Windows 10 Security Technical Implementation Guide

Version

WN10-00-000005

Vuln IDs

V-63319

Rule IDs

SV-77809r1_rule

Features such as Credential Guard uses virtualization based security to protect secrets 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.

Checks: C-64053r1_chk

Verify domain-joined systems are using Windows 10 Enterprise Edition. For standalone systems, this is NA. Verify the version of Windows 10 is Enterprise. Run "System Information". Under "System Summary", verify "OS Name" = Microsoft Windows 10 Enterprise. If another version of Windows 10 is reported, this is a finding.

Fix: F-69237r1_fix

Use Windows 10 Enterprise 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".

a

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

CM-6 - Low - CCI-000366 - V-63323 - SV-77813r3_rule

RMF Control

CM-6

Severity

L

CCI

Version

WN10-00-000010

Vuln IDs

V-63323

Rule IDs

SV-77813r3_rule

Credential Guard uses virtualization based security to protect secrets 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-66157r1_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

System firmware or system controllers must have administrator accounts/passwords configured.

CM-6 - Medium - CCI-000366 - V-63327 - SV-77817r2_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-00-000015

Vuln IDs

V-63327

Rule IDs

SV-77817r2_rule

A system's firmware or system controller handles the initial startup of a system, and its configuration must be protected from unauthorized modification. When the firmware or system controller supports the creation of user accounts or passwords, such protections must be used and accounts/passwords only assigned to system administrators. Failure to protect firmware or system controller settings could result in denial of service or compromise of the system resulting from unauthorized configuration changes.

Checks: C-69221r1_chk

Verify a supervisor or administrator password is set in the firmware or system controller. If a password is not configured, this is a finding. If access is restricted by way of hypervisor configuration settings on virtual systems, this would not be a finding.

Fix: F-69247r1_fix

Configure a supervisor/administrator password in the system firmware.

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".

c

The system must not use removable media as the boot loader.

CM-6 - High - CCI-000366 - V-63331 - SV-77821r2_rule

RMF Control

CM-6

Severity

H

CCI

Version

WN10-00-000020

Vuln IDs

V-63331

Rule IDs

SV-77821r2_rule

Malicious users with removable boot media can gain access to a system configured to use removable media as the boot loader.

Checks: C-69223r1_chk

Verify whether the system firmware or controller allows removable media for the boot loader. If it does, this is a finding. If access is restricted by way of hypervisor configuration settings on virtual systems, this would not be a finding.

Fix: F-69249r1_fix

Configure the system to use a boot loader installed on fixed media.

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".

c

Mobile systems must encrypt all disks to protect the confidentiality and integrity of all information at rest.

SC-28 - High - CCI-001199 - V-63337 - SV-77827r1_rule

RMF Control

SC-28

Severity

H

CCI

CCI-001199

Version

WN10-00-000030

Vuln IDs

V-63337

Rule IDs

SV-77827r1_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-64073r1_chk

Verify mobile systems employ DoD-approved full disk encryption. If full disk encryption is not implemented, this is a finding. If BitLocker is used, verify it 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.

Fix: F-69257r1_fix

Install an approved DoD encryption package and enable full disk encryption on mobile systems. BitLocker can be enabled in "BitLocker Drive Encryption" in the Control Panel.

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-77831r1_rule

RMF Control

MA-4

Severity

M

CCI

CCI-000877

Version

WN10-CC-000340

Vuln IDs

V-63341

Rule IDs

SV-77831r1_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

The operating system 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-77833r1_rule

RMF Control

SI-2

Severity

M

CCI

CCI-001233

Version

WN10-00-000025

Vuln IDs

V-63343

Rule IDs

SV-77833r1_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-64077r1_chk

Determine if an approved tool capable of continuous scanning is loaded on the system. The recommended system is the McAfee HBSS. If no such tool is installed on the system, this is a finding.

Fix: F-69261r1_fix

Install an approved HBSS solution onto the system.

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-77835r2_rule

RMF Control

CM-7

Severity

M

CCI

CCI-001774

Version

WN10-00-000035

Vuln IDs

V-63345

Rule IDs

SV-77835r2_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-69225r2_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" under the Microsoft Windows section of the following link: https://www.nsa.gov/ia/mitigation_guidance/security_configuration_guides/operating_systems.shtml

Fix: F-69267r1_fix

This is applicable to unclassified systems, for other systems this is NA. 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" under the Microsoft Windows section of the following link: https://www.nsa.gov/ia/mitigation_guidance/security_configuration_guides/operating_systems.shtml

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

Systems must be maintained at a supported servicing level.

CM-6 - High - CCI-000366 - V-63349 - SV-77839r2_rule

RMF Control

CM-6

Severity

H

CCI

Version

WN10-00-000040

Vuln IDs

V-63349

Rule IDs

SV-77839r2_rule

Systems at unsupported servicing levels or releases will not receive security updates for new vulnerabilities which leaves them subject to exploitation. Windows 10 is maintained by Microsoft at servicing levels for specific periods of time to support Windows as a Service. The Current Branch (CB) is the only option for consumer versions and will be maintained for approximately 4 months before a new CB is declared. Only the current CB is serviced with updates. Professional and Enterprise versions may select the Current Branch for Business (CBB) which is declared at the end of a Current Branch period and will be maintained for approximately 8 additional months. There will only be 2 CBBs active at any given time which will be serviced with updates. A separate servicing branch intended for special purpose systems is the Long-Term Servicing Branch (LTSB) which will receive security updates for 10 years but excludes feature updates. Systems using an LTSB version may not be able to meet all requirements of the STIG as new features are added, which organizations will need to address.

Checks: C-69229r2_chk

Run "winver.exe". If the "About Windows" dialog box does not display: "Microsoft Windows Version 1511 (OS Build 10586.0)" or greater, this is a finding. No preview versions will be used in a production environment. The initial release of the Windows 10 STIG is based on the Windows 10 November Update. Until the next update is released, the version referenced above is the minimum required for both the Current Branch (CB) and Current Branch for Business (CBB). Special purpose systems using the Long-Term Servicing Branch (LTSB) must be at "Version 10.0 (OS Build 10240)" or greater. If LTSB versions are not at Build 10240 or greater, this is a finding.

Fix: F-74853r1_fix

Update systems on the Current Branch (CB) or Current Branch for Business (CBB) to "Microsoft Windows Version 1511 (OS Build 10586.0)" or greater. Special purpose systems using the Long-Term Servicing Branch (LTSB) must be at Version 10.0 (OS Build 10240)" or greater.

c

An approved, up-to-date, DoD antivirus program must be installed and used.

CM-6 - High - CCI-000366 - V-63351 - SV-77841r2_rule

RMF Control

CM-6

Severity

H

CCI

Version

WN10-00-000045

Vuln IDs

V-63351

Rule IDs

SV-77841r2_rule

Antivirus programs are a primary line of defense against the introduction of viruses and malicious code that can destroy data and even render a computer inoperable. Utilizing an antivirus program provides the ability to detect malicious code before extensive damage occurs. Updated virus scan data files help to protect a system, since new malware are identified by the software vendors on a continual basis.If another recognized antivirus product is installed and has a current signature, this is a finding; however, the severity may be reduced to a Category III.

Checks: C-64089r5_chk

If V-19910 from an antivirus STIG has been applied to the system, the signature verification portion of this requirement is NA. Verify a supported DoD antivirus product has been installed on the system. If McAfee VirusScan Enterprise 8.8 Patch 6 or later is not installed on the system, this is a finding. or If a product other than McAfee VirusScan Enterprise is used and V-19910 from an antivirus STIG has not been applied to the system, verify the date of the antivirus signature. If the antivirus program signature has not been updated within the past 7 days, this is a finding. The version numbers and the date of the signature can generally be checked by starting the antivirus program. The information may appear in the antivirus window or be available in the Help >> About window. The location varies from product to product.

Fix: F-69271r1_fix

Install McAfee VirusScan Enterprise 8.8 Patch 6 or later on the system. Update the signature file at least every 7 days.

c

Local volumes must be formatted using NTFS.

AC-3 - High - CCI-000213 - V-63353 - SV-77843r1_rule

RMF Control

AC-3

Severity

H

CCI

Version

WN10-00-000050

Vuln IDs

V-63353

Rule IDs

SV-77843r1_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-64091r1_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.

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-77851r1_rule

RMF Control

AC-6

Severity

H

CCI

Version

WN10-00-000070

Vuln IDs

V-63361

Rule IDs

SV-77851r1_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. Systems dedicated to the management of Active Directory (AD admin platforms, see V-36436 in the Active Directory Domain STIG) are exempt from this. AD admin platforms may use the Domain Admins group or a domain administrative group created specifically for AD admin platforms (see V-43711 in the Active Directory Domain STIG). Standard user accounts must not be members of the local administrators group.

Checks: C-64099r1_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. Systems dedicated to the management of Active Directory (AD admin platforms, see V-36436 in the Active Directory Domain STIG) are exempt from this. AD admin platforms may use the Domain Admins group or a domain administrative group created specifically for AD admin platforms (see V-43711 in the Active Directory Domain STIG). 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-69281r1_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. Systems dedicated to the management of Active Directory (AD admin platforms, see V-36436 in the Active Directory Domain STIG) are exempt from this. AD admin platforms may use the Domain Admins group or a domain administrative group created specifically for AD admin platforms (see V-43711 in the Active Directory Domain STIG). 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

Users must not be allowed to run virtual machines in Hyper-V on the system.

CM-7 - Medium - CCI-000381 - V-63365 - SV-77855r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-00-000080

Vuln IDs

V-63365

Rule IDs

SV-77855r1_rule

Allowing other operating systems to run on a secure system may allow users to circumvent security. Hyper-V is used by the Credential Guard feature on Windows 10. Preventing users from being assigned to the Hyper-V Administrators group will prevent them from accessing or creating virtual machines on the system.

Checks: C-64105r1_chk

Run "Computer Management". Navigate to System Tools >> Local Users and Groups >> Groups. Double click on "Hyper-V Administrators". If any groups or user accounts are listed in "Members:", this is a finding.

Fix: F-69285r1_fix

Remove any groups or users from the "Hyper-V Administrators" group.

a

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

CM-6 - Low - CCI-000366 - V-63367 - SV-77857r1_rule

RMF Control

CM-6

Severity

L

CCI

Version

WN10-00-000085

Vuln IDs

V-63367

Rule IDs

SV-77857r1_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-64107r1_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 Default Account (Disabled) Local administrator account(s)

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-77863r1_rule

RMF Control

AC-3

Severity

M

CCI

CCI-002165

Version

WN10-00-000095

Vuln IDs

V-63373

Rule IDs

SV-77863r1_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-64115r1_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 \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 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) 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) 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.

c

The Enhanced Mitigation Experience Toolkit (EMET) v5.5 or later must be installed on the system.

CM-6 - High - CCI-000366 - V-63379 - SV-77869r2_rule

RMF Control

CM-6

Severity

H

CCI

Version

WN10-EM-000005

Vuln IDs

V-63379

Rule IDs

SV-77869r2_rule

Attackers are constantly looking for vulnerabilities in systems and applications. The Enhanced Mitigation Experience Toolkit can enable several mechanisms, such as Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Structured Exception Handler Overwrite Protection (SEHOP) on the system and applications adding additional levels of protection.

Checks: C-64119r3_chk

This is applicable to unclassified systems, for other systems this is NA. If EMET has not been installed and DEP and SEHOP are configured as required in V-68845 and V-68849, this is NA. Verify EMET v5.5 or later is installed on the system. If EMET is not installed, or at the minimum required version, this is a finding.

Fix: F-69299r1_fix

This is applicable to unclassified systems, for other systems this is NA. Install EMET v5.5 or later on the system. EMET is available for download from Microsoft.

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 Enhanced Mitigation Experience Toolkit (EMET) Default Protections for Internet Explorer must be enabled.

SI-16 - Medium - CCI-002824 - V-63387 - SV-77877r3_rule

RMF Control

SI-16

Severity

M

CCI

Version

WN10-EM-000010

Vuln IDs

V-63387

Rule IDs

SV-77877r3_rule

Attackers are constantly looking for vulnerabilities in systems and applications. The Enhanced Mitigation Experience Toolkit can enable several mechanisms, such as Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Structured Exception Handler Overwrite Protection (SEHOP) on the system and applications adding additional levels of protection.

Checks: C-64129r4_chk

This is applicable to unclassified systems, for other systems this is NA. If EMET has not been installed and DEP and SEHOP are configured as required in V-68845 and V-68849, 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\EMET\Defaults\ Value Name: *\Internet Explorer\iexplore.exe Value Type: REG_SZ Value: +EAF+ eaf_modules:mshtml.dll;flash*.ocx;jscript*.dll;vbscript.dll;vgx.dll +ASR asr_modules:npjpi*.dll;jp2iexp.dll;vgx.dll;msxml4*.dll;wshom.ocx;scrrun.dll;vbscript.dll asr_zones:1;2 Due to a change in the registry structure for EMET 5.5, if the system has a previous version of EMET installed and configured, this setting needs to be set to "Not Configured" prior to the upgrade to EMET 5.5, and the new administrative template files copied to the appropriate area. The setting can then be re-enabled.

Fix: F-69309r2_fix

This is applicable to unclassified systems, for other systems this is NA. Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> EMET >> "Default Protections for Internet Explorer" to "Enabled". Note: The Enhanced Mitigation Experience Toolkit must be installed on the system and the administrative template files added to make this setting available. Due to a change in the registry structure for EMET 5.5, if the system has a previous version of EMET installed and configured, this setting needs to be set to "Not Configured" prior to the upgrade to EMET 5.5, and the new administrative template files copied to the appropriate area. The setting can then be re-enabled.

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

The Enhanced Mitigation Experience Toolkit (EMET) Default Protections for Popular Software must be enabled.

SI-16 - Medium - CCI-002824 - V-63391 - SV-77881r3_rule

RMF Control

SI-16

Severity

M

CCI

Version

WN10-EM-000015

Vuln IDs

V-63391

Rule IDs

SV-77881r3_rule

Attackers are constantly looking for vulnerabilities in systems and applications. The Enhanced Mitigation Experience Toolkit can enable several mechanisms, such as Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Structured Exception Handler Overwrite Protection (SEHOP) on the system and applications adding additional levels of protection.

Checks: C-64137r4_chk

This is applicable to unclassified systems, for other systems this is NA. If EMET has not been installed and DEP and SEHOP are configured as required in V-68845 and V-68849, this is NA. If the following registry values do not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\EMET\Defaults\ Value Type: REG_SZ (for each Value below) Values noted as "Blank" are empty in the registry. Value Name: *\7-Zip\7z.exe Value: -EAF Value Name: *\7-Zip\7zG.exe Value: -EAF Value Name: *\7-Zip\7zFM.exe Value: -EAF Value Name: *\Adobe\Adobe Photoshop CS*\Photoshop.exe Value: "Blank" Value Name: *\Foxit Reader\Foxit Reader.exe Value: "Blank" Value Name: *\Google\Chrome\Application\chrome.exe Value: +EAF+ eaf_modules:chrome_child.dll Value Name: *\Google\Google Talk\googletalk.exe Value: -DEP Value Name: *\iTunes\iTunes.exe Value: "Blank" Value Name: *\Microsoft Lync\communicator.exe Value: "Blank" Value Name: *\mIRC\mirc.exe Value: "Blank" Value Name: *\Mozilla Firefox\firefox.exe Value: +EAF+ eaf_modules:mozjs.dll;xul.dll Value Name: *\Mozilla Firefox\plugin-container.exe Value: "Blank" Value Name: *\Mozilla Thunderbird\plugin-container.exe Value: "Blank" Value Name: *\Mozilla Thunderbird\thunderbird.exe Value: "Blank" Value Name: *\Opera\*\opera.exe Value: "Blank" Value Name: *\Opera\opera.exe Value: "Blank" Value Name: *\Pidgin\pidgin.exe Value: "Blank" Value Name: *\QuickTime\QuickTimePlayer.exe Value: "Blank" Value Name: *\Real\RealPlayer\realconverter.exe Value: "Blank" Value Name: *\Real\RealPlayer\realplay.exe Value: "Blank" Value Name: *\Safari\Safari.exe Value: "Blank" Value Name: *\SkyDrive\SkyDrive.exe Value: "Blank" Value Name: *\Skype\Phone\Skype.exe Value: -EAF Value Name: *\VideoLAN\VLC\vlc.exe Value: "Blank" Value Name: *\Winamp\winamp.exe Value: "Blank" Value Name: *\Windows Live\Mail\wlmail.exe Value: "Blank" Value Name: *\Windows Live\Photo Gallery\WLXPhotoGallery.exe Value: "Blank" Value Name: *\Windows Live\Writer\WindowsLiveWriter.exe Value: "Blank" Value Name: *\Windows Media Player\wmplayer.exe Value: -EAF -MandatoryASLR Value Name: *\WinRAR\rar.exe Value: "Blank" Value Name: *\WinRAR\unrar.exe Value: "Blank" Value Name: *\WinRAR\winrar.exe Value: "Blank" Value Name: *\WinZip\winzip32.exe Value: "Blank" Value Name: *\WinZip\winzip64.exe Value: "Blank" Due to a change in the registry structure for EMET 5.5, if the system has a previous version of EMET installed and configured, this setting needs to be set to "Not Configured" prior to the upgrade to EMET 5.5, and the new administrative template files copied to the appropriate area. The setting can then be re-enabled.

Fix: F-69317r2_fix

This is applicable to unclassified systems, for other systems this is NA. Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> EMET >> "Default Protections for Popular Software" to "Enabled". Note: The Enhanced Mitigation Experience Toolkit must be installed on the system and the administrative template files added to make this setting available. Due to a change in the registry structure for EMET 5.5, if the system has a previous version of EMET installed and configured, this setting needs to be set to "Not Configured" prior to the upgrade to EMET 5.5, and the new administrative template files copied to the appropriate area. The setting can then be re-enabled.

b

Software certificate installation files must be removed from a system.

CM-6 - Medium - CCI-000366 - V-63393 - SV-77883r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-00-000130

Vuln IDs

V-63393

Rule IDs

SV-77883r1_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-64141r1_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). 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-69321r1_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).

b

The HBSS McAfee Agent must be installed.

CM-6 - Medium - CCI-000366 - V-63395 - SV-77885r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-00-000125

Vuln IDs

V-63395

Rule IDs

SV-77885r1_rule

Checks: C-64143r1_chk

Search for the file FrameworkService.exe (by default in the \Program Files\McAfee\Common Framework\ directory) and check that the version is 4 or above. Also verify that the Service "McAfee Framework Service" is running. If either of these conditions does not exist, this is a finding.

Fix: F-69323r1_fix

Deploy the McAfee Agent as detailed in accordance with the DoD HBSS STIG.

b

The Enhanced Mitigation Experience Toolkit (EMET) Default Protections for Recommended Software must be enabled.

SI-16 - Medium - CCI-002824 - V-63397 - SV-77887r3_rule

RMF Control

SI-16

Severity

M

CCI

Version

WN10-EM-000020

Vuln IDs

V-63397

Rule IDs

SV-77887r3_rule

Attackers are constantly looking for vulnerabilities in systems and applications. The Enhanced Mitigation Experience Toolkit can enable several mechanisms, such as Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Structured Exception Handler Overwrite Protection (SEHOP) on the system and applications adding additional levels of protection.

Checks: C-64145r4_chk

This is applicable to unclassified systems, for other systems this is NA. If EMET has not been installed and DEP and SEHOP are configured as required in V-68845 and V-68849, 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\EMET\Defaults\ Value Type: REG_SZ (for each Value below) Values noted as "Blank" are empty in the registry. Value Name: *\Adobe\*\Reader\AcroRd32.exe Value: +EAF+ eaf_modules:AcroRd32.dll;Acrofx32.dll;AcroForm.api Value Name: *\Adobe\Acrobat*\Acrobat\Acrobat.exe Value: +EAF+ eaf_modules:AcroRd32.dll;Acrofx32.dll;AcroForm.api Value Name: *\Java\jre*\bin\java.exe Value: -HeapSpray Value Name: *\Java\jre*\bin\javaw.exe Value: -HeapSpray Value Name: *\Java\jre*\bin\javaws.exe Value: -HeapSpray Value Name: *\OFFICE1*\EXCEL.EXE Value: +ASR asr_modules:flash*.ocx Value Name: *\OFFICE1*\INFOPATH.EXE Value: "Blank" Value Name: *\OFFICE1*\LYNC.EXE Value: "Blank" Value Name: *\OFFICE1*\MSACCESS.EXE Value: "Blank" Value Name: *\OFFICE1*\MSPUB.EXE Value: "Blank" Value Name: *\OFFICE1*\OIS.EXE Value: "Blank" Value Name: *\OFFICE1*\OUTLOOK.EXE Value: "Blank" Value Name: *\OFFICE1*\POWERPNT.EXE Value: +ASR asr_modules:flash*.ocx Value Name: *\OFFICE1*\PPTVIEW.EXE Value: "Blank" Value Name: *\OFFICE1*\VISIO.EXE Value: "Blank" Value Name: *\OFFICE1*\VPREVIEW.EXE Value: "Blank" Value Name: *\OFFICE1*\WINWORD.EXE Value: +ASR asr_modules:flash*.ocx Value Name: *\Windows NT\Accessories\wordpad.exe Value: "Blank" Due to a change in the registry structure for EMET 5.5, if the system has a previous version of EMET installed and configured, this setting needs to be set to "Not Configured" prior to the upgrade to EMET 5.5, and the new administrative template files copied to the appropriate area. The setting can then be re-enabled.

Fix: F-69325r2_fix

This is applicable to unclassified systems, for other systems this is NA. Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> EMET >> "Default Protections for Recommended Software" to "Enabled". Note: The Enhanced Mitigation Experience Toolkit must be installed on the system and the administrative template files added to make this setting available. Due to a change in the registry structure for EMET 5.5, if the system has a previous version of EMET installed and configured, this setting needs to be set to "Not Configured" prior to the upgrade to EMET 5.5, and the new administrative template files copied to the appropriate area. The setting can then be re-enabled.

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

The Enhanced Mitigation Experience Toolkit (EMET) system-wide Address Space Layout Randomization (ASLR) must be enabled and configured to Application Opt In.

SI-16 - Medium - CCI-002824 - V-63401 - SV-77891r2_rule

RMF Control

SI-16

Severity

M

CCI

Version

WN10-EM-000025

Vuln IDs

V-63401

Rule IDs

SV-77891r2_rule

Attackers are constantly looking for vulnerabilities in systems and applications. The Enhanced Mitigation Experience Toolkit can enable several mechanisms, such as Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Structured Exception Handler Overwrite Protection (SEHOP) on the system and applications adding additional levels of protection.

Checks: C-64149r3_chk

This is applicable to unclassified systems, for other systems this is NA. If EMET has not been installed and DEP and SEHOP are configured as required in V-68845 and V-68849, 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\EMET\SysSettings\ Value Name: ASLR Value Type: REG_DWORD Value: 3

Fix: F-69329r2_fix

This is applicable to unclassified systems, for other systems this is NA. Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> EMET >> "System ASLR" to "Enabled" with "Application Opt In" selected. Note: The Enhanced Mitigation Experience Toolkit must be installed on the system and the administrative template files added to make this setting available.

b

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

CM-6 - Medium - CCI-000366 - V-63403 - SV-77893r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-00-000140

Vuln IDs

V-63403

Rule IDs

SV-77893r1_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-64151r1_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 Firewall with Advanced Security >> Windows 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-69331r1_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 Firewall with Advanced Security >> Windows 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

The lockout duration must be configured to require an administrator to unlock an account.

AC-7 - Medium - CCI-002238 - V-63405 - SV-77895r1_rule

RMF Control

AC-7

Severity

M

CCI

CCI-002238

Version

WN10-AC-000005

Vuln IDs

V-63405

Rule IDs

SV-77895r1_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. A value of 0 will require an administrator to unlock the account.

Checks: C-64155r1_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 not set to "0", requiring an administrator to unlock the account, this is a finding.

Fix: F-69333r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Account Lockout Policy >> "Account lockout duration" to "0" minutes, "Account is locked out until administrator unlocks it".

b

The Enhanced Mitigation Experience Toolkit (EMET) system-wide Data Execution Prevention (DEP) must be enabled and configured to at least Application Opt Out.

SI-16 - Medium - CCI-002824 - V-63407 - SV-77897r2_rule

RMF Control

SI-16

Severity

M

CCI

Version

WN10-EM-000030

Vuln IDs

V-63407

Rule IDs

SV-77897r2_rule

Attackers are constantly looking for vulnerabilities in systems and applications. The Enhanced Mitigation Experience Toolkit can enable several mechanisms, such as Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Structured Exception Handler Overwrite Protection (SEHOP) on the system and applications adding additional levels of protection.

Checks: C-64153r3_chk

This is applicable to unclassified systems, for other systems this is NA. If EMET has not been installed and DEP and SEHOP are configured as required in V-68845 and V-68849, 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\EMET\SysSettings\ Value Name: DEP Value Type: REG_DWORD Value: 2 (Application Opt Out) Applications that do not function properly due to this setting, and are opted out, must be documented with the ISSO.

Fix: F-69335r2_fix

This is applicable to unclassified systems, for other systems this is NA. Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> EMET >> "System DEP" to "Enabled" with at least "Application Opt Out" selected. Note: The Enhanced Mitigation Experience Toolkit must be installed on the system and the administrative template files added to make this setting available. Document applications that do not function properly due to this setting, and are opted out, with the ISSO. Opted out exceptions can be configured with the following command. EMET_Conf --Set "application path\executable name" -DEP Alternately, configured exceptions in System Properties. Select "System" in Control Panel. Select "Advanced system settings". Click "Settings" in the "Performance" section. Select the "Data Execution Prevention" tab. Select "Turn on DEP for all programs and services except those I select:". Applications that are opted out are configured in the window below this selection.

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 Enhanced Mitigation Experience Toolkit (EMET) system-wide Structured Exception Handler Overwrite Protection (SEHOP) must be configured to Application Opt Out.

SI-16 - Medium - CCI-002824 - V-63411 - SV-77901r2_rule

RMF Control

SI-16

Severity

M

CCI

Version

WN10-EM-000035

Vuln IDs

V-63411

Rule IDs

SV-77901r2_rule

Attackers are constantly looking for vulnerabilities in systems and applications. The Enhanced Mitigation Experience Toolkit can enable several mechanisms, such as Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Structured Exception Handler Overwrite Protection (SEHOP) on the system and applications adding additional levels of protection.

Checks: C-64159r3_chk

This is applicable to unclassified systems, for other systems this is NA. If EMET has not been installed and DEP and SEHOP are configured as required in V-68845 and V-68849, 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\EMET\SysSettings\ Value Name: SEHOP Value Type: REG_DWORD Value: 2 Applications that do not function properly due to this setting, and are opted out, must be documented with the ISSO.

Fix: F-69339r2_fix

This is applicable to unclassified systems, for other systems this is NA. Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> EMET >> "System SEHOP" to "Enabled" with "Application Opt Out" selected. Note: The Enhanced Mitigation Experience Toolkit must be installed on the system and the administrative template files added to make this setting available. Document applications that do not function properly due to this setting, and are opted out, with the ISSO. Opted out exceptions can be configured with the following command. EMET_Conf --Set "application path\executable name" -SEHOP

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 Enhanced Mitigation Experience Toolkit (EMET) Default Actions and Mitigations Settings must enable Deep Hooks.

SI-16 - Medium - CCI-002824 - V-63417 - SV-77907r2_rule

RMF Control

SI-16

Severity

M

CCI

Version

WN10-EM-000040

Vuln IDs

V-63417

Rule IDs

SV-77907r2_rule

Attackers are constantly looking for vulnerabilities in systems and applications. The Enhanced Mitigation Experience Toolkit can enable several mechanisms, such as Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Structured Exception Handler Overwrite Protection (SEHOP) on the system and applications adding additional levels of protection. This setting enables the Deep Hooks mitigation on a system which protects lower level APIs that are used by critical top level APIs.

Checks: C-64165r3_chk

This is applicable to unclassified systems, for other systems this is NA. If EMET has not been installed and DEP and SEHOP are configured as required in V-68845 and V-68849, 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\EMET\SysSettings\ Value Name: DeepHooks Value Type: REG_DWORD Value: 1

Fix: F-69345r1_fix

This is applicable to unclassified systems, for other systems this is NA. Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> EMET >> "Default Actions and Mitigation Settings" to "Enabled" with "Enabled" selected for "Deep Hooks:". Note: The Enhanced Mitigation Experience Toolkit must be installed on the system and the administrative template files added to make this setting available.

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 Enhanced Mitigation Experience Toolkit (EMET) Default Actions and Mitigations Settings must enable Anti Detours.

SI-16 - Medium - CCI-002824 - V-63425 - SV-77915r2_rule

RMF Control

SI-16

Severity

M

CCI

Version

WN10-EM-000045

Vuln IDs

V-63425

Rule IDs

SV-77915r2_rule

Attackers are constantly looking for vulnerabilities in systems and applications. The Enhanced Mitigation Experience Toolkit can enable several mechanisms, such as Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Structured Exception Handler Overwrite Protection (SEHOP) on the system and applications adding additional levels of protection. This setting enables the Anti detours mitigation on a system which prevents exploits from evading hooks functions.

Checks: C-64173r3_chk

This is applicable to unclassified systems, for other systems this is NA. If EMET has not been installed and DEP and SEHOP are configured as required in V-68845 and V-68849, 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\EMET\SysSettings\ Value Name: AntiDetours Value Type: REG_DWORD Value: 1

Fix: F-69353r1_fix

This is applicable to unclassified systems, for other systems this is NA. Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> EMET >> "Default Actions and Mitigation Settings" to "Enabled" with "Enabled" selected for "Anti Detours:". Note: The Enhanced Mitigation Experience Toolkit must be installed on the system and the administrative template files added to make this setting available.

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 Enhanced Mitigation Experience Toolkit (EMET) Default Actions and Mitigations Settings must enable Banned Functions.

SI-16 - Medium - CCI-002824 - V-63433 - SV-77923r2_rule

RMF Control

SI-16

Severity

M

CCI

Version

WN10-EM-000050

Vuln IDs

V-63433

Rule IDs

SV-77923r2_rule

Attackers are constantly looking for vulnerabilities in systems and applications. The Enhanced Mitigation Experience Toolkit can enable several mechanisms, such as Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Structured Exception Handler Overwrite Protection (SEHOP) on the system and applications adding additional levels of protection. This setting enables the Banned functions mitigation on a system which blocks certain APIs.

Checks: C-64179r3_chk

This is applicable to unclassified systems, for other systems this is NA. If EMET has not been installed and DEP and SEHOP are configured as required in V-68845 and V-68849, 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\EMET\SysSettings\ Value Name: BannedFunctions Value Type: REG_DWORD Value: 1

Fix: F-69361r2_fix

This is applicable to unclassified systems, for other systems this is NA. Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> EMET >> "Default Actions and Mitigation Settings" to "Enabled" with "Enabled" selected for "Banned Functions:". Note: The Enhanced Mitigation Experience Toolkit must be installed on the system and the administrative template files added to make this setting available.

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 Windows Error Reporting Service must be running and configured to start automatically.

SI-11 - Medium - CCI-001312 - V-63437 - SV-77927r1_rule

RMF Control

SI-11

Severity

M

CCI

Version

WN10-ER-000005

Vuln IDs

V-63437

Rule IDs

SV-77927r1_rule

Windows Error Reporting information can be used to help diagnose day-to-day software issues, as well as help discover malicious code and possibly zero-day attacks on systems.

Checks: C-64185r1_chk

Verify the Start Type and Status of the Windows Error Reporting Service. Run "Services.msc". If the Windows Error Reporting Service does not have a Status of "Running" and a Start Type of "Automatic", this is a finding.

Fix: F-69365r1_fix

Configure the Start Type of the Windows Error Reporting Service to "Automatic" and ensure the service has a status of "Running".

b

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

AU-12 - Medium - CCI-000172 - V-63439 - SV-77929r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000015

Vuln IDs

V-63439

Rule IDs

SV-77929r1_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. Other Account Management records events such as the access of a password hash or the Password Policy Checking API being called.

Checks: C-64187r1_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 >> Other Account Management Events - Failure

Fix: F-69367r1_fix

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

b

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

AU-12 - Medium - CCI-000172 - V-63441 - SV-77931r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000020

Vuln IDs

V-63441

Rule IDs

SV-77931r1_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. Other Account Management records events such as the access of a password hash or the Password Policy Checking API being called.

Checks: C-64189r1_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 >> Other Account Management Events - Success

Fix: F-69369r1_fix

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

b

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

AC-2 - Medium - CCI-000018 - V-63443 - SV-77933r1_rule

RMF Control

AC-2

Severity

M

CCI

Version

WN10-AU-000025

Vuln IDs

V-63443

Rule IDs

SV-77933r1_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-64191r1_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 - Failure

Fix: F-69371r1_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 "Failure" 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

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

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

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 - Account Lockout successes.

AU-12 - Medium - CCI-000172 - V-63455 - SV-77945r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000055

Vuln IDs

V-63455

Rule IDs

SV-77945r1_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-64203r1_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 - Success

Fix: F-69383r1_fix

Computer Configuration >> Windows Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Logon/Logoff >> "Audit Account Lockout" with "Success" selected.

b

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

AU-12 - Medium - CCI-000172 - V-63457 - SV-77947r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000060

Vuln IDs

V-63457

Rule IDs

SV-77947r1_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-69385r1_fix

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 generate error reports.

SI-11 - Medium - CCI-001312 - V-63461 - SV-77949r1_rule

RMF Control

SI-11

Severity

M

CCI

Version

WN10-ER-000010

Vuln IDs

V-63461

Rule IDs

SV-77949r1_rule

Enabling Windows Error Reporting generates information useful to system administrators and forensics analysts for diagnosing system problems and investigating intrusions. If Windows Error Reporting is turned off, valuable system diagnostic and vulnerability information may be lost.

Checks: C-64209r1_chk

The default behavior for Windows Error Reporting is to send error reports. 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\Windows Error Reporting\ Value Name: Disabled Value Type: REG_DWORD Value: 0 (or if the Value Name does not exist)

Fix: F-69389r2_fix

The default behavior for Windows Error Reporting is to send error reports. If this needs to be corrected, configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Error Reporting >> "Disable Windows Error Reporting" to "Disabled".

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-77961r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000085

Vuln IDs

V-63471

Rule IDs

SV-77961r1_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-64221r1_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

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-77963r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000090

Vuln IDs

V-63473

Rule IDs

SV-77963r1_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-64223r1_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

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 failures.

AU-12 - Medium - CCI-000172 - V-63475 - SV-77965r2_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000095

Vuln IDs

V-63475

Rule IDs

SV-77965r2_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-64225r1_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 - Failure

Fix: F-69405r2_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 "Failure" 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 save Error Reporting events and messages to the system event log.

SI-11 - Medium - CCI-001312 - V-63489 - SV-77979r1_rule

RMF Control

SI-11

Severity

M

CCI

Version

WN10-ER-000015

Vuln IDs

V-63489

Rule IDs

SV-77979r1_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. This setting ensures that Error Reporting events will be saved in the system event log.

Checks: C-64239r1_chk

The default behavior for Windows Error Reporting is to save events and messages to the system event log. 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\Windows Error Reporting\ Value Name: LoggingDisabled Value Type: REG_DWORD Value: 0 (or if the Value Name does not exist)

Fix: F-69419r1_fix

The default behavior for Windows Error Reporting is to save events and messages to the system event log. If this needs to be corrected, configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Error Reporting >> "Disable logging" to "Disabled".

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 allow a local or DOD-wide collector to request additional error reporting diagnostic data to be sent.

SI-11 - Medium - CCI-001312 - V-63493 - SV-77983r1_rule

RMF Control

SI-11

Severity

M

CCI

Version

WN10-ER-000020

Vuln IDs

V-63493

Rule IDs

SV-77983r1_rule

Sending additional error reporting data provides valuable system diagnostic and vulnerability information that would otherwise not be generated nor collected. This setting controls whether additional data in support of error reports can be sent to a local or DOD-wide reporting site.

Checks: C-64243r1_chk

The default behavior for Windows Error Reporting is to allow additional data to be requested by collection servers. 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\Windows Error Reporting\ Value Name: DontSendAdditionalData Value Type: REG_DWORD Value: 0 (or if the Value Name does not exist)

Fix: F-69423r1_fix

The default behavior for Windows Error Reporting is to allow additional data to be requested by collection servers. If this needs to be corrected, configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Error Reporting >> "Do not send additional data" to "Disabled".

b

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

AU-12 - Medium - CCI-000172 - V-63495 - SV-77985r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000125

Vuln IDs

V-63495

Rule IDs

SV-77985r1_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-64245r1_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 - Success

Fix: F-69425r1_fix

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

b

The system must be configured to collect multiple error reports of the same event type.

SI-11 - Medium - CCI-001312 - V-63497 - SV-77987r1_rule

RMF Control

SI-11

Severity

M

CCI

Version

WN10-ER-000025

Vuln IDs

V-63497

Rule IDs

SV-77987r1_rule

Multiple error reports of the same error type are useful in diagnosing potential system configuration issues, as well as intrusion activity. This setting controls whether error reporting collects additional, second-level report data even if a CAB file containing data about the event types has already been collected.

Checks: C-64247r1_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 Error Reporting\ Value Name: BypassDataThrottling Value Type: REG_DWORD Value: 1

Fix: F-69427r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Error Reporting >> "Do not throttle additional data" to "Enabled".

b

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

AU-12 - Medium - CCI-000172 - V-63499 - SV-77989r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000130

Vuln IDs

V-63499

Rule IDs

SV-77989r1_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-69429r1_fix

Configure the policy value for Computer Configuration >> Windows 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-77993r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000135

Vuln IDs

V-63503

Rule IDs

SV-77993r1_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-69433r1_fix

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

b

The system must be configured to prevent the display of error messages to the user.

SI-11 - Medium - CCI-001314 - V-63505 - SV-77995r1_rule

RMF Control

SI-11

Severity

M

CCI

CCI-001314

Version

WN10-ER-000030

Vuln IDs

V-63505

Rule IDs

SV-77995r1_rule

Displaying error messages to users provides them the option of sending the reports. Error reports should be sent silently, unknown to the user. This setting controls whether users are shown an error dialog box that lets them report an error.

Checks: C-64255r1_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 Error Reporting\ Value Name: DontShowUI Value Type: REG_DWORD Value: 1

Fix: F-69435r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Error Reporting >> "Prevent display of the user interface for critical errors" to "Enabled".

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 failures.

AU-12 - Medium - CCI-000172 - V-63511 - SV-78001r1_rule

RMF Control

AU-12

Severity

M

CCI

Version

WN10-AU-000145

Vuln IDs

V-63511

Rule IDs

SV-78001r1_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-64261r1_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 - Failure

Fix: F-69441r1_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 "Failure" 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 system must be configured to store error reports locally, on the system or in the enclave, and not send them to Microsoft.

SI-11 - Medium - CCI-001312 - V-63521 - SV-78011r1_rule

RMF Control

SI-11

Severity

M

CCI

Version

WN10-ER-000035

Vuln IDs

V-63521

Rule IDs

SV-78011r1_rule

Forwarding error reports to vendors could expose sensitive information. This setting controls the configuration of a local or DOD-wide error reporting site. In order to not send the data to any system at this time, yet create the reports locally on the system, this value needs to be a single blank character. To forward error reports to a collection server, the site's error reporting server name or IP address must be defined.

Checks: C-64271r1_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 Error Reporting\ Value Name: CorporateWerServer Value Type: REG_SZ Value: " " (A single BLANK character to store the data on the system or the error reporting server name or IP address to forward the data to.)

Fix: F-69451r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Error Reporting >> Advanced Error Reporting Settings >> "Configure Corporate Windows Error Reporting" >> to "Enabled" with "Corporate server name:" defined as a single blank character to store the data on the system or the name or IP address of the local collection server.

b

The Security event log size must be configured to 196608 KB or greater.

AU-4 - Medium - CCI-001849 - V-63523 - SV-78013r1_rule

RMF Control

AU-4

Severity

M

CCI

CCI-001849

Version

WN10-AU-000505

Vuln IDs

V-63523

Rule IDs

SV-78013r1_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-64273r1_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: 0x00030000 (196608) (or greater)

Fix: F-69453r1_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 >> Security >> "Specify the maximum log file size (KB)" to "Enabled" with a "Maximum Log Size (KB)" of "196608" or greater.

b

The system must be configured to use SSL to forward error reports.

SC-8 - Medium - CCI-002418 - V-63525 - SV-78015r1_rule

RMF Control

SC-8

Severity

M

CCI

Version

WN10-ER-000040

Vuln IDs

V-63525

Rule IDs

SV-78015r1_rule

The use of SSL enables the secure forwarding of error reporting data from local systems to a reporting site.

Checks: C-64275r1_chk

This requirement is NA if Windows Error Reporting is not configured to forward reports to a collection server (see WN10-ER-000035). 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 Error Reporting\ Value Name: CorporateWerUseSSL Value Type: REG_DWORD Value: 1

Fix: F-69455r1_fix

This requirement is NA if Windows Error Reporting is not configured to forward reports to a collection server (see WN10-ER-000035). Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Error Reporting >> Advanced Error Reporting Settings >> "Configure Corporate Windows Error Reporting" to "Enabled" with "Connect using SSL" selected.

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

The system must be configured to send error reports on TCP port 1232.

CM-6 - Medium - CCI-000366 - V-63529 - SV-78019r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-ER-000045

Vuln IDs

V-63529

Rule IDs

SV-78019r1_rule

An error reporting site's TCP port must be defined in the local system in order to forward data from local systems via TCP. Port 1232 is the recommended port setting.

Checks: C-64279r1_chk

This requirement is NA if Windows Error Reporting is not configured to forward reports to a collection server (see WN10-ER-000035). 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 Error Reporting\ Value Name: CorporateWerPortNumber Value Type: REG_DWORD Value: 0x000004d0 (1232)

Fix: F-69459r1_fix

This requirement is NA if Windows Error Reporting is not configured to forward reports to a collection server (see WN10-ER-000035). Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Error Reporting >> Advanced Error Reporting Settings >> "Configure Corporate Windows Error Reporting" to "Enabled" with "1232" defined as the "Server Port".

b

Permissions for the Application event log must prevent access by non-privileged accounts.

AU-9 - Medium - CCI-000162 - V-63533 - SV-78023r1_rule

RMF Control

AU-9

Severity

M

CCI

Version

WN10-AU-000515

Vuln IDs

V-63533

Rule IDs

SV-78023r1_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-64283r1_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.

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

The system must be configured to archive error reports.

SI-11 - Medium - CCI-001312 - V-63535 - SV-78025r1_rule

RMF Control

SI-11

Severity

M

CCI

Version

WN10-ER-000050

Vuln IDs

V-63535

Rule IDs

SV-78025r1_rule

The error reporting archive is stored locally on the system, and is created after an error report has been sent to the local collector or DOD-wide collector (if defined). This creates a backup of the error reporting.

Checks: C-64285r1_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 Error Reporting\ Value Name: DisableArchive Value Type: REG_DWORD Value: 0

Fix: F-69465r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Error Reporting >> Advanced Error Reporting Settings >> "Configure Report Archive" to "Enabled".

b

Permissions for the Security event log must prevent access by non-privileged accounts.

AU-9 - Medium - CCI-000162 - V-63537 - SV-78027r1_rule

RMF Control

AU-9

Severity

M

CCI

Version

WN10-AU-000520

Vuln IDs

V-63537

Rule IDs

SV-78027r1_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-64287r1_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.

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

The system must be configured to store all data in the error report archive.

SI-11 - Medium - CCI-001312 - V-63539 - SV-78029r1_rule

RMF Control

SI-11

Severity

M

CCI

Version

WN10-ER-000055

Vuln IDs

V-63539

Rule IDs

SV-78029r1_rule

The error reporting archive is stored locally on the system and is created after an error report has been sent to the local collector or DOD-wide collector (if defined). Storing all data, including memory contents, adds data that is very helpful in analyzing the errors.

Checks: C-64289r1_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 Error Reporting\ Value Name: ConfigureArchive Value Type: REG_DWORD Value: 0x00000002 (2)

Fix: F-69469r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Error Reporting >> Advanced Error Reporting Settings >> "Configure Report Archive" to "Enabled" with "Store all" selected for "Archive behavior:".

b

Permissions for the System event log must prevent access by non-privileged accounts.

AU-9 - Medium - CCI-000162 - V-63541 - SV-78031r1_rule

RMF Control

AU-9

Severity

M

CCI

Version

WN10-AU-000525

Vuln IDs

V-63541

Rule IDs

SV-78031r1_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-64291r1_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.

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

The maximum number of error reports to archive on a system must be configured to 100 or greater.

SI-11 - Medium - CCI-001312 - V-63543 - SV-78033r1_rule

RMF Control

SI-11

Severity

M

CCI

Version

WN10-ER-000060

Vuln IDs

V-63543

Rule IDs

SV-78033r1_rule

The retention of archived reports provides a history. Older reports are automatically deleted as new reports are generated once the maximum limit has been met. The archive is stored locally on the system and is created after the error report has been sent to the local collector or DOD-wide collector (if defined).

Checks: C-64293r1_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 Error Reporting\ Value Name: MaxArchiveCount Value Type: REG_DWORD Value: 0x00000064 (100) (or greater)

Fix: F-69473r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Error Reporting >> Advanced Error Reporting Settings >> "Configure Report Archive" to "Enabled" with "Maximum number of reports to store:" set to "100" or greater.

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 system must be configured to queue error reports until a local or DOD-wide collector is available.

SI-11 - Medium - CCI-001312 - V-63547 - SV-78037r1_rule

RMF Control

SI-11

Severity

M

CCI

Version

WN10-ER-000065

Vuln IDs

V-63547

Rule IDs

SV-78037r1_rule

Queueing error reports provides the ability for a system to collect reports locally or until a collection server can be contacted. Valuable system diagnostic and vulnerability information may be lost if the report queue is disabled.

Checks: C-64297r1_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 Error Reporting\ Value Name: DisableQueue Value Type: REG_DWORD Value: 0

Fix: F-69477r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Error Reporting >> Advanced Error Reporting Settings >> "Configure Report Queue" 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

Automatic logons must be disabled.

CM-6 - Medium - CCI-000366 - V-63551 - SV-78041r2_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000015

Vuln IDs

V-63551

Rule IDs

SV-78041r2_rule

Allowing a system to automatically log on when the machine is booted could give access to any unauthorized individual who restarts the computer. Automatic logon with administrator privileges would give full access to an unauthorized individual.If the DefaultName or DefaultDomainName in the same registry path contain an administrator account name and the DefaultPassword contains a value, this is a CAT I finding.

Checks: C-64301r3_chk

This is the default configuration for this setting (Disabled). 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: AutoAdminLogon Value Type: REG_SZ Value: 0

Fix: F-69481r1_fix

This is the default configuration for this setting (Disabled). If this needs to be corrected, configure the policy value for Computer Configuration >> Administrative Templates >> MSS (Legacy) >> "MSS: (AutoAdminLogon) Enable Automatic Logon (not recommended)" 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. Ensure no passwords are stored in the "DefaultPassword" registry value noted below. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\ Value Name: DefaultPassword

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 add all error reports to the queue.

SI-11 - Medium - CCI-001312 - V-63557 - SV-78047r1_rule

RMF Control

SI-11

Severity

M

CCI

Version

WN10-ER-000070

Vuln IDs

V-63557

Rule IDs

SV-78047r1_rule

Error reports are queued for sending to an error reporting site when the queueing behavior is set to Always Queue. This will maintain the reports in the queue until a connection can be made to the collection server.

Checks: C-64307r1_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 Error Reporting\ Value Name: ForceQueue Value Type: REG_DWORD Value: 1

Fix: F-69487r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Error Reporting >> Advanced Error Reporting Settings >> "Configure Report Queue" to "Enabled" with "Queuing behavior:" to "Always queue".

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.

b

The maximum number of error reports to queue on a system must be configured to 50 or greater.

SI-11 - Medium - CCI-001312 - V-63561 - SV-78051r1_rule

RMF Control

SI-11

Severity

M

CCI

Version

WN10-ER-000075

Vuln IDs

V-63561

Rule IDs

SV-78051r1_rule

The error reporting queue is stored locally on the system and contains the error reports until they have been manually removed or automatically sent to the local collector or DOD-wide collector (if defined). Once a report has been sent to a collector, it is moved to the report archive. Old reports are deleted as new ones arrive once the maximum limit has been met.

Checks: C-64311r1_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 Error Reporting\ Value Name: MaxQueueCount Value Type: REG_DWORD Value: 0x00000032 (50) (or greater)

Fix: F-69491r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Error Reporting >> Advanced Error Reporting Settings >> "Configure Report Queue" to "Enabled" with "Maximum number of reports to queue:" set to "50" or greater.

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.

b

The system must be configured to attempt to forward queued error reports once a day.

SI-11 - Medium - CCI-001312 - V-63565 - SV-78055r1_rule

RMF Control

SI-11

Severity

M

CCI

Version

WN10-ER-000080

Vuln IDs

V-63565

Rule IDs

SV-78055r1_rule

Error reports stored in the queue should be forwarded to a local or DOD-wide collection site when the system can connect to the site. This setting controls the frequency a system will use to try forwarding queued reports to the local or DOD-wide collector.

Checks: C-64315r1_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 Error Reporting\ Value Name: QueuePesterInterval Value Type: REG_DWORD Value: 1

Fix: F-69495r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Error Reporting >> Advanced Error Reporting Settings >> "Configure Report Queue" to "Enabled" with "Number of days between solution check reminders:" set to "1".

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-78059r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000040

Vuln IDs

V-63569

Rule IDs

SV-78059r1_rule

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

Checks: C-64319r1_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\LanmanWorkstation\ Value Name: AllowInsecureGuestAuth Type: REG_DWORD Value: 0

Fix: F-69499r2_fix

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

b

The system must be configured to automatically consent to send all data requested by a local or DOD-wide error collection site.

SI-11 - Medium - CCI-001312 - V-63571 - SV-78061r1_rule

RMF Control

SI-11

Severity

M

CCI

Version

WN10-ER-000085

Vuln IDs

V-63571

Rule IDs

SV-78061r1_rule

Configuring error reporting to send all requested data ensures all relevant data associated with the error report is captured for later analysis. This setting determines the default consent behavior of Windows Error Reporting.

Checks: C-64321r1_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 Error Reporting\Consent\ Value Name: DefaultConsent Value Type: REG_DWORD Value: 0x00000004 (4)

Fix: F-69501r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Error Reporting >> Consent >> "Configure Default consent" to "Enabled" with "Send all data" selected for "Consent level".

b

All Direct Access traffic must be routed through the internal network.

CM-6 - Medium - CCI-000366 - V-63573 - SV-78063r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000045

Vuln IDs

V-63573

Rule IDs

SV-78063r1_rule

Routing all Direct Access traffic through the internal network allows monitoring and prevents split tunneling.

Checks: C-64323r1_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\TCPIP\v6Transition\ Value Name: Force_Tunneling Value Type: REG_SZ Value: Enabled

Fix: F-69503r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Network >> Network Connections >> "Route all traffic through the internal network" to "Enabled: Enabled State".

b

The system must be configured to permit the default consent levels of Windows Error Reporting to override any other consent policy setting.

SI-11 - Medium - CCI-001312 - V-63575 - SV-78065r1_rule

RMF Control

SI-11

Severity

M

CCI

Version

WN10-ER-000090

Vuln IDs

V-63575

Rule IDs

SV-78065r1_rule

This setting determines the behavior of the "Configure Default Consent" setting in relation to custom consent settings. Enabling this allows the default consent levels of Windows Error Reporting to always override any other consent policy setting.

Checks: C-64325r1_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 Error Reporting\Consent\ Value Name: DefaultOverrideBehavior Value Type: REG_DWORD Value: 1

Fix: F-69505r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Error Reporting >> Consent >> "Ignore custom consent settings" to "Enabled".

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 Certificate must be installed into the Trusted Root Store.

IA-5 - Medium - CCI-000185 - V-63579 - SV-78069r1_rule

RMF Control

IA-5

Severity

M

CCI

Version

WN10-PK-000005

Vuln IDs

V-63579

Rule IDs

SV-78069r1_rule

To ensure secure DoD websites and DoD-signed code are properly validated, the system must trust the DoD Root CA 2. The DoD root certificate will ensure that the trust chain is established for server certificates issued from the DoD CA.

Checks: C-64329r1_chk

Verify the DoD Root CA 2 certificate is installed as a Trusted Root Certification Authority using 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". Search for "DoD Root CA 2" under "Issued To" in the center pane. If there is no entry for "DoD Root CA 2", this is a finding. Select DoD Root CA 2. Right click and select "Open". Select the "Details" Tab. Scroll to the bottom and select "Thumbprint Algorithm". Verify the Value is "sha1". If the value for "Thumbprint Algorithm" is not "sha1", this is a finding. Next select "Thumbprint". If the value for the "Thumbprint" field is not "8C:94:1B:34:EA:1E:A6:ED:9A:E2:BC:54:CF:68:72:52:B4:C9:B5:61", this is a finding. The thumbprint referenced applies to NIPRNet, see PKE documentation for other networks.

Fix: F-69509r1_fix

Install the DoD root CA 2 certificate. The InstallRoot tool is available on IASE at http://iase.disa.mil/pki-pke/function_pages/tools.html.

b

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

CM-6 - Medium - CCI-000366 - V-63581 - SV-78071r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000055

Vuln IDs

V-63581

Rule IDs

SV-78071r1_rule

Multiple network connections can provide additional attack vectors to a system and must be limited.

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 CA Root Certificate must be installed into the Trusted Root Store.

IA-5 - Medium - CCI-000185 - V-63583 - SV-78073r1_rule

RMF Control

IA-5

Severity

M

CCI

Version

WN10-PK-000010

Vuln IDs

V-63583

Rule IDs

SV-78073r1_rule

To ensure secure websites protected with ECA server certificates on NIPRNet are properly validated, the system must trust the ECA Root CA 2. The ECA root certificate will ensure the trust chain is established for server certificates issued from the External CA. This requirement only applies to NIPRNet systems.

Checks: C-64333r1_chk

Verify the ECA Root CA 2 certificate is installed on NIPRNet systems as a Trusted Root Certification Authority using 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". Search for "ECA Root CA 2" under "Issued To" in the center pane. If there is no entry for "ECA Root CA 2", this is a finding. Select "ECA Root CA 2". Right click and select "Open". Select the "Details" Tab. Scroll to the bottom and select "Thumbprint Algorithm". Verify the Value is "sha1". If the value for Thumbprint Algorithm is not "sha1", this is a finding. Next select "Thumbprint". If the value for the "Thumbprint" field is not "c3:13:f9:19:a6:ed:4e:0e:84:51:af:a9:30:fb:41:9a:20:f1:81:e4", this is a finding.

Fix: F-69513r1_fix

Install the ECA root CA 2 certificate on NIPRNet systems only. The InstallRoot tool is available on IASE at http://iase.disa.mil/pki-pke/function_pages/tools.html.

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 1 to DoD Root CA 2 cross certificate must be installed into the Untrusted Certificates Store.

IA-5 - Medium - CCI-000185 - V-63587 - SV-78077r1_rule

RMF Control

IA-5

Severity

M

CCI

Version

WN10-PK-000015

Vuln IDs

V-63587

Rule IDs

SV-78077r1_rule

To ensure users do not experience denial of service on NIPRNet when performing certificate-based authentication to DoD websites due to the system chaining to a root other than DoD Root CA 2, the DoD Interoperability Root CA 1 to DoD Root CA 2 cross certificate must be installed in the Untrusted Certificate Store. This requirement only applies to NIPRNet systems.

Checks: C-64337r1_chk

Verify the DoD Root CA 2 certificate issued by DoD Interoperability Root CA 1 is installed on NIPRNet systems as an Untrusted Certificate using 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". Search in the center pane for "DoD Root CA 2" under "Issued To" with "DoD Interoperability Root CA 1" as "Issued By". If there is no entry for "DoD Root CA 2", this is a finding. Select "DoD Root CA 2". Right click and select "Open". Select the "Details" Tab. Scroll to the bottom and select "Thumbprint Algorithm". Verify the Value is "sha1". If the value for "Thumbprint Algorithm" is not "sha1", this is a finding. Next select "Thumbprint". If the value for the "Thumbprint" field is not "99:c4:94:ec:e4:fc:09:3e:ee:13:c4:d6:5b:1b:1e:01:b9:b5:d4:34", this is a finding.

Fix: F-69517r1_fix

Install the DoD Interoperability Root CA 1 to DoD Root CA 2 cross certificate on NIPRNet systems only. Administrators should run the Federal Bridge Certification Authority (FBCA) Cross-Certificate Removal Tool once as an administrator and once as the current user. The FBCA Cross-Certificate Remover tool and user guide is available on IASE at http://iase.disa.mil/pki-pke/function_pages/tools.html.

b

The US DoD CCEB Interoperability Root CA 1 to DoD Root CA 2 cross-certificate must be installed into the Untrusted Certificates Store.

IA-5 - Medium - CCI-000185 - V-63589 - SV-78079r1_rule

RMF Control

IA-5

Severity

M

CCI

Version

WN10-PK-000020

Vuln IDs

V-63589

Rule IDs

SV-78079r1_rule

To ensure users do not experience denial of service on NIPRNet when performing certificate-based authentication to DoD websites due to the system chaining to a root other than DoD Root CA 2, the US DoD CCEB Interoperability Root CA 1 to DoD Root CA 2 cross-certificate must be installed in the Untrusted Certificate Store. This requirement only applies to NIPRNet systems.

Checks: C-64339r1_chk

Verify the DoD Root CA 2 certificate issued by US DoD CCEB Interoperability Root CA 1 is installed on NIPRNet systems as an Untrusted Certificate using 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". Search in the center pane for "DoD Root CA 2" under "Issued To" with "US DoD CCEB Interoperability Root CA 1" as "Issued By". If there is no entry for this certificate, this is a finding. Select the certificate. Right click and select "Open". Select the "Details" Tab. Scroll to the bottom and select "Thumbprint Algorithm". Verify the Value is "sha1". If the value for "Thumbprint Algorithm" is not "sha1", this is a finding. Next select "Thumbprint". If the value for the "Thumbprint" field is not "7d:a8:e8:42:96:ee:23:88:18:ee:42:72:87:77:45:08:b2:6d:09:4a", this is a finding.

Fix: F-69519r1_fix

Install the US DoD CCEB Interoperability Root CA 1 to DoD Root CA 2 cross-certificate on NIPRNet systems only. Administrators should run the Federal Bridge Certification Authority (FBCA) Cross-Certificate Removal Tool once as an administrator and once as the current user. The FBCA Cross-Certificate Remover tool and user guide is available on IASE at http://iase.disa.mil/pki-pke/function_pages/tools.html.

b

Wi-Fi Sense must be disabled.

CM-6 - Medium - CCI-000366 - V-63591 - SV-78081r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000065

Vuln IDs

V-63591

Rule IDs

SV-78081r1_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-64341r1_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\WcmSvc\wifinetworkmanager\config\ Value Name: AutoConnectAllowedOEM Type: REG_DWORD Value: 0

Fix: F-69521r1_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".

b

Default permissions for the HKEY_LOCAL_MACHINE registry hive must be maintained.

AC-6 - Medium - CCI-002235 - V-63593 - SV-78083r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-RG-000005

Vuln IDs

V-63593

Rule IDs

SV-78083r1_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-64343r1_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 samples under the noted keys may also be sampled. There may be some instances where non-privileged groups have greater than Read permission. If the defaults have not been changed, these are not a finding.

Fix: F-69523r1_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

a

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

CM-6 - Low - CCI-000366 - V-63595 - SV-78085r3_rule

RMF Control

CM-6

Severity

L

CCI

Version

WN10-CC-000070

Vuln IDs

V-63595

Rule IDs

SV-78085r3_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-69337r3_chk

Confirm Virtualization Based Security is enabled and running on domain-joined systems with Secure Boot or Secure Boot and DMA Protection. For standalone systems, this is NA. 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 TechNet article on Credential Guard, including system requirement details, can be found at the following link. https://technet.microsoft.com/en-us/library/mt483740%28v=vs.85%29.aspx

Fix: F-74851r1_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. 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. A Microsoft TechNet article on Credential Guard, including system requirement details, can be found at the following link. https://technet.microsoft.com/en-us/library/mt483740%28v=vs.85%29.aspx

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-78087r1_rule

RMF Control

SC-3

Severity

M

CCI

Version

WN10-RG-000010

Vuln IDs

V-63597

Rule IDs

SV-78087r1_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-64347r1_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: 0 This setting may cause issues with some network scanning tools if local administrative accounts are used remotely. Scans should use domain accounts where possible. If a local administrative account must be used, temporarily enabling the privileged token by configuring the registry value to 1 may be required.

Fix: F-69527r1_fix

If the system is not a member of a domain, this is NA. Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ Value Name: LocalAccountTokenFilterPolicy Value Type: REG_DWORD Value: 0

a

Credential Guard must be running on domain-joined systems.

CM-6 - Low - CCI-000366 - V-63599 - SV-78089r3_rule

RMF Control

CM-6

Severity

L

CCI

Version

WN10-CC-000075

Vuln IDs

V-63599

Rule IDs

SV-78089r3_rule

Credential Guard uses virtualization based security to protect secrets 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-69335r4_chk

Confirm Credential Guard is running on domain-joined systems. For standalone systems, this is NA. For those devices that support Credential Guard, this feature must be enabled. For devices that do not support it, there is currently an enterprise risk acceptance in effect, thus this check is currently categorized as a CAT III. 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: 1 A Microsoft TechNet article on Credential Guard, including system requirement details, can be found at the following link. https://technet.microsoft.com/en-us/library/mt483740%28v=vs.85%29.aspx

Fix: F-71521r1_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. 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:". A Microsoft TechNet article on Credential Guard, including system requirement details, can be found at the following link. https://technet.microsoft.com/en-us/library/mt483740%28v=vs.85%29.aspx

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".

a

Virtualization-based protection of code integrity must be enabled on domain-joined systems.

CM-6 - Low - CCI-000366 - V-63603 - SV-78093r3_rule

RMF Control

CM-6

Severity

L

CCI

Version

WN10-CC-000080

Vuln IDs

V-63603

Rule IDs

SV-78093r3_rule

Virtualization based protection of code integrity enforces kernel mode memory protections as well as protecting Code Integrity validation paths. This isolates the processes from the rest of the operating system and can only be accessed by privileged system software.

Checks: C-69339r2_chk

Confirm virtualization-based protection of code integrity is running on domain-joined systems. For standalone systems, this is NA. For those devices that support the virtualization based security (VBS) feature for protection of code integrity, this must be enabled. If the system meets the hardware, firmware and compatible device driver dependencies for enabling virtualization based protection of code integrity but it is not enabled, this is a CAT III finding. Virtualization based security 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 "2" (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 "Hypervisor enforced Code Integrity", 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: HypervisorEnforcedCodeIntegrity Value Type: REG_DWORD Value: 1

Fix: F-71523r1_fix

For standalone systems, this is NA. Virtualization based security 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 "Enable Virtualization Based Protection of Code Integrity" selected. This selection is under the same policy that enables Credential Guard.

b

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

CM-6 - Medium - CCI-000366 - V-63607 - SV-78097r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000085

Vuln IDs

V-63607

Rule IDs

SV-78097r1_rule

Compromised boot drivers can introduce malware prior to protection mechanisms that load after initialization. The Early Launch Antimalware driver can limit allowed drivers based on classifications determined by the malware protection application. At a minimum, drivers determined to be bad must not be allowed.

Checks: C-64357r1_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 is not 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 (or if the Value Name does not exist) 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-69537r1_fix

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 this needs to be corrected or a more secure setting is desired, configure the policy value for Computer Configuration >> Administrative Templates >> System >> Early Launch Antimalware >> "Boot-Start Driver Initialization Policy" to "Not Configured" or "Enabled" with any option other than "All" 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

Group Policies must be refreshed in the background if the user is logged on.

CM-6 - Medium - CCI-000366 - V-63613 - SV-78103r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000095

Vuln IDs

V-63613

Rule IDs

SV-78103r1_rule

If this setting is enabled, then Group Policy settings are not refreshed while a user is currently logged on. This could lead to instances when a user does not have the latest changes to a policy applied and is therefore operating in an insecure context.

Checks: C-64363r1_chk

The default behavior is for group policy to refresh in the back ground. If the following registry value name does not exist, this is not a finding. (This is the expected result from not configuring the policy noted in the Fix section. Selecting "Disabled" for the policy will also result in no registry value). If the following registry value name exists with a value of "1", this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\Current Version\Policies\System\ Value Name: DisableBkGndGroupPolicy Value Type: REG_DWORD Value: (This registry entry will not exist if configured correctly.)

Fix: F-69543r1_fix

The default behavior is for group policy to refresh in the back ground. If this needs to be corrected, configure the policy value for Computer Configuration >> Administrative Templates >> System >> Group Policy >> "Turn off background refresh of Group Policy" to "Not Configured". (Selecting "Disabled" results in the same outcome as "Not Configured", the registry value will not exist.)

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

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

CM-7 - Medium - CCI-000381 - V-63631 - SV-78121r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-CC-000125

Vuln IDs

V-63631

Rule IDs

SV-78121r1_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 unauthorized personnel.

Checks: C-64381r1_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: DontEnumerateConnectedUsers Value Type: REG_DWORD Value: 1

Fix: F-69561r1_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 >> "Do not enumerate connected users on domain-joined computers" 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

Signing in using a PIN must be turned off.

CM-7 - Medium - CCI-000381 - V-63637 - SV-78127r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-CC-000135

Vuln IDs

V-63637

Rule IDs

SV-78127r1_rule

Strong sign-on must be used to protect a system. The PIN feature is limited to 4 numbers and caches the domain password in the system vault.

Checks: C-64387r1_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: 0

Fix: F-69569r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Logon >> "Turn on convenience PIN sign-in" to "Disabled".

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

The system must be configured to block untrusted fonts from loading.

CM-6 - Medium - CCI-000366 - V-63641 - SV-78131r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000140

Vuln IDs

V-63641

Rule IDs

SV-78131r1_rule

Attackers may use fonts that include malicious code to compromise a system. This setting will prevent untrusted fonts, processed by the Graphics Device Interface (GDI), from loading if installed outside of the %windir%/Fonts directory.

Checks: C-64391r1_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\MitigationOptions\ Value Name: MitigationOptions_FontBocking Type: REG_SZ Value: 1000000000000 (w/ 12 zeros)

Fix: F-69571r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Mitigation Options >> "Untrusted Font Blocking" to "Enabled" with "Block untrusted fonts and log events" selected in "Mitigation Options".

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

Client computers must be required to authenticate for RPC communication.

IA-3 - Medium - CCI-001967 - V-63655 - SV-78145r1_rule

RMF Control

IA-3

Severity

M

CCI

CCI-001967

Version

WN10-CC-000160

Vuln IDs

V-63655

Rule IDs

SV-78145r1_rule

Configuring RPC to require authentication to the RPC Endpoint Mapper will force clients to provide authentication before RPC communication is established.

Checks: C-64403r1_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: EnableAuthEpResolution Value Type: REG_DWORD Value: 1

Fix: F-69583r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Remote Procedure Call >> "Enable RPC Endpoint Mapper Client Authentication" to "Enabled.

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-78149r1_rule

RMF Control

CM-6

Severity

L

CCI

Version

WN10-CC-000170

Vuln IDs

V-63659

Rule IDs

SV-78149r1_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-64407r1_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: MSAOptional Value Type: REG_DWORD Value: 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-78159r1_rule

RMF Control

AC-11

Severity

M

CCI

CCI-000057

Version

WN10-SO-000070

Vuln IDs

V-63669

Rule IDs

SV-78159r1_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-64417r1_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)

Fix: F-69597r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Interactive logon: Machine inactivity limit" to "900" seconds".

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-78165r1_rule

RMF Control

AC-8

Severity

M

CCI

CCI-000048

Version

WN10-SO-000075

Vuln IDs

V-63675

Rule IDs

SV-78165r1_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-64421r1_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. Any OS versions that do not support the full text version must state the following: "I've read & consent to terms in IS user agreem't."

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 when available must be enabled for facial recognition.

CM-6 - Medium - CCI-000366 - V-63677 - SV-78167r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000195

Vuln IDs

V-63677

Rule IDs

SV-78167r1_rule

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

Checks: C-64425r1_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\Biometrics\FacialFeatures\ Value Name: EnhancedAntiSpoofing Value Type: REG_DWORD Value: 1

Fix: F-69605r2_fix

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

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 be configured to the lowest level of data sent to Microsoft.

CM-6 - Medium - CCI-000366 - V-63683 - SV-78173r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000205

Vuln IDs

V-63683

Rule IDs

SV-78173r1_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.

Checks: C-64431r1_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: 0 Windows 10 Professional may have a value of 1. The value for Off [Enterprise Only] implements the same limitations as Basic in Windows 10 Professional.

Fix: F-69611r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Data Collection and Preview Builds>> "Allow Telemetry" to "Enabled" with "0 - Off [Enterprise Only]" selected in "Options:". Windows 10 Professional may be configured to Basic. The value for Off [Enterprise Only] implements the same limitations as Basic in Windows 10 Professional.

b

The Windows SmartScreen must be configured to require approval from an administrator before running downloaded unknown software.

CM-7 - Medium - CCI-000381 - V-63685 - SV-78175r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-CC-000210

Vuln IDs

V-63685

Rule IDs

SV-78175r1_rule

Windows SmartScreen helps protect systems from programs downloaded from the internet that may be malicious. Requiring administrator approval before running unknown software will prevent users from executing potentially malicious programs.

Checks: C-64435r1_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: EnableSmartScreen Value Type: REG_DWORD Value: 2

Fix: F-69613r1_fix

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-78181r1_rule

RMF Control

SC-5

Severity

L

CCI

CCI-002385

Version

WN10-CC-000220

Vuln IDs

V-63691

Rule IDs

SV-78181r1_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-64439r1_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: NoHeapTerminationOnCorruption Value Type: REG_DWORD Value: 0

Fix: F-69619r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> File Explorer >> "Turn off heap termination on corruption" to "Disabled".

a

Domain Controller authentication must not be required to unlock the workstation.

CM-6 - Low - CCI-000366 - V-63693 - SV-78183r1_rule

RMF Control

CM-6

Severity

L

CCI

Version

WN10-SO-000090

Vuln IDs

V-63693

Rule IDs

SV-78183r1_rule

This setting controls the behavior of the system when there is an attempt to unlock the workstation. If this setting is enabled, the system will pass the credentials to the domain controller (if in a domain) for authentication before allowing the system to be unlocked. This may cause a denial of service if the workstation loses connectivity to the domain controller.

Checks: C-64441r1_chk

The default configuration for this setting is "Disabled". 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: ForceUnlockLogon Value Type: REG_DWORD Value: 0

Fix: F-69621r1_fix

The default configuration for this setting is "Disabled". Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Interactive logon: Require Domain Controller authentication to unlock workstation" to "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 SmartScreen filter warnings for malicious websites in Microsoft Edge.

CM-6 - Medium - CCI-000366 - V-63699 - SV-78189r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000230

Vuln IDs

V-63699

Rule IDs

SV-78189r1_rule

The 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 SmartScreen filter they could still access malicious websites.

Checks: C-64447r1_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\MicrosoftEdge\PhishingFilter\ Value Name: PreventOverride Type: REG_DWORD Value: 1

Fix: F-69627r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Edge >> "Don't allow SmartScreen Filter warning overrides" to "Enabled".

b

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

CM-6 - Medium - CCI-000366 - V-63701 - SV-78191r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000235

Vuln IDs

V-63701

Rule IDs

SV-78191r1_rule

The 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 SmartScreen filter they could still download potentially malicious files.

Checks: C-64449r1_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\MicrosoftEdge\PhishingFilter\ Value Name: PreventOverrideAppRepUnknown Type: REG_DWORD Value: 1

Fix: F-69631r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Edge >> "Don't allow SmartScreen Filter warning overrides for unverified files" to "Enabled".

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

InPrivate browsing in Microsoft Edge must be disabled.

CM-6 - Medium - CCI-000366 - V-63705 - SV-78195r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000240

Vuln IDs

V-63705

Rule IDs

SV-78195r1_rule

The InPrivate browsing feature in Microsoft Edge prevents the storing of history, cookies, temporary Internet files, or other data. Disabling this feature maintains this data for review as necessary.

Checks: C-64453r1_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\MicrosoftEdge\Main\ Value Name: AllowInPrivate Type: REG_DWORD Value: 0

Fix: F-69633r2_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Edge >> "Turn off InPrivate browsing" to "Disabled". Note: This setting is incorrectly worded in Group Policy. Configuring to "Disabled" turns off InPrivate browsing. Configuring to "Enabled" turns it on.

b

The Windows SMB client must be enabled to perform SMB packet signing when possible.

SC-8 - Medium - CCI-002418 - V-63707 - SV-78197r1_rule

RMF Control

SC-8

Severity

M

CCI

Version

WN10-SO-000105

Vuln IDs

V-63707

Rule IDs

SV-78197r1_rule

The server message block (SMB) protocol provides the basis for many network operations. If this policy is enabled, the SMB client will request packet signing when communicating with an SMB server that is enabled or required to perform SMB packet signing.

Checks: C-64455r1_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: EnableSecuritySignature Value Type: REG_DWORD Value: 1

Fix: F-69635r1_fix

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

b

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

CM-6 - Medium - CCI-000366 - V-63709 - SV-78199r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000245

Vuln IDs

V-63709

Rule IDs

SV-78199r1_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-64457r1_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\MicrosoftEdge\Main\ Value Name: FormSuggest Passwords Type: REG_SZ Value: no

Fix: F-69637r2_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Edge >> "Turn off Password Manager" to "Disabled". Note: This setting is incorrectly worded in Group Policy. Configuring to "Disabled" turns off the password manager. Configuring to "Enabled" turns it on.

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 SmartScreen filter for Microsoft Edge must be enabled.

CM-6 - Medium - CCI-000366 - V-63713 - SV-78203r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000250

Vuln IDs

V-63713

Rule IDs

SV-78203r1_rule

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

Checks: C-64461r1_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\MicrosoftEdge\PhishingFilter\ Value Name: EnabledV9 Type: REG_DWORD Value: 1

Fix: F-69641r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Edge >> "Turn off the SmartScreen Filter" to "Enabled". Note: This setting is incorrectly worded in Group Policy. Configuring to "Enabled" enforces the SmartScreen filter being turned on. Configuring to "Disabled" turns the SmartScreen filter off.

a

The amount of idle time required before suspending a session must be configured to 15 minutes or less.

SC-10 - Low - CCI-001133 - V-63715 - SV-78205r1_rule

RMF Control

SC-10

Severity

L

CCI

CCI-001133

Version

WN10-SO-000115

Vuln IDs

V-63715

Rule IDs

SV-78205r1_rule

Open sessions can increase the avenues of attack on a system. This setting is used to control when a computer disconnects an inactive SMB session. If client activity resumes, the session is automatically re-established. This protects critical and sensitive network data from exposure to unauthorized personnel with physical access to the computer.

Checks: C-64463r1_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: autodisconnect Value Type: REG_DWORD Value: 0x0000000f (15) (or less)

Fix: F-69643r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Microsoft network server: Amount of idle time required before suspending session" to "15" minutes or less.

b

The use of a hardware security device with Microsoft Passport for Work must be enabled.

CM-6 - Medium - CCI-000366 - V-63717 - SV-78207r2_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000255

Vuln IDs

V-63717

Rule IDs

SV-78207r2_rule

The use of a Trusted Platform Module (TPM) to store keys for Microsoft Passport for Work 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-66165r1_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-71525r1_fix

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. Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Passport for Work >> "Use a hardware security device" to "Enabled".

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

The minimum pin length for Microsoft Passport for Work must be 6 characters or greater.

CM-6 - Medium - CCI-000366 - V-63721 - SV-78211r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-CC-000260

Vuln IDs

V-63721

Rule IDs

SV-78211r1_rule

Microsoft Passport for Work allows the use of PINs as well as biometrics for authentication without the 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-69649r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Passport for Work >> PIN Complexity >> "Minimum PIN length" to "6" or greater.

b

The Windows SMB server must perform SMB packet signing when possible.

SC-8 - Medium - CCI-002418 - V-63723 - SV-78213r1_rule

RMF Control

SC-8

Severity

M

CCI

Version

WN10-SO-000125

Vuln IDs

V-63723

Rule IDs

SV-78213r1_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 negotiate SMB packet signing as requested by the client.

Checks: C-64471r1_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: EnableSecuritySignature Value Type: REG_DWORD Value: 1

Fix: F-69651r1_fix

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

b

The use of OneDrive for storage must be disabled.

CM-7 - Medium - CCI-000381 - V-63725 - SV-78215r1_rule

RMF Control

CM-7

Severity

M

CCI

Version

WN10-CC-000265

Vuln IDs

V-63725

Rule IDs

SV-78215r1_rule

OneDrive provides access to external services for data storage which must not be used. Enabling this setting will prevent such access from the OneDrive app, as well as from File Explorer.

Checks: C-64473r1_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\OneDrive\ Value Name: DisableFileSyncNGSC Value Type: REG_DWORD Value: 1

Fix: F-69653r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> OneDrive >> "Prevent the usage of OneDrive for file storage" to "Enabled".

a

Users must be forcibly disconnected when their logon hours expire.

SC-10 - Low - CCI-001133 - V-63727 - SV-78217r1_rule

RMF Control

SC-10

Severity

L

CCI

CCI-001133

Version

WN10-SO-000130

Vuln IDs

V-63727

Rule IDs

SV-78217r1_rule

Users must not be permitted to remain logged on to the network after they have exceeded their permitted logon hours. In many cases, this indicates that a user forgot to log off before leaving for the day. However, it may also indicate that a user is attempting unauthorized access at a time when the system may be less closely monitored. Forcibly disconnecting users when logon hours expire protects critical and sensitive network data from exposure to unauthorized personnel with physical access to the computer.

Checks: C-64477r2_chk

This is the default configuration for this setting (Enabled). 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: enableforcedlogoff Value Type: REG_DWORD Value: 1

Fix: F-69655r1_fix

This is the default configuration for this setting (Enabled). Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Microsoft network server: Disconnect clients when logon hours expire" to "Enabled".

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 service principal name (SPN) target name validation level must be configured to Accept if provided by client.

CM-6 - Medium - CCI-000366 - V-63735 - SV-78225r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-SO-000135

Vuln IDs

V-63735

Rule IDs

SV-78225r1_rule

If a service principle name (SPN) is provided by the client, it is validated against the server's list of SPNs, aiding in the prevention of spoofing.

Checks: C-64485r1_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: SmbServerNameHardeningLevel Value Type: REG_DWORD Value: 1

Fix: F-69663r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Microsoft network server: Server SPN target name validation level" to "Accept if provided by client".

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 the storage of passwords and credentials.

IA-11 - Medium - CCI-002038 - V-63753 - SV-78243r1_rule

RMF Control

IA-11

Severity

M

CCI

Version

WN10-SO-000155

Vuln IDs

V-63753

Rule IDs

SV-78243r1_rule

This setting controls the storage of passwords and credentials for network authentication on the local system. Such credentials must not be stored on the local machine as that may lead to account compromise.

Checks: C-64503r1_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: DisableDomainCreds Value Type: REG_DWORD Value: 1

Fix: F-69681r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network access: Do not allow storage of passwords and credentials for network authentication" to "Enabled".

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

The system must be configured to use the Classic security model.

SC-4 - Medium - CCI-001090 - V-63761 - SV-78251r1_rule

RMF Control

SC-4

Severity

M

CCI

Version

WN10-SO-000170

Vuln IDs

V-63761

Rule IDs

SV-78251r1_rule

Windows includes two network-sharing security models - Classic and Guest only. With the Classic model, local accounts must be password protected; otherwise, anyone can use guest user accounts to access shared system resources.

Checks: C-64511r1_chk

This is the default configuration for this setting (Disabled). 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: forceguest Value Type: REG_DWORD Value: 0

Fix: F-69689r1_fix

This is the default configuration for this setting (Disabled). Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network access: Sharing and security model for local accounts" to "Classic - local users authenticate as themselves".

b

Services using Local System that use Negotiate when reverting to NTLM authentication must use the computer identity vs. authenticating anonymously.

IA-3 - Medium - CCI-000778 - V-63763 - SV-78253r1_rule

RMF Control

IA-3

Severity

M

CCI

CCI-000778

Version

WN10-SO-000175

Vuln IDs

V-63763

Rule IDs

SV-78253r1_rule

Services using Local System that use Negotiate when reverting to NTLM authentication may gain unauthorized access if allowed to authenticate anonymously vs. using the computer identity.

Checks: C-64513r1_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: UseMachineId Value Type: REG_DWORD Value: 1

Fix: F-69691r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network security: Allow Local System to use computer identity for NTLM" 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".

b

The system must be configured to force users to log off when their allowed logon hours expire.

SC-10 - Medium - CCI-001133 - V-63799 - SV-78289r1_rule

RMF Control

SC-10

Severity

M

CCI

CCI-001133

Version

WN10-SO-000200

Vuln IDs

V-63799

Rule IDs

SV-78289r1_rule

Limiting logon hours can help protect data by only allowing access during specified times. This setting controls whether or not users are forced to log off when their allowed logon hours expire. If logon hours are set for users, then this must be enforced.

Checks: C-64549r2_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 security: Force logoff when logon hours expire" is not set to "Enabled", this is a finding.

Fix: F-69727r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network security: Force logoff when logon hours expire" 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).

c

The Recovery Console option must be set to prevent automatic logon to the system.

CM-6 - High - CCI-000366 - V-63809 - SV-78299r1_rule

RMF Control

CM-6

Severity

H

CCI

Version

WN10-SO-000225

Vuln IDs

V-63809

Rule IDs

SV-78299r1_rule

If this option is enabled, the Recovery Console does not require a password and automatically logs on to the system. This could allow unauthorized administrative access to the system.

Checks: C-64559r1_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\Setup\RecoveryConsole\ Value Name: SecurityLevel Value Type: REG_DWORD Value: 0

Fix: F-69737r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Recovery console: Allow automatic administrative logon" to "Disabled".

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".

b

The system must be configured to require case insensitivity for non-Windows subsystems.

CM-6 - Medium - CCI-000366 - V-63813 - SV-78303r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-SO-000235

Vuln IDs

V-63813

Rule IDs

SV-78303r1_rule

This setting controls the behavior of non-Windows subsystems when dealing with the case of arguments or commands. Case sensitivity could lead to the access of files or commands that must be restricted. To prevent this from happening, case insensitivity restrictions must be required.

Checks: C-64563r1_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\Kernel\ Value Name: ObCaseInsensitive Value Type: REG_DWORD Value: 1

Fix: F-69741r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "System objects: Require case insensitivity for non-Windows subsystems" 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".

b

A screen saver must be enabled on the system.

AC-11 - Medium - CCI-000060 - V-63835 - SV-78325r1_rule

RMF Control

AC-11

Severity

M

CCI

CCI-000060

Version

WN10-UC-000005

Vuln IDs

V-63835

Rule IDs

SV-78325r1_rule

Unattended systems are susceptible to unauthorized use and must be locked when unattended. Enabling a password-protected screen saver to engage after a specified period of time helps protects critical and sensitive data from exposure to unauthorized personnel with physical access to the computer.

Checks: C-64585r1_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\Control Panel\Desktop\ Value Name: ScreenSaveActive Type: REG_SZ Value: 1 Applications requiring continuous, real-time screen display (e.g., network management products) require the following and must be documented with the ISSO. -The logon session does not have administrator rights. -The display station (e.g., keyboard, monitor, etc.) is located in a controlled access area.

Fix: F-69763r1_fix

Configure the policy value for User Configuration >> Administrative Templates >> Control Panel >> Personalization >> "Enable screen saver" to "Enabled".

b

The screen saver must be password protected.

AC-11 - Medium - CCI-000056 - V-63837 - SV-78327r1_rule

RMF Control

AC-11

Severity

M

CCI

CCI-000056

Version

WN10-UC-000010

Vuln IDs

V-63837

Rule IDs

SV-78327r1_rule

Unattended systems are susceptible to unauthorized use and must be locked when unattended. Enabling a password protected screen saver to engage after a specified period of time helps protects critical and sensitive data from exposure to unauthorized personnel with physical access to the computer.

Checks: C-64587r1_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\Control Panel\Desktop\ Value Name: ScreenSaverIsSecure Value Type: REG_SZ Value: 1

Fix: F-69765r1_fix

Configure the policy value for User Configuration >> Administrative Templates >> Control Panel >> Personalization >> "Password protect the screen saver" 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-78331r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-UC-000020

Vuln IDs

V-63841

Rule IDs

SV-78331r1_rule

Preserving zone of origin (internet, intranet, local, restricted) information on file attachments allows Windows to determine risk.

Checks: C-64591r1_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\Microsoft\Windows\CurrentVersion\Policies\Attachments\ Value Name: SaveZoneInformation Value Type: REG_DWORD Value: 2

Fix: F-69769r1_fix

Configure the policy value for User Configuration >> Administrative Templates >> Windows Components >> Attachment Manager >> "Do not preserve zone information in file attachments" to "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 group.

AC-3 - Medium - CCI-000213 - V-63845 - SV-78335r1_rule

RMF Control

AC-3

Severity

M

CCI

Version

WN10-UR-000010

Vuln IDs

V-63845

Rule IDs

SV-78335r1_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-64595r1_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

Fix: F-69773r1_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

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 Adjust memory quotas for a process user right must only be assigned to Administrators, Local Service, and Network Service.

AC-6 - Medium - CCI-002235 - V-63849 - SV-78339r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000020

Vuln IDs

V-63849

Rule IDs

SV-78339r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Adjust memory quotas for a process" user right can adjust memory that is available to processes, and could be used in a denial of service (DoS) attack.

Checks: C-64599r1_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 "Adjust memory quotas for a process" user right, this is a finding: Administrators LOCAL SERVICE NETWORK SERVICE

Fix: F-69777r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Adjust memory quotas for a process" to only include the following groups or accounts: Administrators LOCAL SERVICE NETWORK SERVICE

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-78341r1_rule

RMF Control

AC-3

Severity

M

CCI

Version

WN10-UR-000025

Vuln IDs

V-63851

Rule IDs

SV-78341r1_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-64601r1_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 Systems dedicated to managing Active Directory (AD admin platforms), must only allow Administrators, removing the Users group.

Fix: F-69779r1_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 Systems dedicated to managing Active Directory (AD admin platforms), must only allow Administrators, removing the Users group.

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-78355r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000060

Vuln IDs

V-63865

Rule IDs

SV-78355r1_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-64615r1_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

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-78361r2_rule

RMF Control

AC-3

Severity

M

CCI

Version

WN10-UR-000070

Vuln IDs

V-63871

Rule IDs

SV-78361r2_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-64621r2_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 Systems dedicated to the management of Active Directory (AD admin platforms, see V-36436 in the Active Directory Domain STIG) are exempt from denying the Enterprise Admins and Domain Admins groups. Note: "Local account" is a built-in security group used to assign user rights and permissions to all local accounts.

Fix: F-69799r2_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 Systems dedicated to the management of Active Directory (AD admin platforms, see V-36436 in the Active Directory Domain STIG) are exempt from denying the Enterprise Admins and Domain Admins groups. 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 domain-joined workstations must be configured to prevent access from highly privileged domain accounts.

AC-3 - Medium - CCI-000213 - V-63875 - SV-78365r1_rule

RMF Control

AC-3

Severity

M

CCI

Version

WN10-UR-000080

Vuln IDs

V-63875

Rule IDs

SV-78365r1_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-64625r1_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 Admin Group Domain Admin Group

Fix: F-69803r1_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 Admin Group Domain Admin 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-78367r1_rule

RMF Control

AC-3

Severity

M

CCI

Version

WN10-UR-000085

Vuln IDs

V-63877

Rule IDs

SV-78367r1_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-64627r1_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 Workstations dedicated to the management of Active Directory (see V-36436 in the Active Directory Domain STIG) are exempt from this. All Systems: Guests Group

Fix: F-69805r1_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 Workstations dedicated to the management of Active Directory (see V-36436 in the Active Directory Domain STIG) are exempt from this. All Systems: Guests Group

b

The Deny log on through Remote Desktop Services user right on 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-78369r2_rule

RMF Control

AC-3

Severity

M

CCI

Version

WN10-UR-000090

Vuln IDs

V-63879

Rule IDs

SV-78369r2_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-64629r2_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 Admin group Domain Admin group Local account (see Note below) All Systems: Guests group Systems dedicated to the management of Active Directory (AD admin platforms, see V-36436 in the Active Directory Domain STIG) are exempt from denying the Enterprise Admins and Domain Admins groups. Note: "Local account" is a built-in security group used to assign user rights and permissions to all local accounts.

Fix: F-69807r2_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 Systems dedicated to the management of Active Directory (AD admin platforms, see V-36436 in the Active Directory Domain STIG) are exempt from denying the Enterprise Admins and Domain Admins groups. 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 Generate security audits user right must only be assigned to Local Service and Network Service.

AC-6 - Medium - CCI-002235 - V-63887 - SV-78377r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000105

Vuln IDs

V-63887

Rule IDs

SV-78377r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. The "Generate security audits" user right specifies users and processes that can generate Security Log audit records, which must only be the system service accounts defined.

Checks: C-64637r1_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 "Generate security audits" user right, this is a finding: LOCAL SERVICE NETWORK SERVICE

Fix: F-69815r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Generate security audits" to only include the following groups or accounts: LOCAL SERVICE NETWORK SERVICE

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 Increase scheduling priority user right must only be assigned to the Administrators group.

AC-6 - Medium - CCI-002235 - V-63891 - SV-78381r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000115

Vuln IDs

V-63891

Rule IDs

SV-78381r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Increase scheduling priority" user right can change a scheduling priority causing performance issues or a DoS.

Checks: C-64641r1_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 "Increase scheduling priority" user right, this is a finding: Administrators

Fix: F-69819r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Increase scheduling priority" to only include the following groups or accounts: Administrators

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 an object label user right must not be assigned to any groups or accounts.

AC-6 - Medium - CCI-002235 - V-63929 - SV-78419r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000135

Vuln IDs

V-63929

Rule IDs

SV-78419r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Modify an object label" user right can change the integrity label of an object. This could potentially be used to execute code at a higher privilege.

Checks: C-64679r1_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 "Modify an object label" user right, this is a finding.

Fix: F-69857r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Modify an object label" to be defined but containing no entries (blank).

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 Replace a process level token user right must only be assigned to Local Service and Network Service.

AC-6 - Medium - CCI-002235 - V-63937 - SV-78427r1_rule

RMF Control

AC-6

Severity

M

CCI

Version

WN10-UR-000155

Vuln IDs

V-63937

Rule IDs

SV-78427r1_rule

Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. The "Replace a process level token" user right allows one process or service to start another process or service with a different security access token. A user with this right could use this to impersonate another account.

Checks: C-64687r1_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 "Replace a process level token" user right, this is a finding: LOCAL SERVICE NETWORK SERVICE

Fix: F-69865r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Replace a process level token" to only include the following groups or accounts: LOCAL SERVICE NETWORK SERVICE

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

b

The machine account lockout threshold must be set to 10 on systems with BitLocker enabled.

CM-6 - Medium - CCI-000366 - V-63957 - SV-78447r1_rule

RMF Control

CM-6

Severity

M

CCI

Version

WN10-SO-000065

Vuln IDs

V-63957

Rule IDs

SV-78447r1_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 should 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-64709r1_chk

Verify whether BitLocker is enabled for the OS volumes in "BitLocker Drive Encryption" in Control Panel. If BitLocker is not enabled, 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: MaxDevicePasswordFailedAttempts Value Type: REG_DWORD Value: 0x0000000a (10)

Fix: F-69887r1_fix

If BitLocker is enabled for the OS volumes, configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Interactive logon: Machine account lockout threshold" to "10" invalid logon attempts.

a

Windows Update must not obtain updates from other PCs on the Internet.

CM-6 - Low - CCI-000366 - V-65681 - SV-80171r1_rule

RMF Control

CM-6

Severity

L

CCI

Version

WN10-CC-000206

Vuln IDs

V-65681

Rule IDs

SV-80171r1_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 my local network" or "PCs on my local network, and PCs 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-66255r1_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: 0 (Disabled), 1 (Peers on same NAT only) or 2 (Local Network / Private Peering) A value of 3 (Internet Peering) would be a finding.

Fix: F-71641r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Delivery Optimization >> "Download Mode" to "Enabled" with any option except "Internet" selected. Available options include: None, 0 = Disabled LAN, 1 = Peers on same NAT only

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.

AU-3 - Medium - CCI-000135 - V-68819 - SV-83411r1_rule

RMF Control

AU-3

Severity

M

CCI

CCI-000135

Version

WN10-CC-000326

Vuln IDs

V-68819

Rule IDs

SV-83411r1_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-69307r1_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".

b

PowerShell script block invocation logging must be enabled.

AU-3 - Medium - CCI-000135 - V-68821 - SV-83413r1_rule

RMF Control

AU-3

Severity

M

CCI

CCI-000135

Version

WN10-CC-000327

Vuln IDs

V-68821

Rule IDs

SV-83413r1_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. Additionally, enabling invocation logging will log events when the invocation of commands and scripts start or stop. This can provide additional detail when malware has run on a system. This may result in a high volume of events.

Checks: C-69309r1_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: EnableScriptBlockInvocationLogging Value Type: REG_DWORD Value: 1

Fix: F-74991r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows PowerShell >> "Turn on PowerShell Script Block Logging" to "Enabled" with "Log script block invocation start / stop events:" selected.

c

Data Execution Prevention (DEP) must be configured to at least OptOut.

SI-16 - High - CCI-002824 - V-68845 - SV-83439r1_rule

RMF Control

SI-16

Severity

H

CCI

Version

WN10-00-000145

Vuln IDs

V-68845

Rule IDs

SV-83439r1_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-69315r4_chk

If DEP is configured through the Enhanced Mitigation Experience Toolkit (EMET) (V-63407), this is NA. 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-75017r1_fix

Configure DEP to at least OptOut. 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. Note: Suspend BitLocker before making changes to the DEP configuration. 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 turned on.

SI-16 - High - CCI-002824 - V-68849 - SV-83445r1_rule

RMF Control

SI-16

Severity

H

CCI