts with this right can take complete control of a system.

Checks: C-64597r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts (to include administrators), are granted the "Act as part of the operating system" user right, this is a finding.

Fix: F-69775r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Act as part of the operating system" to be defined but containing no entries (blank).

b

The Allow log on locally user right must only be assigned to the Administrators and Users groups.

AC-3 - Medium - CCI-000213 - V-63851 - SV-78341r2_rule

RMF Control

AC-3

Severity

M

CCI

Version

WN10-UR-000025

Vuln IDs

V-63851

Rule IDs

SV-78341r2_rule

Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Allow log on locally" user right can log on interactively to a system.

Checks: C-81367r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts other than the following are granted the "Allow log on locally" user right, this is a finding: Administrators Users

Fix: F-88439r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Allow log on locally" to only include the following groups or accounts: Administrators Users

b

The Back up files and directories user right must only be assigned to the Administrators group.

AC-6 - Medium - CCI-002235 - V-63853 - SV-78343r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000030

Vuln IDs

V-63853

Rule IDs

SV-78343r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Back up files and directories" user right can circumvent file and directory permissions and could allow access to sensitive data."

Checks: C-64603r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts other than the following are granted the "Back up files and directories" user right, this is a finding: Administrators

Fix: F-69781r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Back up files and directories" to only include the following groups or accounts: Administrators

b

The Change the system time user right must only be assigned to Administrators and Local Service.

AC-6 - Medium - CCI-002235 - V-63855 - SV-78345r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000035

Vuln IDs

V-63855

Rule IDs

SV-78345r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Change the system time" user right can change the system time, which can impact authentication, as well as affect time stamps on event log entries.

Checks: C-64605r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts other than the following are granted the "Change the system time" user right, this is a finding: Administrators LOCAL SERVICE

Fix: F-69783r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Change the system time" to only include the following groups or accounts: Administrators LOCAL SERVICE

b

The Create a pagefile user right must only be assigned to the Administrators group.

AC-6 - Medium - CCI-002235 - V-63857 - SV-78347r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000040

Vuln IDs

V-63857

Rule IDs

SV-78347r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Create a pagefile" user right can change the size of a pagefile, which could affect system performance.

Checks: C-64607r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts other than the following are granted the "Create a pagefile" user right, this is a finding: Administrators

Fix: F-69785r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Create a pagefile" to only include the following groups or accounts: Administrators

c

The Create a token object user right must not be assigned to any groups or accounts.

AC-6 - High - CCI-002235 - V-63859 - SV-78349r1_rule

RMF Control

AC-6

Severity

H

CCI

Version

WN10-UR-000045

Vuln IDs

V-63859

Rule IDs

SV-78349r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. The "Create a token object" user right allows a process to create an access token. This could be used to provide elevated rights and compromise a system.

Checks: C-64609r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts are granted the "Create a token object" user right, this is a finding.

Fix: F-69787r2_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Create a token object" to be defined but containing no entries (blank).

b

The Create global objects user right must only be assigned to Administrators, Service, Local Service, and Network Service.

AC-6 - Medium - CCI-002235 - V-63861 - SV-78351r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000050

Vuln IDs

V-63861

Rule IDs

SV-78351r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Create global objects" user right can create objects that are available to all sessions, which could affect processes in other users' sessions.

Checks: C-64611r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts other than the following are granted the "Create global objects" user right, this is a finding: Administrators LOCAL SERVICE NETWORK SERVICE SERVICE

Fix: F-69789r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Create global objects" to only include the following groups or accounts: Administrators LOCAL SERVICE NETWORK SERVICE SERVICE

b

The Create permanent shared objects user right must not be assigned to any groups or accounts.

AC-6 - Medium - CCI-002235 - V-63863 - SV-78353r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000055

Vuln IDs

V-63863

Rule IDs

SV-78353r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Create permanent shared objects" user right could expose sensitive data by creating shared objects.

Checks: C-64613r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts are granted the "Create permanent shared objects" user right, this is a finding.

Fix: F-69791r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Create permanent shared objects" to be defined but containing no entries (blank).

b

The Create symbolic links user right must only be assigned to the Administrators group.

AC-6 - Medium - CCI-002235 - V-63865 - SV-78355r2_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000060

Vuln IDs

V-63865

Rule IDs

SV-78355r2_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Create symbolic links" user right can create pointers to other objects, which could potentially expose the system to attack.

Checks: C-76167r2_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts other than the following are granted the "Create symbolic links" user right, this is a finding: Administrators If the workstation has an approved use of Hyper-V, such as being used as a dedicated admin workstation using Hyper-V to separate administration and standard user functions, "NT VIRTUAL MACHINES\VIRTUAL MACHINE" may be assigned this user right and is not a finding.

Fix: F-69793r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Create symbolic links" to only include the following groups or accounts: Administrators

c

The Debug programs user right must only be assigned to the Administrators group.

AC-6 - High - CCI-002235 - V-63869 - SV-78359r1_rule

RMF Control

AC-6

Severity

H

CCI

Version

WN10-UR-000065

Vuln IDs

V-63869

Rule IDs

SV-78359r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Debug Programs" user right can attach a debugger to any process or to the kernel, providing complete access to sensitive and critical operating system components. This right is given to Administrators in the default configuration.

Checks: C-64619r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts other than the following are granted the "Debug Programs" user right, this is a finding: Administrators

Fix: F-69797r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Debug programs" to only include the following groups or accounts: Administrators

b

The Deny access to this computer from the network user right on workstations must be configured to prevent access from highly privileged domain accounts and local accounts on domain systems and unauthenticated access on all systems.

AC-3 - Medium - CCI-000213 - V-63871 - SV-78361r3_rule

RMF Control

AC-3

Severity

M

CCI

Version

WN10-UR-000070

Vuln IDs

V-63871

Rule IDs

SV-78361r3_rule

Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Deny access to this computer from the network" right defines the accounts that are prevented from logging on from the network. In an Active Directory Domain, denying logons to the Enterprise Admins and Domain Admins groups on lower trust systems helps mitigate the risk of privilege escalation from credential theft attacks, which could lead to the compromise of an entire domain. Local accounts on domain-joined systems must also be assigned this right to decrease the risk of lateral movement resulting from credential theft attacks. The Guests group must be assigned this right to prevent unauthenticated access.

Checks: C-81369r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If the following groups or accounts are not defined for the "Deny access to this computer from the network" right, this is a finding: Domain Systems Only: Enterprise Admins group Domain Admins group Local account (see Note below) All Systems: Guests group Privileged Access Workstations (PAWs) dedicated to the management of Active Directory are exempt from denying the Enterprise Admins and Domain Admins groups. (See the Windows Privileged Access Workstation STIG for PAW requirements.) Note: "Local account" is a built-in security group used to assign user rights and permissions to all local accounts.

Fix: F-88441r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny access to this computer from the network" to include the following. Domain Systems Only: Enterprise Admins group Domain Admins group Local account (see Note below) All Systems: Guests group Privileged Access Workstations (PAWs) dedicated to the management of Active Directory are exempt from denying the Enterprise Admins and Domain Admins groups. (See the Windows Privileged Access Workstation STIG for PAW requirements.) Note: "Local account" is a built-in security group used to assign user rights and permissions to all local accounts.

b

The Deny log on as a batch job user right on domain-joined workstations must be configured to prevent access from highly privileged domain accounts.

AC-3 - Medium - CCI-000213 - V-63873 - SV-78363r1_rule

RMF Control

AC-3

Severity

M

CCI

Version

WN10-UR-000075

Vuln IDs

V-63873

Rule IDs

SV-78363r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. The "Deny log on as a batch job" right defines accounts that are prevented from logging on to the system as a batch job, such as Task Scheduler. In an Active Directory Domain, denying logons to the Enterprise Admins and Domain Admins groups on lower trust systems helps mitigate the risk of privilege escalation from credential theft attacks which could lead to the compromise of an entire domain.

Checks: C-64623r1_chk

This requirement is applicable to domain-joined systems, for standalone systems this is NA. Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If the following groups or accounts are not defined for the "Deny log on as a batch job" right, this is a finding: Domain Systems Only: Enterprise Admin Group Domain Admin Group

Fix: F-69801r1_fix

This requirement is applicable to domain-joined systems, for standalone systems this is NA. Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny log on as a batch job" to include the following. Domain Systems Only: Enterprise Admin Group Domain Admin Group

b

The Deny log on as a service user right on Windows 10 domain-joined workstations must be configured to prevent access from highly privileged domain accounts.

AC-3 - Medium - CCI-000213 - V-63875 - SV-78365r2_rule

RMF Control

AC-3

Severity

M

CCI

Version

WN10-UR-000080

Vuln IDs

V-63875

Rule IDs

SV-78365r2_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. The "Deny log on as a service" right defines accounts that are denied log on as a service. In an Active Directory Domain, denying logons to the Enterprise Admins and Domain Admins groups on lower trust systems helps mitigate the risk of privilege escalation from credential theft attacks which could lead to the compromise of an entire domain. Incorrect configurations could prevent services from starting and result in a DoS.

Checks: C-94081r1_chk

This requirement is applicable to domain-joined systems, for standalone systems this is NA. Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If the following groups or accounts are not defined for the "Deny log on as a service" right , this is a finding: Domain Systems Only: Enterprise Admins Group Domain Admins Group

Fix: F-100993r1_fix

This requirement is applicable to domain-joined systems, for standalone systems this is NA. Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny log on as a service" to include the following. Domain Systems Only: Enterprise Admins Group Domain Admins Group

b

The Deny log on locally user right on workstations must be configured to prevent access from highly privileged domain accounts on domain systems and unauthenticated access on all systems.

AC-3 - Medium - CCI-000213 - V-63877 - SV-78367r2_rule

RMF Control

AC-3

Severity

M

CCI

Version

WN10-UR-000085

Vuln IDs

V-63877

Rule IDs

SV-78367r2_rule

Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Deny log on locally" right defines accounts that are prevented from logging on interactively. In an Active Directory Domain, denying logons to the Enterprise Admins and Domain Admins groups on lower trust systems helps mitigate the risk of privilege escalation from credential theft attacks, which could lead to the compromise of an entire domain. The Guests group must be assigned this right to prevent unauthenticated access.

Checks: C-81371r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If the following groups or accounts are not defined for the "Deny log on locally" right, this is a finding. Domain Systems Only: Enterprise Admins Group Domain Admins Group Privileged Access Workstations (PAWs) dedicated to the management of Active Directory are exempt from denying the Enterprise Admins and Domain Admins groups. (See the Windows Privileged Access Workstation STIG for PAW requirements.) All Systems: Guests Group

Fix: F-88443r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny log on locally" to include the following. Domain Systems Only: Enterprise Admins Group Domain Admins Group Privileged Access Workstations (PAWs) dedicated to the management of Active Directory are exempt from denying the Enterprise Admins and Domain Admins groups. (See the Windows Privileged Access Workstation STIG for PAW requirements.) All Systems: Guests Group

b

The Deny log on through Remote Desktop Services user right on Windows 10 workstations must at a minimum be configured to prevent access from highly privileged domain accounts and local accounts on domain systems and unauthenticated access on all systems.

AC-3 - Medium - CCI-000213 - V-63879 - SV-78369r4_rule

RMF Control

AC-3

Severity

M

CCI

Version

WN10-UR-000090

Vuln IDs

V-63879

Rule IDs

SV-78369r4_rule

Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Deny log on through Remote Desktop Services" right defines the accounts that are prevented from logging on using Remote Desktop Services. If Remote Desktop Services is not used by the organization, the Everyone group must be assigned this right to prevent all access. In an Active Directory Domain, denying logons to the Enterprise Admins and Domain Admins groups on lower trust systems helps mitigate the risk of privilege escalation from credential theft attacks, which could lead to the compromise of an entire domain. Local accounts on domain-joined systems must also be assigned this right to decrease the risk of lateral movement resulting from credential theft attacks. The Guests group must be assigned this right to prevent unauthenticated access.

Checks: C-94083r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If the following groups or accounts are not defined for the "Deny log on through Remote Desktop Services" right, this is a finding: If Remote Desktop Services is not used by the organization, the "Everyone" group can replace all of the groups listed below. Domain Systems Only: Enterprise Admins group Domain Admins group Local account (see Note below) All Systems: Guests group Privileged Access Workstations (PAWs) dedicated to the management of Active Directory are exempt from denying the Enterprise Admins and Domain Admins groups. (See the Windows Privileged Access Workstation STIG for PAW requirements.) Note: "Local account" is a built-in security group used to assign user rights and permissions to all local accounts.

Fix: F-88445r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny log on through Remote Desktop Services" to include the following. If Remote Desktop Services is not used by the organization, assign the Everyone group this right to prevent all access. Domain Systems Only: Enterprise Admins group Domain Admins group Local account (see Note below) All Systems: Guests group Privileged Access Workstations (PAWs) dedicated to the management of Active Directory are exempt from denying the Enterprise Admins and Domain Admins groups. (See the Windows Privileged Access Workstation STIG for PAW requirements.) Note: "Local account" is a built-in security group used to assign user rights and permissions to all local accounts.

b

The Enable computer and user accounts to be trusted for delegation user right must not be assigned to any groups or accounts.

AC-6 - Medium - CCI-002235 - V-63881 - SV-78371r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000095

Vuln IDs

V-63881

Rule IDs

SV-78371r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. The "Enable computer and user accounts to be trusted for delegation" user right allows the "Trusted for Delegation" setting to be changed. This could potentially allow unauthorized users to impersonate other users.

Checks: C-64631r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts are granted the "Enable computer and user accounts to be trusted for delegation" user right, this is a finding.

Fix: F-69809r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Enable computer and user accounts to be trusted for delegation" to be defined but containing no entries (blank).

b

The Force shutdown from a remote system user right must only be assigned to the Administrators group.

AC-6 - Medium - CCI-002235 - V-63883 - SV-78373r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000100

Vuln IDs

V-63883

Rule IDs

SV-78373r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Force shutdown from a remote system" user right can remotely shut down a system which could result in a DoS.

Checks: C-64633r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts other than the following are granted the "Force shutdown from a remote system" user right, this is a finding: Administrators

Fix: F-69811r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Force shutdown from a remote system" to only include the following groups or accounts: Administrators

b

The Impersonate a client after authentication user right must only be assigned to Administrators, Service, Local Service, and Network Service.

AC-6 - Medium - CCI-002235 - V-63889 - SV-78379r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000110

Vuln IDs

V-63889

Rule IDs

SV-78379r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. The "Impersonate a client after authentication" user right allows a program to impersonate another user or account to run on their behalf. An attacker could potentially use this to elevate privileges.

Checks: C-64639r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts other than the following are granted the "Impersonate a client after authentication" user right, this is a finding: Administrators LOCAL SERVICE NETWORK SERVICE SERVICE

Fix: F-69817r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Impersonate a client after authentication" to only include the following groups or accounts: Administrators LOCAL SERVICE NETWORK SERVICE SERVICE

b

The Load and unload device drivers user right must only be assigned to the Administrators group.

AC-6 - Medium - CCI-002235 - V-63917 - SV-78407r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000120

Vuln IDs

V-63917

Rule IDs

SV-78407r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. The "Load and unload device drivers" user right allows device drivers to dynamically be loaded on a system by a user. This could potentially be used to install malicious code by an attacker.

Checks: C-64667r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts other than the following are granted the "Load and unload device drivers" user right, this is a finding: Administrators

Fix: F-69845r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Load and unload device drivers" to only include the following groups or accounts: Administrators

b

The Lock pages in memory user right must not be assigned to any groups or accounts.

AC-6 - Medium - CCI-002235 - V-63925 - SV-78415r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000125

Vuln IDs

V-63925

Rule IDs

SV-78415r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. The "Lock pages in memory" user right allows physical memory to be assigned to processes, which could cause performance issues or a DoS.

Checks: C-64675r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts are granted the "Lock pages in memory" user right, this is a finding.

Fix: F-69853r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Lock pages in memory" to be defined but containing no entries (blank).

b

The Manage auditing and security log user right must only be assigned to the Administrators group.

AU-9 - Medium - CCI-000162 - V-63927 - SV-78417r1_rule

RMF Control

AU-9

Severity

M

CCI

Version

WN10-UR-000130

Vuln IDs

V-63927

Rule IDs

SV-78417r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Manage auditing and security log" user right can manage the security log and change auditing configurations. This could be used to clear evidence of tampering.

Checks: C-64677r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts other than the following are granted the "Manage auditing and security log" user right, this is a finding: Administrators If the organization has an "Auditors" group the assignment of this group to the user right would not be a finding.

Fix: F-69855r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Manage auditing and security log" to only include the following groups or accounts: Administrators

b

The Modify firmware environment values user right must only be assigned to the Administrators group.

AC-6 - Medium - CCI-002235 - V-63931 - SV-78421r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000140

Vuln IDs

V-63931

Rule IDs

SV-78421r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Modify firmware environment values" user right can change hardware configuration environment variables. This could result in hardware failures or a DoS.

Checks: C-64681r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts other than the following are granted the "Modify firmware environment values" user right, this is a finding: Administrators

Fix: F-69859r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Modify firmware environment values" to only include the following groups or accounts: Administrators

b

The Perform volume maintenance tasks user right must only be assigned to the Administrators group.

AC-6 - Medium - CCI-002235 - V-63933 - SV-78423r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000145

Vuln IDs

V-63933

Rule IDs

SV-78423r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Perform volume maintenance tasks" user right can manage volume and disk configurations. They could potentially delete volumes, resulting in, data loss or a DoS.

Checks: C-64683r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts other than the following are granted the "Perform volume maintenance tasks" user right, this is a finding: Administrators

Fix: F-69861r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Perform volume maintenance tasks" to only include the following groups or accounts: Administrators

b

The Profile single process user right must only be assigned to the Administrators group.

AC-6 - Medium - CCI-002235 - V-63935 - SV-78425r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000150

Vuln IDs

V-63935

Rule IDs

SV-78425r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Profile single process" user right can monitor non-system processes performance. An attacker could potentially use this to identify processes to attack.

Checks: C-64685r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts other than the following are granted the "Profile single process" user right, this is a finding: Administrators

Fix: F-69863r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Profile single process" to only include the following groups or accounts: Administrators

b

The Restore files and directories user right must only be assigned to the Administrators group.

AC-6 - Medium - CCI-002235 - V-63939 - SV-78429r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000160

Vuln IDs

V-63939

Rule IDs

SV-78429r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Restore files and directories" user right can circumvent file and directory permissions and could allow access to sensitive data. It could also be used to over-write more current data.

Checks: C-64691r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts other than the following are granted the "Restore files and directories" user right, this is a finding: Administrators

Fix: F-69867r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Restore files and directories" to only include the following groups or accounts: Administrators

b

The Take ownership of files or other objects user right must only be assigned to the Administrators group.

AC-6 - Medium - CCI-002235 - V-63941 - SV-78431r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000165

Vuln IDs

V-63941

Rule IDs

SV-78431r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Take ownership of files or other objects" user right can take ownership of objects and make changes.

Checks: C-64693r1_chk

Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts other than the following are granted the "Take ownership of files or other objects" user right, this is a finding: Administrators

Fix: F-69869r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Take ownership of files or other objects" to only include the following groups or accounts: Administrators

a

Windows Update must not obtain updates from other PCs on the Internet.

CM-6 - Low - CCI-000366 - V-65681 - SV-80171r3_rule

RMF Control

CM-6

Severity

L

CCI

Version

WN10-CC-000206

Vuln IDs

V-65681

Rule IDs

SV-80171r3_rule

Windows 10 allows Windows Update to obtain updates from additional sources instead of Microsoft. In addition to Microsoft, updates can be obtained from and sent to PCs on the local network as well as on the Internet. This is part of the Windows Update trusted process, however to minimize outside exposure, obtaining updates from or sending to systems on the Internet must be prevented.

Checks: C-76221r2_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization\ Value Name: DODownloadMode Value Type: REG_DWORD Value: 0x00000000 (0) - No peering (HTTP Only) 0x00000001 (1) - Peers on same NAT only (LAN) 0x00000002 (2) - Local Network / Private group peering (Group) 0x00000063 (99) - Simple download mode, no peering (Simple) 0x00000064 (100) - Bypass mode, Delivery Optimization not used (Bypass) A value of 0x00000003 (3), Internet, is a finding. v1507 LTSB: Domain joined systems: Verify the registry value above. If the value is not 0x00000000 (0) or 0x00000001 (1), this is a finding. Standalone systems (configured in Settings): If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\ Value Name: DODownloadMode Value Type: REG_DWORD Value: 0x00000000 (0) - Off 0x00000001 (1) - LAN

Fix: F-83251r4_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Delivery Optimization >> "Download Mode" to "Enabled" with any option except "Internet" selected. Acceptable selections include: Bypass (100) Group (2) HTTP only (0) LAN (1) Simple (99) v1507 (LTSB) does not include this group policy setting locally. For domain joined systems, configure through domain group policy as "HTTP only (0)" or "Lan (1)". Standalone systems configure using Settings >> Update & Security >> Windows Update >> Advanced Options >> "Choose how updates are delivered" with either "Off" or "PCs on my local network" selected.

b

Command line data must be included in process creation events.

AU-3 - Medium - CCI-000135 - V-68817 - SV-83409r1_rule

RMF Control

AU-3

Severity

M

CCI

CCI-000135

Version

WN10-CC-000066

Vuln IDs

V-68817

Rule IDs

SV-83409r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Enabling "Include command line data for process creation events" will record the command line information with the process creation events in the log. This can provide additional detail when malware has run on a system.

Checks: C-69305r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\Audit\ Value Name: ProcessCreationIncludeCmdLine_Enabled Value Type: REG_DWORD Value: 1

Fix: F-74987r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Audit Process Creation >> "Include command line in process creation events" to "Enabled".

b

PowerShell script block logging must be enabled on Windows 10.

AU-3 - Medium - CCI-000135 - V-68819 - SV-83411r2_rule

RMF Control

AU-3

Severity

M

CCI

CCI-000135

Version

WN10-CC-000326

Vuln IDs

V-68819

Rule IDs

SV-83411r2_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Enabling PowerShell script block logging will record detailed information from the processing of PowerShell commands and scripts. This can provide additional detail when malware has run on a system.

Checks: C-94087r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\PowerShell\ScriptBlockLogging\ Value Name: EnableScriptBlockLogging Value Type: REG_DWORD Value: 1

Fix: F-74989r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows PowerShell >> "Turn on PowerShell Script Block Logging" to "Enabled".

c

Data Execution Prevention (DEP) must be configured to at least OptOut.

SI-16 - High - CCI-002824 - V-68845 - SV-83439r2_rule

RMF Control

SI-16

Severity

H

CCI

Version

WN10-00-000145

Vuln IDs

V-68845

Rule IDs

SV-83439r2_rule

Attackers are constantly looking for vulnerabilities in systems and applications. Data Execution Prevention (DEP) prevents harmful code from running in protected memory locations reserved for Windows and other programs.

Checks: C-77535r1_chk

Verify the DEP configuration. Open a command prompt (cmd.exe) or PowerShell with elevated privileges (Run as administrator). Enter "BCDEdit /enum {current}". (If using PowerShell "{current}" must be enclosed in quotes.) If the value for "nx" is not "OptOut", this is a finding. (The more restrictive configuration of "AlwaysOn" would not be a finding.)

Fix: F-75017r2_fix

Configure DEP to at least OptOut. Note: Suspend BitLocker before making changes to the DEP configuration. Open a command prompt (cmd.exe) or PowerShell with elevated privileges (Run as administrator). Enter "BCDEDIT /set {current} nx OptOut". (If using PowerShell "{current}" must be enclosed in quotes.) "AlwaysOn", a more restrictive selection, is also valid but does not allow applications that do not function properly to be opted out of DEP. Opted out exceptions can be configured in the "System Properties". Open "System" in Control Panel. Select "Advanced system settings". Click "Settings" in the "Performance" section. Select the "Data Execution Prevention" tab. Applications that are opted out are configured in the window below the selection "Turn on DEP for all programs and services except those I select:".

c

Structured Exception Handling Overwrite Protection (SEHOP) must be enabled.

SI-16 - High - CCI-002824 - V-68849 - SV-83445r4_rule

RMF Control

SI-16

Severity

H

CCI

Version

WN10-00-000150

Vuln IDs

V-68849

Rule IDs

SV-83445r4_rule

Attackers are constantly looking for vulnerabilities in systems and applications. Structured Exception Handling Overwrite Protection (SEHOP) blocks exploits that use the Structured Exception Handling overwrite technique, a common buffer overflow attack.

Checks: C-80163r1_chk

This is applicable to Windows 10 prior to v1709. Verify SEHOP is turned on. If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Control\Session Manager\kernel\ Value Name: DisableExceptionChainValidation Value Type: REG_DWORD Value: 0x00000000 (0)

Fix: F-87295r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MS Security Guide >> "Enable Structured Exception Handling Overwrite Protection (SEHOP)" to "Enabled". This policy setting requires the installation of the SecGuide custom templates included with the STIG package. "SecGuide.admx" and "SecGuide.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

b

The Windows PowerShell 2.0 feature must be disabled on the system.

CM-7 - Medium - CCI-000381 - V-70637 - SV-85259r2_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-00-000155

Vuln IDs

V-70637

Rule IDs

SV-85259r2_rule

Windows PowerShell 5.0 added advanced logging features which can provide additional detail when malware has been run on a system. Disabling the Windows PowerShell 2.0 mitigates against a downgrade attack that evades the Windows PowerShell 5.0 script block logging feature.

Checks: C-91429r1_chk

Run "Windows PowerShell" with elevated privileges (run as administrator). Enter the following: Get-WindowsOptionalFeature -Online | Where FeatureName -like *PowerShellv2* If either of the following have a "State" of "Enabled", this is a finding. FeatureName : MicrosoftWindowsPowerShellV2 State : Enabled FeatureName : MicrosoftWindowsPowerShellV2Root State : Enabled Alternately: Search for "Features". Select "Turn Windows features on or off". If "Windows PowerShell 2.0" (whether the subcategory of "Windows PowerShell 2.0 Engine" is selected or not) is selected, this is a finding.

Fix: F-76869r1_fix

Disable "Windows PowerShell 2.0" on the system. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter the following: Disable-WindowsOptionalFeature -Online -FeatureName MicrosoftWindowsPowerShellV2Root This command should disable both "MicrosoftWindowsPowerShellV2Root" and "MicrosoftWindowsPowerShellV2" which correspond to "Windows PowerShell 2.0" and "Windows PowerShell 2.0 Engine" respectively in "Turn Windows features on or off". Alternately: Search for "Features". Select "Turn Windows features on or off". De-select "Windows PowerShell 2.0".

b

The Server Message Block (SMB) v1 protocol must be disabled on the system.

CM-7 - Medium - CCI-000381 - V-70639 - SV-85261r2_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-00-000160

Vuln IDs

V-70639

Rule IDs

SV-85261r2_rule

SMBv1 is a legacy protocol that uses the MD5 algorithm as part of SMB. MD5 is known to be vulnerable to a number of attacks such as collision and preimage attacks as well as not being FIPS compliant. Disabling SMBv1 support may prevent access to file or print sharing resources with systems or devices that only support SMBv1. File shares and print services hosted on Windows Server 2003 are an example, however Windows Server 2003 is no longer a supported operating system. Some older Network Attached Storage (NAS) devices may only support SMBv1.

Checks: C-74581r2_chk

Different methods are available to disable SMBv1 on Windows 10. This is the preferred method, however if V-74723 and V-74725 are configured, this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter the following: Get-WindowsOptionalFeature -Online | Where FeatureName -eq SMB1Protocol If "State : Enabled" is returned, this is a finding. Alternately: Search for "Features". Select "Turn Windows features on or off". If "SMB 1.0/CIFS File Sharing Support" is selected, this is a finding.

Fix: F-76871r2_fix

Disable the SMBv1 protocol. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter the following: Disable-WindowsOptionalFeature -Online -FeatureName SMB1Protocol Alternately: Search for "Features". Select "Turn Windows features on or off". De-select "SMB 1.0/CIFS File Sharing Support".

b

The system must be configured to audit Logon/Logoff - Account Lockout failures.

AU-12 - Medium - CCI-000172 - V-71759 - SV-86383r2_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000054

Vuln IDs

V-71759

Rule IDs

SV-86383r2_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Account Lockout events can be used to identify potentially malicious logon attempts.

Checks: C-72017r2_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*" Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Logon/Logoff >> Account Lockout - Failure

Fix: F-78111r2_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Logon/Logoff >> "Audit Account Lockout" with "Failure" selected.

b

The system must be configured to audit Policy Change - Authorization Policy Change successes.

AU-12 - Medium - CCI-000172 - V-71761 - SV-86385r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000107

Vuln IDs

V-71761

Rule IDs

SV-86385r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Authorization Policy Change records events related to changes in user rights, such as Create a token object.

Checks: C-72019r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: -Open a Command Prompt with elevated privileges ("Run as Administrator"). -Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding. Policy Change >> Authorization Policy Change - Success

Fix: F-78113r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Policy Change >> "Audit Authorization Policy Change" with "Success" selected.

b

WDigest Authentication must be disabled.

CM-7 - Medium - CCI-000381 - V-71763 - SV-86387r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-CC-000038

Vuln IDs

V-71763

Rule IDs

SV-86387r1_rule

When the WDigest Authentication protocol is enabled, plain text passwords are stored in the Local Security Authority Subsystem Service (LSASS) exposing them to theft. WDigest is disabled by default in Windows 10. This setting ensures this is enforced.

Checks: C-72021r3_chk

If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Control\SecurityProviders\Wdigest\ Value Name: UseLogonCredential Type: REG_DWORD Value: 0x00000000 (0)

Fix: F-78115r4_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MS Security Guide >> "WDigest Authentication (disabling may require KB2871997)" to "Disabled". The patch referenced in the policy title is not required for Windows 10. This policy setting requires the installation of the SecGuide custom templates included with the STIG package. "SecGuide.admx" and "SecGuide.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

b

Internet connection sharing must be disabled.

CM-7 - Medium - CCI-000381 - V-71765 - SV-86389r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-CC-000044

Vuln IDs

V-71765

Rule IDs

SV-86389r1_rule

Internet connection sharing makes it possible for an existing internet connection, such as through wireless, to be shared and used by other systems essentially creating a mobile hotspot. This exposes the system sharing the connection to others with potentially malicious purpose.

Checks: C-72023r2_chk

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\Network Connections\ Value Name: NC_ShowSharedAccessUI Type: REG_DWORD Value: 0x00000000 (0)

Fix: F-78117r2_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Network >> Network Connections >> "Prohibit use of Internet Connection Sharing on your DNS domain network" to "Enabled".

b

Remote calls to the Security Account Manager (SAM) must be restricted to Administrators.

AC-6 - Medium - CCI-002235 - V-71769 - SV-86393r3_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-SO-000167

Vuln IDs

V-71769

Rule IDs

SV-86393r3_rule

The Windows Security Account Manager (SAM) stores users' passwords. Restricting remote rpc connections to the SAM to Administrators helps protect those credentials.

Checks: C-76223r2_chk

Windows 10 v1507 LTSB version does not include this setting, it is NA for those systems. If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Control\Lsa\ Value Name: RestrictRemoteSAM Value Type: REG_SZ Value: O:BAG:BAD:(A;;RC;;;BA)

Fix: F-78121r3_fix

Navigate to the policy Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network access: Restrict clients allowed to make remote calls to SAM". Select "Edit Security" to configure the "Security descriptor:". Add "Administrators" in "Group or user names:" if it is not already listed (this is the default). Select "Administrators" in "Group or user names:". Select "Allow" for "Remote Access" in "Permissions for "Administrators". Click "OK". The "Security descriptor:" must be populated with "O:BAG:BAD:(A;;RC;;;BA) for the policy to be enforced.

a

Microsoft consumer experiences must be turned off.

CM-7 - Low - CCI-000381 - V-71771 - SV-86395r2_rule

RMF Control

CM-7

Severity

L

CCI

Version

WN10-CC-000197

Vuln IDs

V-71771

Rule IDs

SV-86395r2_rule

Microsoft consumer experiences provides suggestions and notifications to users, which may include the installation of Windows Store apps. Organizations may control the execution of applications through other means such as whitelisting. Turning off Microsoft consumer experiences will help prevent the unwanted installation of suggested applications.

Checks: C-81363r2_chk

Windows 10 v1507 LTSB version does not include this setting; it is NA for those systems. If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\CloudContent\ Value Name: DisableWindowsConsumerFeatures Type: REG_DWORD Value: 0x00000001 (1)

Fix: F-78123r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Cloud Content >> "Turn off Microsoft consumer experiences" to "Enabled".

b

Run as different user must be removed from context menus.

CM-7 - Medium - CCI-000381 - V-72329 - SV-86953r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-CC-000039

Vuln IDs

V-72329

Rule IDs

SV-86953r1_rule

The "Run as different user" selection from context menus allows the use of credentials other than the currently logged on user. Using privileged credentials in a standard user session can expose those credentials to theft. Removing this option from context menus helps prevent this from occurring.

Checks: C-72563r2_chk

If the following registry values do not exist or are not configured as specified, this is a finding. The policy configures the same Value Name, Type and Value under four different registry paths. Registry Hive: HKEY_LOCAL_MACHINE Registry Paths: \SOFTWARE\Classes\batfile\shell\runasuser\ \SOFTWARE\Classes\cmdfile\shell\runasuser\ \SOFTWARE\Classes\exefile\shell\runasuser\ \SOFTWARE\Classes\mscfile\shell\runasuser\ Value Name: SuppressionPolicy Type: REG_DWORD Value: 0x00001000 (4096)

Fix: F-78683r2_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MS Security Guide >> "Remove "Run as Different User" from context menus" to "Enabled". This policy setting requires the installation of the SecGuide custom templates included with the STIG package. "SecGuide.admx" and "SecGuide.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

b

Bluetooth must be turned off unless approved by the organization.

CM-7 - Medium - CCI-000381 - V-72765 - SV-87403r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-00-000210

Vuln IDs

V-72765

Rule IDs

SV-87403r1_rule

If not configured properly, Bluetooth may allow rogue devices to communicate with a system. If a rogue device is paired with a system, there is potential for sensitive information to be compromised.

Checks: C-72913r1_chk

This is NA if the system does not have Bluetooth. Verify the Bluetooth radio is turned off unless approved by the organization. If it is not, this is a finding. Approval must be documented with the ISSO.

Fix: F-79175r1_fix

Turn off Bluetooth radios not organizationally approved. Establish an organizational policy for the use of Bluetooth.

b

Bluetooth must be turned off when not in use.

CM-7 - Medium - CCI-000381 - V-72767 - SV-87405r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-00-000220

Vuln IDs

V-72767

Rule IDs

SV-87405r1_rule

If not configured properly, Bluetooth may allow rogue devices to communicate with a system. If a rogue device is paired with a system, there is potential for sensitive information to be compromised.

Checks: C-72915r1_chk

This is NA if the system does not have Bluetooth. Verify the organization has a policy to turn off Bluetooth when not in use and personnel are trained. If it does not, this is a finding.

Fix: F-79177r1_fix

Turn off Bluetooth radios when not in use. Establish an organizational policy for the use of Bluetooth to include training of personnel.

b

The system must notify the user when a Bluetooth device attempts to connect.

CM-6 - Medium - CCI-000366 - V-72769 - SV-87407r2_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-00-000230

Vuln IDs

V-72769

Rule IDs

SV-87407r2_rule

If not configured properly, Bluetooth may allow rogue devices to communicate with a system. If a rogue device is paired with a system, there is potential for sensitive information to be compromised

Checks: C-72917r4_chk

This is NA if the system does not have Bluetooth, or if Bluetooth is turned off per the organizations policy. Search for "Bluetooth". View Bluetooth Settings. Select "More Bluetooth Options" If "Alert me when a new Bluetooth device wants to connect" is not checked, this is a finding.

Fix: F-79179r1_fix

Configure Bluetooth to notify users if devices attempt to connect. View Bluetooth Settings. Ensure "Alert me when a new Bluetooth device wants to connect" is checked.

b

Windows 10 must be configured to audit Object Access - Other Object Access Events failures.

AU-12 - Medium - CCI-000172 - V-74409 - SV-89083r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000084

Vuln IDs

V-74409

Rule IDs

SV-89083r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Auditing for other object access records events related to the management of task scheduler jobs and COM+ objects.

Checks: C-74295r6_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open PowerShell or a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*" Compare the AuditPol settings with the following: Object Access >> Other Object Access Events - Failure If the system does not audit the above, this is a finding.

Fix: F-80951r4_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Object Access >> "Audit Other Object Access Events" with "Failure" selected.

b

Windows 10 must be configured to audit Object Access - Other Object Access Events successes.

AU-12 - Medium - CCI-000172 - V-74411 - SV-89085r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000083

Vuln IDs

V-74411

Rule IDs

SV-89085r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Auditing for other object access records events related to the management of task scheduler jobs and COM+ objects.

Checks: C-74297r4_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open PowerShell or a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*" Compare the AuditPol settings with the following: Object Access >> Other Object Access Events - Success If the system does not audit the above, this is a finding.

Fix: F-80953r2_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Object Access >> "Audit Other Object Access Events" with "Success" selected.

b

Windows 10 must be configured to prioritize ECC Curves with longer key lengths first.

IA-7 - Medium - CCI-000803 - V-74413 - SV-89087r2_rule

RMF Control

IA-7

Severity

M

CCI

CCI-000803

Version

WN10-CC-000052

Vuln IDs

V-74413

Rule IDs

SV-89087r2_rule

Use of weak or untested encryption algorithms undermines the purposes of utilizing encryption to protect data. By default Windows uses ECC curves with shorter key lengths first. Requiring ECC curves with longer key lengths to be prioritized first helps ensure more secure algorithms are used.

Checks: C-94089r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Cryptography\Configuration\SSL\00010002\ Value Name: EccCurves Value Type: REG_MULTI_SZ Value: NistP384 NistP256

Fix: F-80955r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Network >> SSL Configuration Settings >> "ECC Curve Order" to "Enabled" with "ECC Curve Order:" including the following in the order listed: NistP384 NistP256

b

Windows 10 must be configured to disable Windows Game Recording and Broadcasting.

CM-7 - Medium - CCI-000381 - V-74417 - SV-89091r2_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-CC-000252

Vuln IDs

V-74417

Rule IDs

SV-89091r2_rule

Windows Game Recording and Broadcasting is intended for use with games, however it could potentially record screen shots of other applications and expose sensitive data. Disabling the feature will prevent this from occurring.

Checks: C-91423r1_chk

This is NA for Windows 10 LTSC\B versions 1507 and 1607. If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\GameDVR\ Value Name: AllowGameDVR Type: REG_DWORD Value: 0x00000000 (0)

Fix: F-80959r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Game Recording and Broadcasting >> "Enables or disables Windows Game Recording and Broadcasting" to "Disabled".

b

Windows 10 must be configured to enable Remote host allows delegation of non-exportable credentials.

CM-6 - Medium - CCI-000366 - V-74699 - SV-89373r2_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000068

Vuln IDs

V-74699

Rule IDs

SV-89373r2_rule

An exportable version of credentials is provided to remote hosts when using credential delegation which exposes them to theft on the remote host. Restricted Admin mode or Remote Credential Guard allow delegation of non-exportable credentials providing additional protection of the credentials. Enabling this configures the host to support Restricted Admin mode or Remote Credential Guard.

Checks: C-91425r1_chk

This is NA for Windows 10 LTSC\B versions 1507 and 1607. If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\CredentialsDelegation\ Value Name: AllowProtectedCreds Type: REG_DWORD Value: 0x00000001 (1)

Fix: F-81317r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Credentials Delegation >> "Remote host allows delegation of non-exportable credentials" to "Enabled".

b

The Secondary Logon service must be disabled on Windows 10.

CM-7 - Medium - CCI-000381 - V-74719 - SV-89393r2_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-00-000175

Vuln IDs

V-74719

Rule IDs

SV-89393r2_rule

The Secondary Logon service provides a means for entering alternate credentials, typically used to run commands with elevated privileges. Using privileged credentials in a standard user session can expose those credentials to theft.

Checks: C-94093r1_chk

Run "Services.msc". Locate the "Secondary Logon" service. If the "Startup Type" is not "Disabled" or the "Status" is "Running", this is a finding.

Fix: F-81333r1_fix

Configure the "Secondary Logon" service "Startup Type" to "Disabled".

b

Windows 10 must be configured to audit Object Access - File Share successes.

AU-12 - Medium - CCI-000172 - V-74721 - SV-89395r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000082

Vuln IDs

V-74721

Rule IDs

SV-89395r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Auditing file shares records events related to connection to shares on a system including system shares such as C$.

Checks: C-74575r5_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open PowerShell or a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*" Compare the AuditPol settings with the following: Object Access >> File Share - Success If the system does not audit the above, this is a finding.

Fix: F-81335r3_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Object Access >> "Audit File Share" with "Success" selected.

b

The Server Message Block (SMB) v1 protocol must be disabled on the SMB server.

CM-7 - Medium - CCI-000381 - V-74723 - SV-89397r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-00-000165

Vuln IDs

V-74723

Rule IDs

SV-89397r1_rule

SMBv1 is a legacy protocol that uses the MD5 algorithm as part of SMB. MD5 is known to be vulnerable to a number of attacks such as collision and preimage attacks as well as not being FIPS compliant. Disabling SMBv1 support may prevent access to file or print sharing resources with systems or devices that only support SMBv1. File shares and print services hosted on Windows Server 2003 are an example, however Windows Server 2003 is no longer a supported operating system. Some older network attached devices may only support SMBv1.

Checks: C-74577r1_chk

Different methods are available to disable SMBv1 on Windows 10, if V-70639 is configured, this is NA. If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters\ Value Name: SMB1 Type: REG_DWORD Value: 0x00000000 (0)

Fix: F-81337r2_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MS Security Guide >> "Configure SMBv1 Server" to "Disabled". This policy setting requires the installation of the SecGuide custom templates included with the STIG package. "SecGuide.admx" and "SecGuide.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively. The system must be restarted for the change to take effect.

b

The Server Message Block (SMB) v1 protocol must be disabled on the SMB client.

CM-7 - Medium - CCI-000381 - V-74725 - SV-89399r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-00-000170

Vuln IDs

V-74725

Rule IDs

SV-89399r1_rule

SMBv1 is a legacy protocol that uses the MD5 algorithm as part of SMB. MD5 is known to be vulnerable to a number of attacks such as collision and preimage attacks as well as not being FIPS compliant. Disabling SMBv1 support may prevent access to file or print sharing resources with systems or devices that only support SMBv1. File shares and print services hosted on Windows Server 2003 are an example, however Windows Server 2003 is no longer a supported operating system. Some older network attached devices may only support SMBv1.

Checks: C-74579r3_chk

Different methods are available to disable SMBv1 on Windows 10, if V-70639 is configured, this is NA. If the following registry value is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Services\mrxsmb10\ Value Name: Start Type: REG_DWORD Value: 0x00000004 (4)

Fix: F-81339r3_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MS Security Guide >> "Configure SMBv1 client driver" to "Enabled" with "Disable driver (recommended)" selected for "Configure MrxSmb10 driver". This policy setting requires the installation of the SecGuide custom templates included with the STIG package. "SecGuide.admx" and "SecGuide.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively. The system must be restarted for the changes to take effect.

b

Windows 10 must be configured to audit Object Access - File Share failures.

AU-12 - Medium - CCI-000172 - V-75027 - SV-89701r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000081

Vuln IDs

V-75027

Rule IDs

SV-89701r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Auditing file shares records events related to connection to shares on a system including system shares such as C$.

Checks: C-74879r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open PowerShell or a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*" Compare the AuditPol settings with the following: Object Access >> File Share - Failure If the system does not audit the above, this is a finding.

Fix: F-81643r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Object Access >> "Audit File Share" with "Failure" selected.

b

Orphaned security identifiers (SIDs) must be removed from user rights on Windows 10.

CM-6 - Medium - CCI-000366 - V-76505 - SV-91201r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-00-000190

Vuln IDs

V-76505

Rule IDs

SV-91201r1_rule

Accounts or groups given rights on a system may show up as unresolved SIDs for various reasons including deletion of the accounts or groups. If the account or group objects are reanimated, there is a potential they may still have rights no longer intended. Valid domain accounts or groups may also show up as unresolved SIDs if a connection to the domain cannot be established for some reason.

Checks: C-76171r1_chk

Review the effective User Rights setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. Review each User Right listed for any unresolved SIDs to determine whether they are valid, such as due to being temporarily disconnected from the domain. (Unresolved SIDs have the format of "*S-1-…".) If any unresolved SIDs exist and are not for currently valid accounts or groups, this is a finding.

Fix: F-83185r1_fix

Remove any unresolved SIDs found in User Rights assignments and determined to not be for currently valid accounts or groups by removing the accounts or groups from the appropriate group policy.

b

Windows 10 systems must have Unified Extensible Firmware Interface (UEFI) firmware and be configured to run in UEFI mode, not Legacy BIOS.

CM-6 - Medium - CCI-000366 - V-77083 - SV-91779r3_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-00-000015

Vuln IDs

V-77083

Rule IDs

SV-91779r3_rule

UEFI provides additional security features in comparison to legacy BIOS firmware, including Secure Boot. UEFI is required to support additional security features in Windows 10, including Virtualization Based Security and Credential Guard. Systems with UEFI that are operating in Legacy BIOS mode will not support these security features.

Checks: C-86429r1_chk

For virtual desktop implementations (VDIs) where the virtual desktop instance is deleted or refreshed upon logoff, this is NA. Verify the system firmware is configured to run in UEFI mode, not Legacy BIOS. Run "System Information". Under "System Summary", if "BIOS Mode" does not display "UEFI", this is finding.

Fix: F-83781r1_fix

Configure UEFI firmware to run in UEFI mode, not Legacy BIOS mode.

a

Secure Boot must be enabled on Windows 10 systems.

CM-6 - Low - CCI-000366 - V-77085 - SV-91781r2_rule

RMF Control

CM-6

Severity

L

CCI

Version

WN10-00-000020

Vuln IDs

V-77085

Rule IDs

SV-91781r2_rule

Secure Boot is a standard that ensures systems boot only to a trusted operating system. Secure Boot is required to support additional security features in Windows 10, including Virtualization Based Security and Credential Guard. If Secure Boot is turned off, these security features will not function.

Checks: C-86431r1_chk

Some older systems may not have UEFI firmware. This is currently a CAT III; it will be raised in severity at a future date when broad support of Windows 10 hardware and firmware requirements are expected to be met. Devices that have UEFI firmware must have Secure Boot enabled. For virtual desktop implementations (VDIs) where the virtual desktop instance is deleted or refreshed upon logoff, this is NA. Run "System Information". Under "System Summary", if "Secure Boot State" does not display "On", this is finding.

Fix: F-83783r1_fix

Enable Secure Boot in the system firmware.

b

Windows 10 Exploit Protection system-level mitigation, Data Execution Prevention (DEP), must be on.

CM-6 - Medium - CCI-000366 - V-77091 - SV-91787r3_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000020

Vuln IDs

V-77091

Rule IDs

SV-91787r3_rule

Exploit protection in Windows 10 enables mitigations against potential threats at the system and application level. Several mitigations, including "Data Execution Prevention (DEP)", are enabled by default at the system level. DEP prevents code from being run from data-only memory pages. If this is turned off, Windows 10 may be subject to various exploits.

Checks: C-79579r1_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. The default configuration in Exploit Protection is "On by default" which meets this requirement. The PowerShell query results for this show as "NOTSET". Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -System". If the status of "DEP: Enable" is "OFF", this is a finding. Values that would not be a finding include: ON NOTSET (Default configuration)

Fix: F-86717r3_fix

Ensure Exploit Protection system-level mitigation, "Data Execution Prevention (DEP)", is turned on. The default configuration in Exploit Protection is "On by default" which meets this requirement. Open "Windows Defender Security Center". Select "App & browser control". Select "Exploit protection settings". Under "System settings", configure "Data Execution Prevention (DEP)" to "On by default" or "Use default (<On>)". The STIG package includes a DoD EP XML file in the "Supporting Files" folder for configuring application mitigations defined in the STIG. This can also be modified to explicitly enforce the system level requirements. Adding the following to the XML file will explicitly turn DEP on (other system level EP requirements can be combined under <SystemConfig>): <SystemConfig> <DEP Enable="true"></DEP> </SystemConfig> The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Windows 10 Exploit Protection system-level mitigation, Randomize memory allocations (Bottom-Up ASLR), must be on.

SI-16 - Medium - CCI-002824 - V-77095 - SV-91791r4_rule

RMF Control

SI-16

Severity

M

CCI

Version

WN10-EP-000030

Vuln IDs

V-77095

Rule IDs

SV-91791r4_rule

Exploit protection in Windows 10 enables mitigations against potential threats at the system and application level. Several mitigations, including "Randomize memory allocations (Bottom-Up ASLR)", are enabled by default at the system level. Bottom-Up ASLR (address space layout randomization) randomizes locations for virtual memory allocations, including those for system structures. If this is turned off, Windows 10 may be subject to various exploits.

Checks: C-79581r1_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. The default configuration in Exploit Protection is "On by default" which meets this requirement. The PowerShell query results for this show as "NOTSET". Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -System". If the status of "ASLR: BottomUp" is "OFF", this is a finding. Values that would not be a finding include: ON NOTSET (Default configuration)

Fix: F-86719r3_fix

Ensure Exploit Protection system-level mitigation, "Randomize memory allocations (Bottom-Up ASLR)" is turned on. The default configuration in Exploit Protection is "On by default" which meets this requirement. Open "Windows Defender Security Center". Select "App & browser control". Select "Exploit protection settings". Under "System settings", configure "Randomize memory allocations (Bottom-Up ASLR)" to "On by default" or "Use default (<On>)". The STIG package includes a DoD EP XML file in the "Supporting Files" folder for configuring application mitigations defined in the STIG. This can also be modified to explicitly enforce the system level requirements. Adding the following to the XML file will explicitly turn Bottom-Up ASLR on (other system level EP requirements can be combined under <SystemConfig>): <SystemConfig> <ASLR BottomUp="true"</ASLR> </SystemConfig> The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Windows 10 Exploit Protection system-level mitigation, Control flow guard (CFG), must be on.

CM-6 - Medium - CCI-000366 - V-77097 - SV-91793r3_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000040

Vuln IDs

V-77097

Rule IDs

SV-91793r3_rule

Exploit protection in Windows 10 enables mitigations against potential threats at the system and application level. Several mitigations, including "Control flow guard (CFG)", are enabled by default at the system level. CFG ensures flow integrity for indirect calls. If this is turned off, Windows 10 may be subject to various exploits.

Checks: C-79583r1_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. The default configuration in Exploit Protection is "On by default" which meets this requirement. The PowerShell query results for this show as "NOTSET". Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -System". If the status of "CFG: Enable" is "OFF", this is a finding. Values that would not be a finding include: ON NOTSET (Default configuration)

Fix: F-86721r2_fix

Ensure Exploit Protection system-level mitigation, "Control flow guard (CFG)", is turned on. The default configuration in Exploit Protection is "On by default" which meets this requirement. Open "Windows Defender Security Center". Select "App & browser control". Select "Exploit protection settings". Under "System settings", configure "Control flow guard (CFG)" to "On by default" or "Use default (<On>)". The STIG package includes a DoD EP XML file in the "Supporting Files" folder for configuring application mitigations defined in the STIG. This can also be modified to explicitly enforce the system level requirements. Adding the following to the XML file will explicitly turn CFG on (other system level EP requirements can be combined under <SystemConfig>): <SystemConfig> <ControlFlowGuard Enable="true"></ControlFlowGuard> </SystemConfig> The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Windows 10 Exploit Protection system-level mitigation, Validate exception chains (SEHOP), must be on.

CM-6 - Medium - CCI-000366 - V-77101 - SV-91797r3_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000050

Vuln IDs

V-77101

Rule IDs

SV-91797r3_rule

Exploit protection in Windows 10 enables mitigations against potential threats at the system and application level. Several mitigations, including "Validate exception chains (SEHOP)", are enabled by default at the system level. SEHOP (structured exception handling overwrite protection) ensures the integrity of an exception chain during exception dispatch. If this is turned off, Windows 10 may be subject to various exploits.

Checks: C-79585r1_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. The default configuration in Exploit Protection is "On by default" which meets this requirement. The PowerShell query results for this show as "NOTSET". Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -System". If the status of "SEHOP: Enable" is "OFF", this is a finding. Values that would not be a finding include: ON NOTSET (Default configuration)

Fix: F-86723r2_fix

Ensure Exploit Protection system-level mitigation, "Validate exception chains (SEHOP)", is turned on. The default configuration in Exploit Protection is "On by default" which meets this requirement. Open "Windows Defender Security Center". Select "App & browser control". Select "Exploit protection settings". Under "System settings", configure "Validate exception chains (SEHOP)" to "On by default" or "Use default (<On>)". The STIG package includes a DoD EP XML file in the "Supporting Files" folder for configuring application mitigations defined in the STIG. This can also be modified to explicitly enforce the system level requirements. Adding the following to the XML file will explicitly turn SEHOP on (other system level EP requirements can be combined under <SystemConfig>): <SystemConfig> <SEHOP Enable="true"></SEHOP> </SystemConfig> The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Windows 10 Exploit Protection system-level mitigation, Validate heap integrity, must be on.

CM-6 - Medium - CCI-000366 - V-77103 - SV-91799r3_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000060

Vuln IDs

V-77103

Rule IDs

SV-91799r3_rule

Exploit protection in Windows 10 enables mitigations against potential threats at the system and application level. Several mitigations, including "Validate heap integrity", are enabled by default at the system level. "Validate heap integrity" terminates a process when heap corruption is detected. If this is turned off, Windows 10 may be subject to various exploits.

Checks: C-79587r1_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. The default configuration in Exploit Protection is "On by default" which meets this requirement. The PowerShell query results for this show as "NOTSET". Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -System". If the status of "Heap: TerminateOnError" is "OFF", this is a finding. Values that would not be a finding include: ON NOTSET (Default configuration)

Fix: F-86725r2_fix

Ensure Exploit Protection system-level mitigation, "Validate heap integrity" is turned on. The default configuration in Exploit Protection is "On by default" which meets this requirement. Open "Windows Defender Security Center". Select "App & browser control". Select "Exploit protection settings". Under "System settings", configure "Validate heap integrity" to "On by default" or "Use default (<On>)". The STIG package includes a DoD EP XML file in the "Supporting Files" folder for configuring application mitigations defined in the STIG. This can also be modified to explicitly enforce the system level requirements. Adding the following to the XML file will explicitly turn Validate heap integrity on (other system level EP requirements can be combined under <SystemConfig>): <SystemConfig> <Heap TerminateOnError="true"></Heap> </SystemConfig> The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for Acrobat.exe.

CM-6 - Medium - CCI-000366 - V-77189 - SV-91885r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000070

Vuln IDs

V-77189

Rule IDs

SV-91885r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94095r4_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name Acrobat.exe". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False The PowerShell command produces a list of mitigations; only those with a required status of are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84325r6_fix

Ensure the following mitigations are configured as shown for Acrobat.exe: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for AcroRd32.exe.

CM-6 - Medium - CCI-000366 - V-77191 - SV-91887r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000080

Vuln IDs

V-77191

Rule IDs

SV-91887r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94097r2_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name AcroRd32.exe". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot= False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False The PowerShell command produces a list of mitigations; only those with a required status are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84329r5_fix

Ensure the following mitigations are configured as shown for AcroRd32.exe: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot= False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for chrome.exe.

CM-6 - Medium - CCI-000366 - V-77195 - SV-91891r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000090

Vuln IDs

V-77195

Rule IDs

SV-91891r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94099r2_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name chrome.exe". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding: DEP: OverrideDEP: False The PowerShell command produces a list of mitigations; only those with a required status are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84333r5_fix

Ensure the following mitigations are configured as shown forchrome.exe: DEP: OverrideDEP: False Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for EXCEL.EXE.

CM-6 - Medium - CCI-000366 - V-77201 - SV-91897r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000100

Vuln IDs

V-77201

Rule IDs

SV-91897r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94101r2_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name EXCEL.EXE". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False The PowerShell command produces a list of mitigations; only those with a required status are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84337r5_fix

Ensure the following mitigations are configured as shown for EXCEL.EXE: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for firefox.exe.

CM-6 - Medium - CCI-000366 - V-77205 - SV-91901r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000110

Vuln IDs

V-77205

Rule IDs

SV-91901r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-79777r3_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name firefox.exe". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding: DEP: Override DEP: False ASLR: ForceRelocateImages: True The PowerShell command produces a list of mitigations; only those with a required status are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-86915r2_fix

Ensure the following mitigations are configured as shown firefox.exe: DEP: Override DEP: False ASLR: BottomUp: ON ForceRelocateImages: True Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for FLTLDR.EXE.

CM-6 - Medium - CCI-000366 - V-77209 - SV-91905r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000120

Vuln IDs

V-77209

Rule IDs

SV-91905r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94103r2_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name FLTLDR.EXE". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding: DEP: Override DEP: False ImageLoad: ImageLoad OverrideBlockRemoteImages: False Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Child Process: OverrideChildProcess: False The PowerShell command produces a list of mitigations; only those with a required status are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84341r5_fix

Ensure the following mitigations are configured as shown for FLTLDR.EXE: DEP: Override DEP: False ImageLoad: ImageLoad OverrideBlockRemoteImages: False Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Child Process: OverrideChildProcess: False Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for GROOVE.EXE.

CM-6 - Medium - CCI-000366 - V-77213 - SV-91909r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000130

Vuln IDs

V-77213

Rule IDs

SV-91909r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94105r2_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name GROOVE.EXE". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding: DEP: OverrideDEP: False ASLR: ForceRelocateImages: True ImageLoad: OverrideBlockRemoteImages: False Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Child Process: OverrideChildProcess: False The PowerShell command produces a list of mitigations; only those with a required status are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84343r5_fix

Ensure the following mitigations are configured as shown GROOVE.EXE: DEP: OverrideDEP: False ASLR: OverrideBlockRemoteImages: False ImageLoad: ForceRelocateImages: True Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Child Process: OverrideChildProcess: False Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for iexplore.exe.

CM-6 - Medium - CCI-000366 - V-77217 - SV-91913r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000140

Vuln IDs

V-77217

Rule IDs

SV-91913r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94107r2_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name iexplore.exe". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False The PowerShell command produces a list of mitigations; only those with a required status are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84347r5_fix

Ensure the following mitigations are configured as shown for iexplore.exe: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for INFOPATH.EXE.

CM-6 - Medium - CCI-000366 - V-77221 - SV-91917r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000150

Vuln IDs

V-77221

Rule IDs

SV-91917r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94109r2_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name INFOPATH.EXE". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False The PowerShell command produces a list of mitigations; only those with a required status are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84349r5_fix

Ensure the following mitigations are configured as shown for INFOPATH.EXE: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for java.exe, javaw.exe, and javaws.exe.

CM-6 - Medium - CCI-000366 - V-77223 - SV-91919r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000160

Vuln IDs

V-77223

Rule IDs

SV-91919r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94111r2_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name [application name]" with each of the following substituted for [application name]: java.exe, javaw.exe, and javaws.exe (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding: DEP: OverrideDEP: False Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False The PowerShell command produces a list of mitigations; only those with a required status are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84353r4_fix

Ensure the following mitigations are configured for java.exe, javaw.exe, and javaws.exe: DEP: OverrideDEP: False Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for lync.exe.

CM-6 - Medium - CCI-000366 - V-77227 - SV-91923r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000170

Vuln IDs

V-77227

Rule IDs

SV-91923r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94113r2_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name lync.exe". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False The PowerShell command produces a list of mitigations; only those with a required status are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84357r6_fix

Ensure the following mitigations are configured as shown for lync.exe: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for MSACCESS.EXE.

CM-6 - Medium - CCI-000366 - V-77231 - SV-91927r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000180

Vuln IDs

V-77231

Rule IDs

SV-91927r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94115r2_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name MSACCESS.EXE". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False The PowerShell command produces a list of mitigations; only those with a required status of are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84359r5_fix

Ensure the following mitigations are configured as shown for MSACCESS.EXE: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for MSPUB.EXE.

CM-6 - Medium - CCI-000366 - V-77233 - SV-91929r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000190

Vuln IDs

V-77233

Rule IDs

SV-91929r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94117r3_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name MSPUB.EXE". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False The PowerShell command produces a list of mitigations; only those with a required status are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84361r5_fix

Ensure the following mitigations are configured as shown for MSPUB.EXE: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for OneDrive.exe.

CM-6 - Medium - CCI-000366 - V-77235 - SV-91931r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000210

Vuln IDs

V-77235

Rule IDs

SV-91931r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94119r2_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name OneDrive.exe". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding: DEP: Override DEP: False ASLR: OverrideRelocateImages: False ImageLoad: OverrideBlockRemoteImages: False Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False The PowerShell command produces a list of mitigations; only those with a required status are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84321r6_fix

Ensure the following mitigations are configured for OneDrive.exe: DEP: Override DEP: False ASLR: OverrideRelocateImages: False ImageLoad: OverrideBlockRemoteImages: False Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for OIS.EXE.

CM-6 - Medium - CCI-000366 - V-77239 - SV-91935r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000200

Vuln IDs

V-77239

Rule IDs

SV-91935r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94121r2_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name OIS.EXE". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding: DEP: OverrideDEP: False Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False The PowerShell command produces a list of mitigations; only those with a required status are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84315r5_fix

Ensure the following mitigations are configured as shown for OIS.EXE: DEP: OverrideDEP: False Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for OUTLOOK.EXE.

CM-6 - Medium - CCI-000366 - V-77243 - SV-91939r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000220

Vuln IDs

V-77243

Rule IDs

SV-91939r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94123r2_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name OUTLOOK.EXE". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False The PowerShell command produces a list of mitigations; only those with a required status are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84363r5_fix

Ensure the following mitigations are configured as shown for OUTLOOK.EXE: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for plugin-container.exe.

CM-6 - Medium - CCI-000366 - V-77245 - SV-91941r3_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000230

Vuln IDs

V-77245

Rule IDs

SV-91941r3_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94125r1_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name plugin-container.exe". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have a status of "ON", this is a finding: DEP: Enable: ON Payload: EnableExportAddressFilter: ON EnableExportAddressFilterPlus: ON EnableImportAddressFilter: ON EnableRopStackPivot: ON EnableRopCallerCheck: ON EnableRopSimExec: ON The PowerShell command produces a list of mitigations; only those with a required status of "ON" are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84365r4_fix

Ensure the following mitigations are turned "ON" for plugin-container.exe: DEP: Enable: ON Payload: EnableExportAddressFilter: ON EnableExportAddressFilterPlus: ON EnableImportAddressFilter: ON EnableRopStackPivot: ON EnableRopCallerCheck: ON EnableRopSimExec: ON Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for POWERPNT.EXE.

CM-6 - Medium - CCI-000366 - V-77247 - SV-91943r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000240

Vuln IDs

V-77247

Rule IDs

SV-91943r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94127r2_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name POWERPNT.EXE". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False The PowerShell command produces a list of mitigations; only those with a required status are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84503r6_fix

Ensure the following mitigations are configured as shown for POWERPNT.EXE: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for PPTVIEW.EXE.

CM-6 - Medium - CCI-000366 - V-77249 - SV-91945r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000250

Vuln IDs

V-77249

Rule IDs

SV-91945r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94129r2_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name PPTVIEW.EXE". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False The PowerShell command produces a list of mitigations; only those with a required status are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84505r5_fix

Ensure the following mitigations are configured as shown for PPTVIEW.EXE: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for VISIO.EXE.

CM-6 - Medium - CCI-000366 - V-77255 - SV-91951r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000260

Vuln IDs

V-77255

Rule IDs

SV-91951r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94131r2_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name VISIO.EXE". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False The PowerShell command produces a list of mitigations; only those with a required status are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84507r6_fix

Ensure the following mitigations are configured as shown for VISIO.EXE: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for VPREVIEW.EXE.

CM-6 - Medium - CCI-000366 - V-77259 - SV-91955r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000270

Vuln IDs

V-77259

Rule IDs

SV-91955r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94133r2_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name VPREVIEW.EXE". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False The PowerShell command produces a list of mitigations; only those with a required status are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84509r5_fix

Ensure the following mitigations are configured as shown for VPREVIEW.EXE: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for WINWORD.EXE.

CM-6 - Medium - CCI-000366 - V-77263 - SV-91959r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000280

Vuln IDs

V-77263

Rule IDs

SV-91959r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94135r2_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name WINWORD.EXE". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False The PowerShell command produces a list of mitigations; only those with a required status of are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84511r5_fix

Ensure the following mitigations are configured as shown for WINWORD.EXE: DEP: OverrideDEP: False ASLR: ForceRelocateImages: ON Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for wmplayer.exe.

CM-6 - Medium - CCI-000366 - V-77267 - SV-91963r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000290

Vuln IDs

V-77267

Rule IDs

SV-91963r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94137r2_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name wmplayer.exe". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding: DEP: OverrideDEP: False Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False The PowerShell command produces a list of mitigations; only those with a required status are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84513r5_fix

Ensure the following mitigations are configured as shown for wmplayer.exe: DEP: OverrideDEP: False Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

b

Exploit Protection mitigations in Windows 10 must be configured for wordpad.exe.

CM-6 - Medium - CCI-000366 - V-77269 - SV-91965r4_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-EP-000300

Vuln IDs

V-77269

Rule IDs

SV-91965r4_rule

Exploit protection in Windows 10 provides a means of enabling additional mitigations against potential threats at the system and application level. Without these additional application protections, Windows 10 may be subject to various exploits.

Checks: C-94139r2_chk

This is NA prior to v1709 of Windows 10. This is applicable to unclassified systems, for other systems this is NA. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -Name wordpad.exe". (Get-ProcessMitigation can be run without the -Name parameter to get a list of all application mitigations configured.) If the following mitigations do not have the listed status which is shown below, this is a finding: DEP: OverrideDEP: False Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False The PowerShell command produces a list of mitigations; only those with a required status are listed here. If the PowerShell command does not produce results, ensure the letter case of the filename within the command syntax matches the letter case of the actual filename on the system.

Fix: F-84515r5_fix

Ensure the following mitigations are configured as shown for wordpad.exe: DEP: OverrideDEP: False Payload: OverrideEnableExportAddressFilter: False OverrideEnableExportAddressFilterPlus: False OverrideEnableImportAddressFilter: False OverrideEnableRopStackPivot: False OverrideEnableRopCallerCheck: False OverrideEnableRopSimExec: False Application mitigations defined in the STIG are configured by a DoD EP XML file included with the Windows 10 STIG package in the "Supporting Files" folder. The XML file is applied with the group policy setting Computer Configuration >> Administrative Settings >> Windows Components >> Windows Defender Exploit Guard >> Exploit Protection >> "Use a common set of exploit protection settings" configured to "Enabled" with file name and location defined under "Options:". It is recommended the file be in a read-only network location.

c

Administrative accounts must not be used with applications that access the Internet, such as web browsers, or with potential Internet sources, such as email.

CM-6 - High - CCI-000366 - V-78129 - SV-92835r1_rule

RMF Control

CM-6

Severity

H

CCI

Version

WN10-00-000240

Vuln IDs

V-78129

Rule IDs

SV-92835r1_rule

Using applications that access the Internet or have potential Internet sources using administrative privileges exposes a system to compromise. If a flaw in an application is exploited while running as a privileged user, the entire system could be compromised. Web browsers and email are common attack vectors for introducing malicious code and must not be run with an administrative account. Since administrative accounts may generally change or work around technical restrictions for running a web browser or other applications, it is essential that policy requires administrative accounts to not access the Internet or use applications, such as email. The policy should define specific exceptions for local service administration. These exceptions may include HTTP(S)-based tools that are used for the administration of the local system, services, or attached devices. Technical means such as application whitelisting can be used to enforce the policy to ensure compliance.

Checks: C-77703r1_chk

Determine whether administrative accounts are prevented from using applications that access the Internet, such as web browsers, or with potential Internet sources, such as email, except as necessary for local service administration. The organization must have a policy that prohibits administrative accounts from using applications that access the Internet, such as web browsers, or with potential Internet sources, such as email, except as necessary for local service administration. The policy should define specific exceptions for local service administration. These exceptions may include HTTP(S)-based tools that are used for the administration of the local system, services, or attached devices. Technical measures such as the removal of applications or application whitelisting must be used where feasible to prevent the use of applications that access the Internet. If accounts with administrative privileges are not prevented from using applications that access the Internet or with potential Internet sources, this is a finding.

Fix: F-84851r1_fix

Establish and enforce a policy that prohibits administrative accounts from using applications that access the Internet, such as web browsers, or with potential Internet sources, such as email. Define specific exceptions for local service administration. These exceptions may include HTTP(S)-based tools that are used for the administration of the local system, services, or attached devices. Implement technical measures where feasible such as removal of applications or use of application whitelisting to restrict the use of applications that can access the Internet.

b

The use of personal accounts for OneDrive synchronization must be disabled.

CM-7 - Medium - CCI-000381 - V-82137 - SV-96851r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-UC-000005

Vuln IDs

V-82137

Rule IDs

SV-96851r1_rule

OneDrive provides access to external services for data storage, which must be restricted to authorized instances. Enabling this setting will prevent the use of personal OneDrive accounts for synchronization.

Checks: C-81935r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_CURRENT_USER Registry Path: \Software\Policies\Microsoft\OneDrive\ Value Name: DisablePersonalSync Value Type: REG_DWORD Value: 0x00000001 (1)

Fix: F-88989r2_fix

Configure the policy value for User Configuration >> Administrative Templates >> OneDrive >> "Prevent users from synchronizing personal OneDrive accounts" to "Enabled". Group policy files for OneDrive are located on a system with OneDrive in "%localappdata%\Microsoft\OneDrive\BuildNumber\adm\". Copy the OneDrive.admx and .adml files to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

b

Windows 10 must be configured to prevent certificate error overrides in Microsoft Edge.

CM-6 - Medium - CCI-000366 - V-82139 - SV-96853r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000238

Vuln IDs

V-82139

Rule IDs

SV-96853r1_rule

Web security certificates provide an indication whether a site is legitimate. This policy setting prevents the user from ignoring Secure Sockets Layer/Transport Layer Security (SSL/TLS) certificate errors that interrupt browsing.

Checks: C-81939r3_chk

This setting is applicable starting with v1809 of Windows 10; it is NA for prior versions. Windows 10 LTSC\B versions do not include Microsoft Edge; this is NA for those systems. If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\MicrosoftEdge\Internet Settings\ Value Name: PreventCertErrorOverrides Type: REG_DWORD Value: 0x00000001 (1)

Fix: F-88993r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Edge >> "Prevent certificate error overrides" to "Enabled".

b

If Enhanced diagnostic data is enabled it must be limited to the minimum required to support Windows Analytics.

CM-6 - Medium - CCI-000366 - V-82145 - SV-96859r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000204

Vuln IDs

V-82145

Rule IDs

SV-96859r1_rule

Some features may communicate with the vendor, sending system information or downloading data or components for the feature. Limiting this capability will prevent potentially sensitive information from being sent outside the enterprise. The "Enhanced" level for telemetry includes additional information beyond "Security" and "Basic" on how Windows and apps are used and advanced reliability data. Windows Analytics can use a "limited enhanced" level to provide information such as health data for devices.

Checks: C-81943r2_chk

This setting requires v1709 or later of Windows 10; it is NA for prior versions. If "Enhanced" level is enabled for telemetry, this must be configured. If "Security" or "Basic" are configured, this is NA. (See V-63683). If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\DataCollection\ Value Name: LimitEnhancedDiagnosticDataWindowsAnalytics Type: REG_DWORD Value: 0x00000001 (1)

Fix: F-88997r2_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Data Collection and Preview Builds >> "Limit Enhanced diagnostic data to the minimum required by Windows Analytics" to "Enabled" with "Enable Windows Analytics collection" selected in "Options:".

b

OneDrive must only allow synchronizing of accounts for DoD organization instances.

CM-6 - Medium - CCI-000366 - V-88203 - SV-98853r3_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000340

Vuln IDs

V-88203

Rule IDs

SV-98853r3_rule

OneDrive provides access to external services for data storage, which must be restricted to authorized instances if enabled. Configuring this setting will restrict synchronizing of OneDrive accounts to DoD organization instances.

Checks: C-87895r4_chk

If the organization is using a DoD instance of OneDrive, verify synchronizing is only allowed to the organization's DoD instance. If the organization does not have an instance of OneDrive, verify this is configured with the noted dummy entry to prevent synchronizing with other instances. If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\OneDrive\AllowTenantList\ Value Name: Organization's Tenant GUID Value Type: REG_SZ Value: Organization's Tenant GUID If the organization does not have an instance of OneDrive the Value Name and Value must be 1111-2222-3333-4444, if not this is a finding.

Fix: F-94945r4_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> OneDrive >> "Allow syncing OneDrive accounts for only specific organizations", with the Tenant GUID of the organization's DoD instance in the format 1111-2222-3333-4444. If the organization does not have an instance of OneDrive, configure the Tenant GUID with "1111-2222-3333-4444". Group policy files for OneDrive are located on a system with OneDrive in "%localappdata%\Microsoft\OneDrive\BuildNumber\adm\". Copy the OneDrive.admx and .adml files to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

b

Windows 10 must be configured to prevent Windows apps from being activated by voice while the system is locked.

AC-11 - Medium - CCI-000056 - V-94719 - SV-104549r1_rule

RMF Control

AC-11

Severity

M

CCI

CCI-000056

Version

WN10-CC-000365

Vuln IDs

V-94719

Rule IDs

SV-104549r1_rule

Allowing Windows apps to be activated by voice from the lock screen could allow for unauthorized use. Requiring logon will ensure the apps are only used by authorized personnel.

Checks: C-93909r3_chk

This setting requires v1903 or later of Windows 10; it is NA for prior versions. The setting is NA when the “Allow voice activation” policy is configured to disallow applications to be activated with voice for all users. If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\AppPrivacy\ Value Name: LetAppsActivateWithVoiceAboveLock Type: REG_DWORD Value: 0x00000002 (2) If the following registry value exists and is configured as specified, requirement is NA. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\AppPrivacy\ Value Name: LetAppsActivateWithVoice Type: REG_DWORD Value: 0x00000002 (2)

Fix: F-100837r3_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> App Privacy >> "Let Windows apps activate with voice while the system is locked" to "Enabled" with “Default for all Apps:” set to “Force Deny”. The requirement is NA if the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> App Privacy >> "Let Windows apps activate with voice" is configured to "Enabled" with “Default for all Apps:” set to “Force Deny”.

b

Windows 10 systems must use a BitLocker PIN for pre-boot authentication.

SC-28 - Medium - CCI-001199 - V-94859 - SV-104689r1_rule

RMF Control

SC-28

Severity

M

CCI

CCI-001199

Version

WN10-00-000031

Vuln IDs

V-94859

Rule IDs

SV-104689r1_rule

If data at rest is unencrypted, it is vulnerable to disclosure. Even if the operating system enforces permissions on data access, an adversary can remove non-volatile memory and read it directly, thereby circumventing operating system controls. Encrypting the data ensures that confidentiality is protected even when the operating system is not running. Pre-boot authentication prevents unauthorized users from accessing encrypted drives.

Checks: C-94055r2_chk

If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\FVE\ Value Name: UseAdvancedStartup Type: REG_DWORD Value: 0x00000001 (1) If one of the following registry values does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\FVE\ Value Name: UseTPMPIN Type: REG_DWORD Value: 0x00000001 (1) Value Name: UseTPMKeyPIN Type: REG_DWORD Value: 0x00000001 (1) BitLocker network unlock may be used in conjunction with a BitLocker PIN. See the article below regarding information about network unlock. https://docs.microsoft.com/en-us/windows/security/information-protection/bitlocker/bitlocker-how-to-enable-network-unlock

Fix: F-100983r2_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> BitLocker Drive Encryption >> Operating System Drives "Require additional authentication at startup" to "Enabled" with "Configure TPM Startup PIN:" set to "Require startup PIN with TPM" or with "Configure TPM startup key and PIN:" set to "Require startup key and PIN with TPM".

b

Windows 10 systems must use a BitLocker PIN with a minimum length of 6 digits for pre-boot authentication.

SC-28 - Medium - CCI-001199 - V-94861 - SV-104691r2_rule

RMF Control

SC-28

Severity

M

CCI

CCI-001199

Version

WN10-00-000032

Vuln IDs

V-94861

Rule IDs

SV-104691r2_rule

If data at rest is unencrypted, it is vulnerable to disclosure. Even if the operating system enforces permissions on data access, an adversary can remove non-volatile memory and read it directly, thereby circumventing operating system controls. Encrypting the data ensures that confidentiality is protected even when the operating system is not running. Pre-boot authentication prevents unauthorized users from accessing encrypted drives. Increasing the pin length requires a greater number of guesses for an attacker.

Checks: C-94057r3_chk

If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\FVE\ Value Name: MinimumPIN Type: REG_DWORD Value: 0x00000006 (6) or greater

Fix: F-100985r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> BitLocker Drive Encryption >> Operating System Drives "Configure minimum PIN length for startup" to "Enabled" with "Minimum characters:" set to "6" or greater.

b

Windows 10 must be configured to audit other Logon/Logoff Events Failures.

AU-3 - Medium - CCI-000130 - V-99541 - SV-108645r1_rule

RMF Control

AU-3

Severity

M

CCI

Version

WN10-AU-000565

Vuln IDs

V-99541

Rule IDs

SV-108645r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Other Logon/Logoff Events determines whether Windows generates audit events for other logon or logoff events. Logon events are essential to understanding user activity and detecting potential attacks.

Checks: C-98389r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Logon/Logoff >> Other Logon/Logoff Events - Failure

Fix: F-105225r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Logon/Logoff >> "Audit Other Logon/Logoff Events" with "Failure" selected.

b

Windows 10 must be configured to audit other Logon/Logoff Events Successes.

AU-3 - Medium - CCI-000130 - V-99543 - SV-108647r1_rule

RMF Control

AU-3

Severity

M

CCI

Version

WN10-AU-000560

Vuln IDs

V-99543

Rule IDs

SV-108647r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Other Logon/Logoff Events determines whether Windows generates audit events for other logon or logoff events. Logon events are essential to understanding user activity and detecting potential attacks.

Checks: C-98393r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Logon/Logoff >> Other Logon/Logoff Events - Success

Fix: F-105227r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Logon/Logoff >> "Audit Other Logon/Logoff Events" with "Success" selected.

b

Windows 10 must be configured to audit Detailed File Share Failures.

AU-3 - Medium - CCI-000130 - V-99545 - SV-108649r1_rule

RMF Control

AU-3

Severity

M

CCI

Version

WN10-AU-000570

Vuln IDs

V-99545

Rule IDs

SV-108649r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Detailed File Share allows you to audit attempts to access files and folders on a shared folder. The Detailed File Share setting logs an event every time a file or folder is accessed, whereas the File Share setting only records one event for any connection established between a client and file share. Detailed File Share audit events include detailed information about the permissions or other criteria used to grant or deny access.

Checks: C-98395r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Object Access >> Detailed File Share - Failure

Fix: F-105229r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Object Access >> “Detailed File Share" with "Failure" selected.

b

Windows 10 must be configured to audit MPSSVC Rule-Level Policy Change Successes.

AU-3 - Medium - CCI-000130 - V-99547 - SV-108651r1_rule

RMF Control

AU-3

Severity

M

CCI

Version

WN10-AU-000575

Vuln IDs

V-99547

Rule IDs

SV-108651r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit MPSSVC Rule-Level Policy Change determines whether the operating system generates audit events when changes are made to policy rules for the Microsoft Protection Service (MPSSVC.exe).

Checks: C-98397r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Policy Change >> MPSSVC Rule-Level Policy Change - Success

Fix: F-105231r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Policy Change >> “Audit MPSSVC Rule-Level Policy Change" with "Success" selected.

b

Windows 10 must be configured to audit MPSSVC Rule-Level Policy Change Failures.

AU-3 - Medium - CCI-000130 - V-99549 - SV-108653r1_rule

RMF Control

AU-3

Severity

M

CCI

Version

WN10-AU-000580

Vuln IDs

V-99549

Rule IDs

SV-108653r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit MPSSVC Rule-Level Policy Change determines whether the operating system generates audit events when changes are made to policy rules for the Microsoft Protection Service (MPSSVC.exe).

Checks: C-98399r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Policy Change >> MPSSVC Rule-Level Policy Change - Failure

Fix: F-105233r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Policy Change >> “Audit MPSSVC Rule-Level Policy Change" with "Failure" selected.

b

Windows 10 must be configured to audit Other Policy Change Events Successes.

AU-3 - Medium - CCI-000130 - V-99551 - SV-108655r1_rule

RMF Control

AU-3

Severity

M

CCI

Version

WN10-AU-000550

Vuln IDs

V-99551

Rule IDs

SV-108655r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Other Policy Change Events contains events about EFS Data Recovery Agent policy changes, changes in Windows Filtering Platform filter, status on Security policy settings updates for local Group Policy settings, Central Access Policy changes, and detailed troubleshooting events for Cryptographic Next Generation (CNG) operations.

Checks: C-98401r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Policy Change >> Other Policy Change Events - Success

Fix: F-105235r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Policy Change>> "Audit Other Policy Change Events" with "Success" selected.

b

Windows 10 must be configured to audit Other Policy Change Events Failures.

AU-3 - Medium - CCI-000130 - V-99553 - SV-108657r1_rule

RMF Control

AU-3

Severity

M

CCI

Version

WN10-AU-000555

Vuln IDs

V-99553

Rule IDs

SV-108657r1_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Other Policy Change Events contains events about EFS Data Recovery Agent policy changes, changes in Windows Filtering Platform filter, status on Security policy settings updates for local Group Policy settings, Central Access Policy changes, and detailed troubleshooting events for Cryptographic Next Generation (CNG) operations.

Checks: C-98403r1_chk

Security Option "Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" must be set to "Enabled" (WN10-SO-000030) for the detailed auditing subcategories to be effective. Use the AuditPol tool to review the current Audit Policy configuration: Open a Command Prompt with elevated privileges ("Run as Administrator"). Enter "AuditPol /get /category:*". Compare the AuditPol settings with the following. If the system does not audit the following, this is a finding: Policy Change >> Other Policy Change Events - Failure

Fix: F-105237r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Policy Change>> "Audit Other Policy Change Events" with "Failure" selected.

b

Passwords for enabled local Administrator accounts must be changed at least every 60 days.

IA-5 - Medium - CCI-000199 - V-99555 - SV-108659r2_rule

RMF Control

IA-5

Severity

M

CCI

CCI-000199

Version

WN10-SO-000280

Vuln IDs

V-99555

Rule IDs

SV-108659r2_rule

The longer a password is in use, the greater the opportunity for someone to gain unauthorized knowledge of the password. A local Administrator account is not generally used and its password not may be changed as frequently as necessary. Changing the password for enabled Administrator accounts on a regular basis will limit its exposure. Organizations that use an automated tool, such Microsoft's Local Administrator Password Solution (LAPS), on domain-joined systems can configure this to occur more frequently. LAPS will change the password every "30" days by default.

Checks: C-98405r2_chk

Review the password last set date for the enabled local Administrator account. On the local domain joined workstation: Open "PowerShell". Enter "Get-LocalUser –Name * | Select-Object *” If the "PasswordLastSet" date is greater than "60" days old for the local Administrator account for administering the computer/domain, this is a finding.

Fix: F-105239r2_fix

Change the enabled local Administrator account password at least every "60" days. Automated tools, such as Microsoft's LAPS, may be used on domain-joined member servers to meet this requirement.

b

Windows 10 Kernel (Direct Memory Access) DMA Protection must be enabled.

SC-4 - Medium - CCI-001090 - V-99557 - SV-108661r1_rule

RMF Control

SC-4

Severity

M

CCI

Version

WN10-EP-000310

Vuln IDs

V-99557

Rule IDs

SV-108661r1_rule

Kernel DMA Protection to protect PCs against drive-by Direct Memory Access (DMA) attacks using PCI hot plug devices connected to Thunderbolt™ 3 ports. Drive-by DMA attacks can lead to disclosure of sensitive information residing on a PC, or even injection of malware that allows attackers to bypass the lock screen or control PCs remotely.

Checks: C-98407r3_chk

This is NA prior to v1803 of Windows 10. If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Microsoft\Windows\Kernel DMA Protection Value Name: DeviceEnumerationPolicy Value Type: REG_DWORD Value: 0

Fix: F-105241r4_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Kernel DMA Protection >> "Enumeration policy for external devices incompatible with Kernel DMA Protection" to "Enabled" with "Enumeration Policy" set to "Block All".

b

The convenience PIN for Windows 10 must be disabled.

CM-7 - Medium - CCI-000381 - V-99559 - SV-108663r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-CC-000370

Vuln IDs

V-99559

Rule IDs

SV-108663r1_rule

This policy controls whether a domain user can sign in using a convenience PIN to prevent enabling (Password Stuffer).

Checks: C-98409r3_chk

If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Microsoft\Windows\System Value Name: AllowDomainPINLogon Value Type: REG_DWORD Value data: 0

Fix: F-105243r1_fix

Disable the convenience PIN sign-in. If this needs to be corrected configure the policy value for Computer Configuration >> Administrative Templates >> System >> Logon >> Set "Turn on convenience PIN sign-in" to "Disabled”.

b

Windows Ink Workspace configured but disallow access above the lock.

CM-7 - Medium - CCI-000381 - V-99561 - SV-108665r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-CC-000385

Vuln IDs

V-99561

Rule IDs

SV-108665r1_rule

Securing Windows Ink which contains application and features oriented towards pen computing.

Checks: C-98411r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Microsoft\WindowsInkWorkspace Value Name: AllowWindowsInkWorkspace Value Type: REG_DWORD Value data: 1

Fix: F-105245r1_fix

Disable the convenience PIN sign-in. If this needs to be corrected configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Ink Workspace >> Set " Allow Windows Ink Workspace" to "Enabled” Set Options ‘On, but disallow access above lock”.

a

Windows 10 should be configured to prevent users from receiving suggestions for third-party or additional applications.

CM-7 - Low - CCI-000381 - V-99563 - SV-108667r1_rule

RMF Control

CM-7

Severity

L

CCI

Version

WN10-CC-000390

Vuln IDs

V-99563

Rule IDs

SV-108667r1_rule

Windows spotlight features may suggest apps and content from third-party software publishers in addition to Microsoft apps and content.

Checks: C-98413r1_chk

If the following registry value does not exist or is not configured as specified, this is a finding. If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_CURRENT_USER Registry Path: \SOFTWARE\Policies\Microsoft\Windows\CloudContent\ Value Name: DisableThirdPartySuggestions Type: REG_DWORD Value: 0x00000001 (1)

Fix: F-105247r1_fix

Configure the policy value for User Configuration >> Administrative Templates >> Windows Components >> Cloud Content >> "Do not suggest third-party content in Windows spotlight" to "Enabled

b

Windows 10 must cover or disable the built-in or attached camera when not in use.

CM-7 - Medium - CCI-000381 - V-100093 - SV-109197r1_rule

RMF Control

CM-7

Severity

M

CCI