Windows 10 V2R3 (SCAP)

b

Domain-joined systems must use Windows 10 Enterprise Edition 64-bit version.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-00-000005
Vuln IDs: V-220697
Rule IDs: SV-220697r569187_rule

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

Fix: F-22401r554577_fix

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

b

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

RMF Control: SC-28
Severity: M
CCI: CCI-001199
Version: WN10-00-000030
Vuln IDs: V-220702
Rule IDs: SV-220702r569228_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.

Fix: F-22406r554592_fix

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

c

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

RMF Control: CM-6
Severity: H
CCI: CCI-000366
Version: WN10-00-000040
Vuln IDs: V-220706
Rule IDs: SV-220706r646212_rule

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

Fix: F-22410r646211_fix

Update systems on the Semi-Annual Channel to "Microsoft Windows Version 1909 (OS Build 18363.0)" or greater. It is recommended systems be upgraded to the most recently released version. Special-purpose systems using the Long-Term Servicing Branch\Channel (LTSC\B) may be at the following versions: v1507 (Build 10240) v1607 (Build 14393) v1809 (Build 17763)

c

Local volumes must be formatted using NTFS.

RMF Control: AC-3
Severity: H
CCI: CCI-000213
Version: WN10-00-000050
Vuln IDs: V-220708
Rule IDs: SV-220708r569187_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.

Fix: F-22412r554610_fix

Format all local volumes to use NTFS.

b

Accounts must be configured to require password expiration.

RMF Control: IA-5
Severity: M
CCI: CCI-000199
Version: WN10-00-000090
Vuln IDs: V-220716
Rule IDs: SV-220716r569187_rule

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

Fix: F-22420r554634_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.

c

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

RMF Control: CM-7
Severity: H
CCI: CCI-000381
Version: WN10-00-000100
Vuln IDs: V-220718
Rule IDs: SV-220718r569187_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.

Fix: F-22422r554640_fix

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

b

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

RMF Control: CM-7
Severity: M
CCI: CCI-000382
Version: WN10-00-000105
Vuln IDs: V-220719
Rule IDs: SV-220719r569187_rule

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

Fix: F-22423r554643_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.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN10-00-000110
Vuln IDs: V-220720
Rule IDs: SV-220720r569187_rule

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

Fix: F-22424r554646_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.

RMF Control: CM-7
Severity: M
CCI: CCI-000382
Version: WN10-00-000115
Vuln IDs: V-220721
Rule IDs: SV-220721r569187_rule

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

Fix: F-22425r554649_fix

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

b

The TFTP Client must not be installed on the system.

RMF Control: CM-7
Severity: M
CCI: CCI-000382
Version: WN10-00-000120
Vuln IDs: V-220722
Rule IDs: SV-220722r569187_rule

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

Fix: F-22426r554652_fix

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

c

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

RMF Control: SI-16
Severity: H
CCI: CCI-002824
Version: WN10-00-000145
Vuln IDs: V-220726
Rule IDs: SV-220726r569187_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.

Fix: F-22430r554664_fix

Configure DEP to at least OptOut. Note: Suspend BitLocker before making changes to the DEP configuration. Open a command prompt (cmd.exe) or PowerShell with elevated privileges (Run as administrator). Enter "BCDEDIT /set {current} nx OptOut". (If using PowerShell "{current}" must be enclosed in quotes.) "AlwaysOn", a more restrictive selection, is also valid but does not allow applications that do not function properly to be opted out of DEP. Opted out exceptions can be configured in the "System Properties". Open "System" in Control Panel. Select "Advanced system settings". Click "Settings" in the "Performance" section. Select the "Data Execution Prevention" tab. Applications that are opted out are configured in the window below the selection "Turn on DEP for all programs and services except those I select:".

c

Structured Exception Handling Overwrite Protection (SEHOP) must be enabled.

RMF Control: SI-16
Severity: H
CCI: CCI-002824
Version: WN10-00-000150
Vuln IDs: V-220727
Rule IDs: SV-220727r569187_rule

Attackers are constantly looking for vulnerabilities in systems and applications. Structured Exception Handling Overwrite Protection (SEHOP) blocks exploits that use the Structured Exception Handling overwrite technique, a common buffer overflow attack.

Fix: F-22431r554667_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MS Security Guide >> "Enable Structured Exception Handling Overwrite Protection (SEHOP)" to "Enabled". This policy setting requires the installation of the SecGuide custom templates included with the STIG package. "SecGuide.admx" and "SecGuide.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

b

The Windows PowerShell 2.0 feature must be disabled on the system.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN10-00-000155
Vuln IDs: V-220728
Rule IDs: SV-220728r569187_rule

Windows PowerShell 5.0 added advanced logging features which can provide additional detail when malware has been run on a system. Disabling the Windows PowerShell 2.0 mitigates against a downgrade attack that evades the Windows PowerShell 5.0 script block logging feature.

Fix: F-22432r554670_fix

Disable "Windows PowerShell 2.0" on the system. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter the following: Disable-WindowsOptionalFeature -Online -FeatureName MicrosoftWindowsPowerShellV2Root This command should disable both "MicrosoftWindowsPowerShellV2Root" and "MicrosoftWindowsPowerShellV2" which correspond to "Windows PowerShell 2.0" and "Windows PowerShell 2.0 Engine" respectively in "Turn Windows features on or off". Alternately: Search for "Features". Select "Turn Windows features on or off". De-select "Windows PowerShell 2.0".

b

The Server Message Block (SMB) v1 protocol must be disabled on the system.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN10-00-000160
Vuln IDs: V-220729
Rule IDs: SV-220729r793187_rule

SMBv1 is a legacy protocol that uses the MD5 algorithm as part of SMB. MD5 is known to be vulnerable to a number of attacks such as collision and preimage attacks as well as not being FIPS compliant. Disabling SMBv1 support may prevent access to file or print sharing resources with systems or devices that only support SMBv1. File shares and print services hosted on Windows Server 2003 are an example, however Windows Server 2003 is no longer a supported operating system. Some older Network Attached Storage (NAS) devices may only support SMBv1.

Fix: F-22433r554673_fix

Disable the SMBv1 protocol. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter the following: Disable-WindowsOptionalFeature -Online -FeatureName SMB1Protocol Alternately: Search for "Features". Select "Turn Windows features on or off". De-select "SMB 1.0/CIFS File Sharing Support".

b

The Server Message Block (SMB) v1 protocol must be disabled on the SMB server.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN10-00-000165
Vuln IDs: V-220730
Rule IDs: SV-220730r793189_rule

SMBv1 is a legacy protocol that uses the MD5 algorithm as part of SMB. MD5 is known to be vulnerable to a number of attacks such as collision and preimage attacks as well as not being FIPS compliant. Disabling SMBv1 support may prevent access to file or print sharing resources with systems or devices that only support SMBv1. File shares and print services hosted on Windows Server 2003 are an example, however Windows Server 2003 is no longer a supported operating system. Some older network attached devices may only support SMBv1.

Fix: F-22434r554676_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MS Security Guide >> "Configure SMBv1 Server" to "Disabled". This policy setting requires the installation of the SecGuide custom templates included with the STIG package. "SecGuide.admx" and "SecGuide.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively. The system must be restarted for the change to take effect.

b

The Server Message Block (SMB) v1 protocol must be disabled on the SMB client.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN10-00-000170
Vuln IDs: V-220731
Rule IDs: SV-220731r793191_rule

SMBv1 is a legacy protocol that uses the MD5 algorithm as part of SMB. MD5 is known to be vulnerable to a number of attacks such as collision and preimage attacks as well as not being FIPS compliant. Disabling SMBv1 support may prevent access to file or print sharing resources with systems or devices that only support SMBv1. File shares and print services hosted on Windows Server 2003 are an example, however Windows Server 2003 is no longer a supported operating system. Some older network attached devices may only support SMBv1.

Fix: F-22435r554679_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MS Security Guide >> "Configure SMBv1 client driver" to "Enabled" with "Disable driver (recommended)" selected for "Configure MrxSmb10 driver". This policy setting requires the installation of the SecGuide custom templates included with the STIG package. "SecGuide.admx" and "SecGuide.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively. The system must be restarted for the changes to take effect.

b

The Secondary Logon service must be disabled on Windows 10.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN10-00-000175
Vuln IDs: V-220732
Rule IDs: SV-220732r569187_rule

The Secondary Logon service provides a means for entering alternate credentials, typically used to run commands with elevated privileges. Using privileged credentials in a standard user session can expose those credentials to theft.

Fix: F-22436r554682_fix

Configure the "Secondary Logon" service "Startup Type" to "Disabled".

b

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

RMF Control: AC-7
Severity: M
CCI: CCI-002238
Version: WN10-AC-000005
Vuln IDs: V-220739
Rule IDs: SV-220739r569187_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.

Fix: F-22443r554703_fix

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

b

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

RMF Control: AC-7
Severity: M
CCI: CCI-000044
Version: WN10-AC-000010
Vuln IDs: V-220740
Rule IDs: SV-220740r569187_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.

Fix: F-22444r554706_fix

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

b

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

RMF Control: AC-7
Severity: M
CCI: CCI-000044
Version: WN10-AC-000015
Vuln IDs: V-220741
Rule IDs: SV-220741r569187_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.

Fix: F-22445r554709_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.

RMF Control: IA-5
Severity: M
CCI: CCI-000200
Version: WN10-AC-000020
Vuln IDs: V-220742
Rule IDs: SV-220742r569187_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.

Fix: F-22446r554712_fix

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

b

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

RMF Control: IA-5
Severity: M
CCI: CCI-000199
Version: WN10-AC-000025
Vuln IDs: V-220743
Rule IDs: SV-220743r569187_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.

Fix: F-22447r554715_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.

RMF Control: IA-5
Severity: M
CCI: CCI-000198
Version: WN10-AC-000030
Vuln IDs: V-220744
Rule IDs: SV-220744r569187_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.

Fix: F-22448r554718_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.

RMF Control: IA-5
Severity: M
CCI: CCI-000205
Version: WN10-AC-000035
Vuln IDs: V-220745
Rule IDs: SV-220745r569187_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.

Fix: F-22449r554721_fix

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

b

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

RMF Control: IA-5
Severity: M
CCI: CCI-000192
Version: WN10-AC-000040
Vuln IDs: V-220746
Rule IDs: SV-220746r569187_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.

Fix: F-22450r554724_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.

RMF Control: IA-5
Severity: H
CCI: CCI-000196
Version: WN10-AC-000045
Vuln IDs: V-220747
Rule IDs: SV-220747r569187_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.

Fix: F-22451r554727_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.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN10-AU-000005
Vuln IDs: V-220748
Rule IDs: SV-220748r569187_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.

Fix: F-22452r554730_fix

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

b

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

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN10-AU-000010
Vuln IDs: V-220749
Rule IDs: SV-220749r569187_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.

Fix: F-22453r554733_fix

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

b

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

RMF Control: AC-2
Severity: M
CCI: CCI-000018
Version: WN10-AU-000030
Vuln IDs: V-220750
Rule IDs: SV-220750r569187_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.

Fix: F-22454r554736_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.

RMF Control: AC-2
Severity: M
CCI: CCI-000018
Version: WN10-AU-000035
Vuln IDs: V-220751
Rule IDs: SV-220751r569187_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.

Fix: F-22455r554739_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.

RMF Control: AC-2
Severity: M
CCI: CCI-000018
Version: WN10-AU-000040
Vuln IDs: V-220752
Rule IDs: SV-220752r569187_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.

Fix: F-22456r554742_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 - Process Creation successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN10-AU-000050
Vuln IDs: V-220754
Rule IDs: SV-220754r569187_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.

Fix: F-22458r554748_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 failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN10-AU-000054
Vuln IDs: V-220755
Rule IDs: SV-220755r569187_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.

Fix: F-22459r554751_fix

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

b

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

RMF Control: AC-17
Severity: M
CCI: CCI-000067
Version: WN10-AU-000065
Vuln IDs: V-220757
Rule IDs: SV-220757r569187_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.

Fix: F-22461r554757_fix

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

b

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

RMF Control: AC-17
Severity: M
CCI: CCI-000067
Version: WN10-AU-000070
Vuln IDs: V-220758
Rule IDs: SV-220758r569187_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.

Fix: F-22462r554760_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.

RMF Control: AC-17
Severity: M
CCI: CCI-000067
Version: WN10-AU-000075
Vuln IDs: V-220759
Rule IDs: SV-220759r569187_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.

Fix: F-22463r554763_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.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN10-AU-000080
Vuln IDs: V-220760
Rule IDs: SV-220760r569187_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.

Fix: F-22464r554766_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

Windows 10 must be configured to audit Object Access - File Share failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN10-AU-000081
Vuln IDs: V-220761
Rule IDs: SV-220761r569187_rule

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

Fix: F-22465r554769_fix

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

b

Windows 10 must be configured to audit Object Access - File Share successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN10-AU-000082
Vuln IDs: V-220762
Rule IDs: SV-220762r569187_rule

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

Fix: F-22466r554772_fix

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

b

Windows 10 must be configured to audit Object Access - Other Object Access Events successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN10-AU-000083
Vuln IDs: V-220763
Rule IDs: SV-220763r569187_rule

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

Fix: F-22467r554775_fix

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

b

Windows 10 must be configured to audit Object Access - Other Object Access Events failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN10-AU-000084
Vuln IDs: V-220764
Rule IDs: SV-220764r569187_rule

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

Fix: F-22468r554778_fix

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

b

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

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN10-AU-000100
Vuln IDs: V-220767
Rule IDs: SV-220767r569187_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.

Fix: F-22471r554787_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.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN10-AU-000105
Vuln IDs: V-220768
Rule IDs: SV-220768r569187_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.

Fix: F-22472r554790_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 Policy Change - Authorization Policy Change successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN10-AU-000107
Vuln IDs: V-220769
Rule IDs: SV-220769r569187_rule

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

Fix: F-22473r554793_fix

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

b

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

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN10-AU-000110
Vuln IDs: V-220770
Rule IDs: SV-220770r569187_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".

Fix: F-22474r554796_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.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN10-AU-000115
Vuln IDs: V-220771
Rule IDs: SV-220771r569187_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".

Fix: F-22475r554799_fix

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

b

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

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN10-AU-000120
Vuln IDs: V-220772
Rule IDs: SV-220772r569187_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.

Fix: F-22476r554802_fix

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

b

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

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN10-AU-000130
Vuln IDs: V-220773
Rule IDs: SV-220773r569187_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.

Fix: F-22477r554805_fix

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

b

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

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN10-AU-000135
Vuln IDs: V-220774
Rule IDs: SV-220774r569187_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.

Fix: F-22478r554808_fix

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

b

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

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN10-AU-000140
Vuln IDs: V-220775
Rule IDs: SV-220775r569187_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.

Fix: F-22479r554811_fix

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

b

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

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN10-AU-000150
Vuln IDs: V-220776
Rule IDs: SV-220776r569187_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.

Fix: F-22480r554814_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.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN10-AU-000155
Vuln IDs: V-220777
Rule IDs: SV-220777r569187_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.

Fix: F-22481r554817_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.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN10-AU-000160
Vuln IDs: V-220778
Rule IDs: SV-220778r569187_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.

Fix: F-22482r554820_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.

RMF Control: AU-4
Severity: M
CCI: CCI-001849
Version: WN10-AU-000500
Vuln IDs: V-220779
Rule IDs: SV-220779r569187_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.

Fix: F-22483r554823_fix

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

b

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

RMF Control: AU-4
Severity: M
CCI: CCI-001849
Version: WN10-AU-000505
Vuln IDs: V-220780
Rule IDs: SV-220780r569187_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.

Fix: F-22484r554826_fix

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

b

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

RMF Control: AU-4
Severity: M
CCI: CCI-001849
Version: WN10-AU-000510
Vuln IDs: V-220781
Rule IDs: SV-220781r569187_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.

Fix: F-22485r554829_fix

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

b

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

RMF Control: AU-9
Severity: M
CCI: CCI-000162
Version: WN10-AU-000515
Vuln IDs: V-220782
Rule IDs: SV-220782r569187_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.

Fix: F-22486r554832_fix

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

b

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

RMF Control: AU-9
Severity: M
CCI: CCI-000162
Version: WN10-AU-000520
Vuln IDs: V-220783
Rule IDs: SV-220783r569187_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.

Fix: F-22487r554835_fix

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

b

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

RMF Control: AU-9
Severity: M
CCI: CCI-000162
Version: WN10-AU-000525
Vuln IDs: V-220784
Rule IDs: SV-220784r569187_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.

Fix: F-22488r554838_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

Windows 10 must be configured to audit Other Policy Change Events Successes.

RMF Control: AU-3
Severity: M
CCI: CCI-000130
Version: WN10-AU-000550
Vuln IDs: V-220785
Rule IDs: SV-220785r569187_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Other Policy Change Events contains events about EFS Data Recovery Agent policy changes, changes in Windows Filtering Platform filter, status on Security policy settings updates for local Group Policy settings, Central Access Policy changes, and detailed troubleshooting events for Cryptographic Next Generation (CNG) operations.

Fix: F-22489r554841_fix

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

b

Windows 10 must be configured to audit Other Policy Change Events Failures.

RMF Control: AU-3
Severity: M
CCI: CCI-000130
Version: WN10-AU-000555
Vuln IDs: V-220786
Rule IDs: SV-220786r569187_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Other Policy Change Events contains events about EFS Data Recovery Agent policy changes, changes in Windows Filtering Platform filter, status on Security policy settings updates for local Group Policy settings, Central Access Policy changes, and detailed troubleshooting events for Cryptographic Next Generation (CNG) operations.

Fix: F-22490r554844_fix

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

b

Windows 10 must be configured to audit other Logon/Logoff Events Successes.

RMF Control: AU-3
Severity: M
CCI: CCI-000130
Version: WN10-AU-000560
Vuln IDs: V-220787
Rule IDs: SV-220787r569187_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Other Logon/Logoff Events determines whether Windows generates audit events for other logon or logoff events. Logon events are essential to understanding user activity and detecting potential attacks.

Fix: F-22491r554847_fix

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

b

Windows 10 must be configured to audit other Logon/Logoff Events Failures.

RMF Control: AU-3
Severity: M
CCI: CCI-000130
Version: WN10-AU-000565
Vuln IDs: V-220788
Rule IDs: SV-220788r569187_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Other Logon/Logoff Events determines whether Windows generates audit events for other logon or logoff events. Logon events are essential to understanding user activity and detecting potential attacks.

Fix: F-22492r554850_fix

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

b

Windows 10 must be configured to audit Detailed File Share Failures.

RMF Control: AU-3
Severity: M
CCI: CCI-000130
Version: WN10-AU-000570
Vuln IDs: V-220789
Rule IDs: SV-220789r569187_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Detailed File Share allows you to audit attempts to access files and folders on a shared folder. The Detailed File Share setting logs an event every time a file or folder is accessed, whereas the File Share setting only records one event for any connection established between a client and file share. Detailed File Share audit events include detailed information about the permissions or other criteria used to grant or deny access.

Fix: F-22493r554853_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Object Access >> “Detailed File Share" with "Failure" selected.

b

Windows 10 must be configured to audit MPSSVC Rule-Level Policy Change Successes.

RMF Control: AU-3
Severity: M
CCI: CCI-000130
Version: WN10-AU-000575
Vuln IDs: V-220790
Rule IDs: SV-220790r569187_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit MPSSVC Rule-Level Policy Change determines whether the operating system generates audit events when changes are made to policy rules for the Microsoft Protection Service (MPSSVC.exe).

Fix: F-22494r554856_fix

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

b

Windows 10 must be configured to audit MPSSVC Rule-Level Policy Change Failures.

RMF Control: AU-3
Severity: M
CCI: CCI-000130
Version: WN10-AU-000580
Vuln IDs: V-220791
Rule IDs: SV-220791r569187_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit MPSSVC Rule-Level Policy Change determines whether the operating system generates audit events when changes are made to policy rules for the Microsoft Protection Service (MPSSVC.exe).

Fix: F-22495r554859_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Policy Change >> “Audit MPSSVC Rule-Level Policy Change" with "Failure" selected.

b

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

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN10-CC-000010
Vuln IDs: V-220794
Rule IDs: SV-220794r569187_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.

Fix: F-22498r554868_fix

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

b

IPv6 source routing must be configured to highest protection.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000020
Vuln IDs: V-220795
Rule IDs: SV-220795r569187_rule

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

Fix: F-22499r554871_fix

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

b

The system must be configured to prevent IP source routing.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000025
Vuln IDs: V-220796
Rule IDs: SV-220796r569187_rule

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

Fix: F-22500r554874_fix

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

a

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

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN10-CC-000030
Vuln IDs: V-220797
Rule IDs: SV-220797r569187_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.

Fix: F-22501r554877_fix

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

a

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

RMF Control: SC-5
Severity: L
CCI: CCI-002385
Version: WN10-CC-000035
Vuln IDs: V-220798
Rule IDs: SV-220798r569187_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.

Fix: F-22502r554880_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

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

RMF Control: SC-3
Severity: M
CCI: CCI-001084
Version: WN10-CC-000037
Vuln IDs: V-220799
Rule IDs: SV-220799r569187_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.

Fix: F-22503r554883_fix

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

b

WDigest Authentication must be disabled.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN10-CC-000038
Vuln IDs: V-220800
Rule IDs: SV-220800r569187_rule

When the WDigest Authentication protocol is enabled, plain text passwords are stored in the Local Security Authority Subsystem Service (LSASS) exposing them to theft. WDigest is disabled by default in Windows 10. This setting ensures this is enforced.

Fix: F-22504r554886_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MS Security Guide >> "WDigest Authentication (disabling may require KB2871997)" to "Disabled". The patch referenced in the policy title is not required for Windows 10. This policy setting requires the installation of the SecGuide custom templates included with the STIG package. "SecGuide.admx" and "SecGuide.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

b

Run as different user must be removed from context menus.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN10-CC-000039
Vuln IDs: V-220801
Rule IDs: SV-220801r569187_rule

The "Run as different user" selection from context menus allows the use of credentials other than the currently logged on user. Using privileged credentials in a standard user session can expose those credentials to theft. Removing this option from context menus helps prevent this from occurring.

Fix: F-22505r554889_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MS Security Guide >> "Remove "Run as Different User" from context menus" to "Enabled". This policy setting requires the installation of the SecGuide custom templates included with the STIG package. "SecGuide.admx" and "SecGuide.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

b

Insecure logons to an SMB server must be disabled.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000040
Vuln IDs: V-220802
Rule IDs: SV-220802r569187_rule

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

Fix: F-22506r554892_fix

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

b

Internet connection sharing must be disabled.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN10-CC-000044
Vuln IDs: V-220803
Rule IDs: SV-220803r569187_rule

Internet connection sharing makes it possible for an existing internet connection, such as through wireless, to be shared and used by other systems essentially creating a mobile hotspot. This exposes the system sharing the connection to others with potentially malicious purpose.

Fix: F-22507r554895_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Network >> Network Connections >> "Prohibit use of Internet Connection Sharing on your DNS domain network" to "Enabled".

b

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

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000055
Vuln IDs: V-220806
Rule IDs: SV-220806r569187_rule

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

Fix: F-22510r554904_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

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

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000060
Vuln IDs: V-220807
Rule IDs: SV-220807r569187_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.

Fix: F-22511r554907_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

Wi-Fi Sense must be disabled.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000065
Vuln IDs: V-220808
Rule IDs: SV-220808r569187_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.

Fix: F-22512r554910_fix

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

b

Command line data must be included in process creation events.

RMF Control: AU-3
Severity: M
CCI: CCI-000135
Version: WN10-CC-000066
Vuln IDs: V-220809
Rule IDs: SV-220809r569187_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.

Fix: F-22513r554913_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Audit Process Creation >> "Include command line in process creation events" to "Enabled".

b

Windows 10 must be configured to enable Remote host allows delegation of non-exportable credentials.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000068
Vuln IDs: V-220810
Rule IDs: SV-220810r569187_rule

An exportable version of credentials is provided to remote hosts when using credential delegation which exposes them to theft on the remote host. Restricted Admin mode or Remote Credential Guard allow delegation of non-exportable credentials providing additional protection of the credentials. Enabling this configures the host to support Restricted Admin mode or Remote Credential Guard.

Fix: F-22514r554916_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Credentials Delegation >> "Remote host allows delegation of non-exportable credentials" to "Enabled".

b

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

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000085
Vuln IDs: V-220813
Rule IDs: SV-220813r569187_rule

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

Fix: F-22517r554925_fix

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

b

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

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000090
Vuln IDs: V-220814
Rule IDs: SV-220814r569187_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.

Fix: F-22518r554928_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

Downloading print driver packages over HTTP must be prevented.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN10-CC-000100
Vuln IDs: V-220815
Rule IDs: SV-220815r569187_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.

Fix: F-22519r554931_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

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

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN10-CC-000105
Vuln IDs: V-220816
Rule IDs: SV-220816r569187_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.

Fix: F-22520r554934_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.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN10-CC-000110
Vuln IDs: V-220817
Rule IDs: SV-220817r569187_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.

Fix: F-22521r554937_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

Systems must at least attempt device authentication using certificates.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000115
Vuln IDs: V-220818
Rule IDs: SV-220818r569187_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.

Fix: F-22522r554940_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.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN10-CC-000120
Vuln IDs: V-220819
Rule IDs: SV-220819r569187_rule

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

Fix: F-22523r554943_fix

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

b

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

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN10-CC-000130
Vuln IDs: V-220820
Rule IDs: SV-220820r569187_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.

Fix: F-22524r554946_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

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

RMF Control: IA-11
Severity: M
CCI: CCI-002038
Version: WN10-CC-000145
Vuln IDs: V-220821
Rule IDs: SV-220821r569187_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).

Fix: F-22525r554949_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

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

RMF Control: IA-11
Severity: M
CCI: CCI-002038
Version: WN10-CC-000150
Vuln IDs: V-220822
Rule IDs: SV-220822r569187_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).

Fix: F-22526r554952_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.

RMF Control: SC-4
Severity: H
CCI: CCI-001090
Version: WN10-CC-000155
Vuln IDs: V-220823
Rule IDs: SV-220823r569187_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.

Fix: F-22527r554955_fix

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

b

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

RMF Control: IA-3
Severity: M
CCI: CCI-001967
Version: WN10-CC-000165
Vuln IDs: V-220824
Rule IDs: SV-220824r569187_rule

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

Fix: F-22528r554958_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.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN10-CC-000170
Vuln IDs: V-220825
Rule IDs: SV-220825r569187_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.

Fix: F-22529r554961_fix

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

a

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

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: WN10-CC-000175
Vuln IDs: V-220826
Rule IDs: SV-220826r569187_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.

Fix: F-22530r554964_fix

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

c

Autoplay must be turned off for non-volume devices.

RMF Control: CM-7
Severity: H
CCI: CCI-001764
Version: WN10-CC-000180
Vuln IDs: V-220827
Rule IDs: SV-220827r569187_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).

Fix: F-22531r554967_fix

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

c

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

RMF Control: CM-7
Severity: H
CCI: CCI-001764
Version: WN10-CC-000185
Vuln IDs: V-220828
Rule IDs: SV-220828r569187_rule

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

Fix: F-22532r554970_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.

RMF Control: CM-7
Severity: H
CCI: CCI-001764
Version: WN10-CC-000190
Vuln IDs: V-220829
Rule IDs: SV-220829r569187_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.

Fix: F-22533r554973_fix

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

b

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

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000195
Vuln IDs: V-220830
Rule IDs: SV-220830r569187_rule

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

Fix: F-22534r554976_fix

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

a

Microsoft consumer experiences must be turned off.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: WN10-CC-000197
Vuln IDs: V-220831
Rule IDs: SV-220831r569187_rule

Microsoft consumer experiences provides suggestions and notifications to users, which may include the installation of Windows Store apps. Organizations may control the execution of applications through other means such as whitelisting. Turning off Microsoft consumer experiences will help prevent the unwanted installation of suggested applications.

Fix: F-22535r554979_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Cloud Content >> "Turn off Microsoft consumer experiences" to "Enabled".

b

Administrator accounts must not be enumerated during elevation.

RMF Control: SC-3
Severity: M
CCI: CCI-001084
Version: WN10-CC-000200
Vuln IDs: V-220832
Rule IDs: SV-220832r569187_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.

Fix: F-22536r554982_fix

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

b

If Enhanced diagnostic data is enabled it must be limited to the minimum required to support Windows Analytics.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000204
Vuln IDs: V-220833
Rule IDs: SV-220833r793250_rule

Some features may communicate with the vendor, sending system information or downloading data or components for the feature. Limiting this capability will prevent potentially sensitive information from being sent outside the enterprise. The "Enhanced" level for telemetry includes additional information beyond "Security" and "Basic" on how Windows and apps are used and advanced reliability data. Windows Analytics can use a "limited enhanced" level to provide information such as health data for devices.

Fix: F-22537r554985_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Data Collection and Preview Builds >> "Limit Enhanced diagnostic data to the minimum required by Windows Analytics" to "Enabled" with "Enable Windows Analytics collection" selected in "Options:".

b

Windows Telemetry must not be configured to Full.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000205
Vuln IDs: V-220834
Rule IDs: SV-220834r569187_rule

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

Fix: F-22538r554988_fix

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

a

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

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN10-CC-000206
Vuln IDs: V-220835
Rule IDs: SV-220835r569187_rule

Windows 10 allows Windows Update to obtain updates from additional sources instead of Microsoft. In addition to Microsoft, updates can be obtained from and sent to PCs on the local network as well as on the Internet. This is part of the Windows Update trusted process, however to minimize outside exposure, obtaining updates from or sending to systems on the Internet must be prevented.

Fix: F-22539r554991_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Delivery Optimization >> "Download Mode" to "Enabled" with any option except "Internet" selected. Acceptable selections include: Bypass (100) Group (2) HTTP only (0) LAN (1) Simple (99) v1507 (LTSB) does not include this group policy setting locally. For domain joined systems, configure through domain group policy as "HTTP only (0)" or "Lan (1)". Standalone systems configure using Settings >> Update & Security >> Windows Update >> Advanced Options >> "Choose how updates are delivered" with either "Off" or "PCs on my local network" selected.

b

The Windows Defender SmartScreen for Explorer must be enabled.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN10-CC-000210
Vuln IDs: V-220836
Rule IDs: SV-220836r569187_rule

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

Fix: F-22540r554994_fix

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

b

Explorer Data Execution Prevention must be enabled.

RMF Control: SI-16
Severity: M
CCI: CCI-002824
Version: WN10-CC-000215
Vuln IDs: V-220837
Rule IDs: SV-220837r569187_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.

Fix: F-22541r554997_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.

RMF Control: SC-5
Severity: L
CCI: CCI-002385
Version: WN10-CC-000220
Vuln IDs: V-220838
Rule IDs: SV-220838r569187_rule

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

Fix: F-22542r555000_fix

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

b

File Explorer shell protocol must run in protected mode.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000225
Vuln IDs: V-220839
Rule IDs: SV-220839r569187_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.

Fix: F-22543r555003_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

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

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000230
Vuln IDs: V-220840
Rule IDs: SV-220840r569187_rule

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

Fix: F-22544r555006_fix

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

b

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

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000235
Vuln IDs: V-220841
Rule IDs: SV-220841r569187_rule

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

Fix: F-22545r555009_fix

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

b

Windows 10 must be configured to prevent certificate error overrides in Microsoft Edge.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000238
Vuln IDs: V-220842
Rule IDs: SV-220842r569187_rule

Web security certificates provide an indication whether a site is legitimate. This policy setting prevents the user from ignoring Secure Sockets Layer/Transport Layer Security (SSL/TLS) certificate errors that interrupt browsing.

Fix: F-22546r555012_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Edge >> "Prevent certificate error overrides" to "Enabled".

b

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

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000245
Vuln IDs: V-220843
Rule IDs: SV-220843r569187_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.

Fix: F-22547r555015_fix

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

b

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

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000250
Vuln IDs: V-220844
Rule IDs: SV-220844r569187_rule

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

Fix: F-22548r555018_fix

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

b

Windows 10 must be configured to disable Windows Game Recording and Broadcasting.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN10-CC-000252
Vuln IDs: V-220845
Rule IDs: SV-220845r569187_rule

Windows Game Recording and Broadcasting is intended for use with games, however it could potentially record screen shots of other applications and expose sensitive data. Disabling the feature will prevent this from occurring.

Fix: F-22549r555021_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Game Recording and Broadcasting >> "Enables or disables Windows Game Recording and Broadcasting" to "Disabled".

b

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

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000260
Vuln IDs: V-220847
Rule IDs: SV-220847r569187_rule

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

Fix: F-22551r555027_fix

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

b

Passwords must not be saved in the Remote Desktop Client.

RMF Control: IA-11
Severity: M
CCI: CCI-002038
Version: WN10-CC-000270
Vuln IDs: V-220848
Rule IDs: SV-220848r569187_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.

Fix: F-22552r555030_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.

RMF Control: SC-4
Severity: M
CCI: CCI-001090
Version: WN10-CC-000275
Vuln IDs: V-220849
Rule IDs: SV-220849r569187_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.

Fix: F-22553r555033_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.

RMF Control: IA-11
Severity: M
CCI: CCI-002038
Version: WN10-CC-000280
Vuln IDs: V-220850
Rule IDs: SV-220850r569187_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.

Fix: F-22554r555036_fix

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

b

The Remote Desktop Session Host must require secure RPC communications.

RMF Control: AC-17
Severity: M
CCI: CCI-001453
Version: WN10-CC-000285
Vuln IDs: V-220851
Rule IDs: SV-220851r569187_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.

Fix: F-22555r555039_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".

b

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

RMF Control: AC-17
Severity: M
CCI: CCI-000068
Version: WN10-CC-000290
Vuln IDs: V-220852
Rule IDs: SV-220852r569187_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.

Fix: F-22556r555042_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.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000295
Vuln IDs: V-220853
Rule IDs: SV-220853r569187_rule

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

Fix: F-22557r555045_fix

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

b

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

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN10-CC-000300
Vuln IDs: V-220854
Rule IDs: SV-220854r569187_rule

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

Fix: F-22558r555048_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".

b

Indexing of encrypted files must be turned off.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN10-CC-000305
Vuln IDs: V-220855
Rule IDs: SV-220855r569187_rule

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

Fix: F-22559r555051_fix

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

b

Users must be prevented from changing installation options.

RMF Control: CM-11
Severity: M
CCI: CCI-001812
Version: WN10-CC-000310
Vuln IDs: V-220856
Rule IDs: SV-220856r569187_rule

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

Fix: F-22560r555054_fix

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

c

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

RMF Control: CM-11
Severity: H
CCI: CCI-001812
Version: WN10-CC-000315
Vuln IDs: V-220857
Rule IDs: SV-220857r569187_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.

Fix: F-22561r555057_fix

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

b

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

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000320
Vuln IDs: V-220858
Rule IDs: SV-220858r569187_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.

Fix: F-22562r555060_fix

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

b

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

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000325
Vuln IDs: V-220859
Rule IDs: SV-220859r569187_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.

Fix: F-22563r555063_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".

b

PowerShell script block logging must be enabled on Windows 10.

RMF Control: AU-3
Severity: M
CCI: CCI-000135
Version: WN10-CC-000326
Vuln IDs: V-220860
Rule IDs: SV-220860r569187_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.

Fix: F-22564r555066_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows PowerShell >> "Turn on PowerShell Script Block Logging" to "Enabled".

c

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

RMF Control: MA-4
Severity: H
CCI: CCI-000877
Version: WN10-CC-000330
Vuln IDs: V-220862
Rule IDs: SV-220862r569187_rule

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

Fix: F-22566r555072_fix

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

b

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

RMF Control: MA-4
Severity: M
CCI: CCI-002890
Version: WN10-CC-000335
Vuln IDs: V-220863
Rule IDs: SV-220863r569187_rule

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

Fix: F-22567r555075_fix

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

c

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

RMF Control: MA-4
Severity: H
CCI: CCI-000877
Version: WN10-CC-000345
Vuln IDs: V-220865
Rule IDs: SV-220865r654974_rule

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

Fix: F-22569r654973_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Remote Management (WinRM) >> WinRM Service >> "Allow Basic authentication" to "Disabled". Severity Override Guidance: The AO can allow the severity override if they have reviewed the overall protection. This would only be allowed temporarily for implementation as documented and approved. …. Allowing Basic authentication to be used for the sole creation of Office 365 DoD tenants. …. A documented mechanism and or script that can disable Basic authentication once administration completes. …. Use of a Privileged Access Workstation (PAW) and adherence to the Clean Source principle for administration.

b

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

RMF Control: MA-4
Severity: M
CCI: CCI-002890
Version: WN10-CC-000350
Vuln IDs: V-220866
Rule IDs: SV-220866r569187_rule

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

Fix: F-22570r555084_fix

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

b

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

RMF Control: IA-11
Severity: M
CCI: CCI-002038
Version: WN10-CC-000355
Vuln IDs: V-220867
Rule IDs: SV-220867r569187_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.

Fix: F-22571r555087_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".

b

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

RMF Control: MA-4
Severity: M
CCI: CCI-000877
Version: WN10-CC-000360
Vuln IDs: V-220868
Rule IDs: SV-220868r569187_rule

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

Fix: F-22572r555090_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 convenience PIN for Windows 10 must be disabled.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN10-CC-000370
Vuln IDs: V-220870
Rule IDs: SV-220870r569187_rule

This policy controls whether a domain user can sign in using a convenience PIN to prevent enabling (Password Stuffer).

Fix: F-22574r555096_fix

Disable the convenience PIN sign-in. If this needs to be corrected configure the policy value for Computer Configuration >> Administrative Templates >> System >> Logon >> Set "Turn on convenience PIN sign-in" to "Disabled”.

b

Windows Ink Workspace must be configured to disallow access above the lock.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN10-CC-000385
Vuln IDs: V-220871
Rule IDs: SV-220871r642141_rule

This action secures Windows Ink, which contains applications and features oriented toward pen computing.

Fix: F-22575r642140_fix

Disable the convenience PIN sign-in. If this needs to be corrected, configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Ink Workspace >> Set "Allow Windows Ink Workspace" to "Enabled” and set Options "On, but disallow access above lock".

b

Windows 10 Kernel (Direct Memory Access) DMA Protection must be enabled.

RMF Control: SC-4
Severity: M
CCI: CCI-001090
Version: WN10-EP-000310
Vuln IDs: V-220902
Rule IDs: SV-220902r569187_rule

Kernel DMA Protection to protect PCs against drive-by Direct Memory Access (DMA) attacks using PCI hot plug devices connected to Thunderbolt™ 3 ports. Drive-by DMA attacks can lead to disclosure of sensitive information residing on a PC, or even injection of malware that allows attackers to bypass the lock screen or control PCs remotely.

Fix: F-22606r555192_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Kernel DMA Protection >> "Enumeration policy for external devices incompatible with Kernel DMA Protection" to "Enabled" with "Enumeration Policy" set to "Block All".

b

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

RMF Control: IA-5
Severity: M
CCI: CCI-000185
Version: WN10-PK-000005
Vuln IDs: V-220903
Rule IDs: SV-220903r569310_rule

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

Fix: F-22607r603228_fix

Install the DoD Root CA certificates. DoD Root CA 2 DoD Root CA 3 DoD Root CA 4 DoD Root CA 5 The InstallRoot tool is available on Cyber Exchange at https://cyber.mil/pki-pke/tools-configuration-files.

b

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

RMF Control: IA-5
Severity: M
CCI: CCI-000185
Version: WN10-PK-000010
Vuln IDs: V-220904
Rule IDs: SV-220904r569312_rule

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

Fix: F-22608r603230_fix

Install the ECA Root CA certificates on unclassified systems. ECA Root CA 2 ECA Root CA 4 The InstallRoot tool is available on Cyber Exchange at https://cyber.mil/pki-pke/tools-configuration-files.

b

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

RMF Control: IA-5
Severity: M
CCI: CCI-000185
Version: WN10-PK-000015
Vuln IDs: V-220905
Rule IDs: SV-220905r569314_rule

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

Fix: F-22609r603232_fix

Install the DoD Interoperability Root CA cross-certificates on unclassified systems. Issued To - Issued By - Thumbprint DoD Root CA 2 - DoD Interoperability Root CA 1 - A8C27332CCB4CA49554CE55D34062A7DD2850C02 DoD Root CA 3 - DoD Interoperability Root CA 2 - AC06108CA348CC03B53795C64BF84403C1DBD341 The certificates can be installed using the InstallRoot tool. The tool and user guide are available on Cyber Exchange at https://cyber.mil/pki-pke/tools-configuration-files.

b

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

RMF Control: IA-5
Severity: M
CCI: CCI-000185
Version: WN10-PK-000020
Vuln IDs: V-220906
Rule IDs: SV-220906r569316_rule

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

Fix: F-22610r603234_fix

Install the US DoD CCEB Interoperability Root CA cross-certificate on unclassified systems. Issued To - Issued By - Thumbprint DoD Root CA 3 - US DoD CCEB Interoperability Root CA 2 - AF132AC65DE86FC4FB3FE51FD637EBA0FF0B12A9 The certificates can be installed using the InstallRoot tool. The tool and user guide are available on Cyber Exchange at https://cyber.mil/pki-pke/tools-configuration-files.

b

The built-in administrator account must be disabled.

RMF Control: IA-2
Severity: M
CCI: CCI-000764
Version: WN10-SO-000005
Vuln IDs: V-220908
Rule IDs: SV-220908r569187_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.

Fix: F-22612r555210_fix

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

b

The built-in guest account must be disabled.

RMF Control: IA-8
Severity: M
CCI: CCI-000804
Version: WN10-SO-000010
Vuln IDs: V-220909
Rule IDs: SV-220909r569187_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.

Fix: F-22613r555213_fix

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

b

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

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-SO-000015
Vuln IDs: V-220910
Rule IDs: SV-220910r569187_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.

Fix: F-22614r555216_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.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-SO-000020
Vuln IDs: V-220911
Rule IDs: SV-220911r569187_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.

Fix: F-22615r555219_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

The built-in guest account must be renamed.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-SO-000025
Vuln IDs: V-220912
Rule IDs: SV-220912r569187_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.

Fix: F-22616r555222_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

Audit policy using subcategories must be enabled.

RMF Control: AU-12
Severity: M
CCI: CCI-000169
Version: WN10-SO-000030
Vuln IDs: V-220913
Rule IDs: SV-220913r569187_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.

Fix: F-22617r555225_fix

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

b

Outgoing secure channel traffic must be encrypted or signed.

RMF Control: SC-8
Severity: M
CCI: CCI-002418
Version: WN10-SO-000035
Vuln IDs: V-220914
Rule IDs: SV-220914r569187_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.

Fix: F-22618r555228_fix

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

b

Outgoing secure channel traffic must be encrypted when possible.

RMF Control: SC-8
Severity: M
CCI: CCI-002418
Version: WN10-SO-000040
Vuln IDs: V-220915
Rule IDs: SV-220915r569187_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.

Fix: F-22619r555231_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

Outgoing secure channel traffic must be signed when possible.

RMF Control: SC-8
Severity: M
CCI: CCI-002418
Version: WN10-SO-000045
Vuln IDs: V-220916
Rule IDs: SV-220916r569187_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.

Fix: F-22620r555234_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".

a

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

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN10-SO-000050
Vuln IDs: V-220917
Rule IDs: SV-220917r569187_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.

Fix: F-22621r555237_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".

a

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

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN10-SO-000055
Vuln IDs: V-220918
Rule IDs: SV-220918r569187_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.

Fix: F-22622r555240_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).

b

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

RMF Control: SC-8
Severity: M
CCI: CCI-002418
Version: WN10-SO-000060
Vuln IDs: V-220919
Rule IDs: SV-220919r569187_rule

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

Fix: F-22623r555243_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".

b

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

RMF Control: AC-11
Severity: M
CCI: CCI-000057
Version: WN10-SO-000070
Vuln IDs: V-220920
Rule IDs: SV-220920r569187_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.

Fix: F-22624r555246_fix

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

a

Caching of logon credentials must be limited.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN10-SO-000085
Vuln IDs: V-220923
Rule IDs: SV-220923r569187_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.

Fix: F-22627r555255_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

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

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-SO-000095
Vuln IDs: V-220924
Rule IDs: SV-220924r569187_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.

Fix: F-22628r555258_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

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

RMF Control: SC-8
Severity: M
CCI: CCI-002418
Version: WN10-SO-000100
Vuln IDs: V-220925
Rule IDs: SV-220925r569187_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.

Fix: F-22629r555261_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

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

RMF Control: IA-5
Severity: M
CCI: CCI-000197
Version: WN10-SO-000110
Vuln IDs: V-220926
Rule IDs: SV-220926r569187_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.

Fix: F-22630r555264_fix

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

b

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

RMF Control: SC-8
Severity: M
CCI: CCI-002418
Version: WN10-SO-000120
Vuln IDs: V-220927
Rule IDs: SV-220927r569187_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.

Fix: F-22631r555267_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".

c

Anonymous enumeration of SAM accounts must not be allowed.

RMF Control: CM-6
Severity: H
CCI: CCI-000366
Version: WN10-SO-000145
Vuln IDs: V-220929
Rule IDs: SV-220929r569187_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.

Fix: F-22633r555273_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".

c

Anonymous enumeration of shares must be restricted.

RMF Control: SC-4
Severity: H
CCI: CCI-001090
Version: WN10-SO-000150
Vuln IDs: V-220930
Rule IDs: SV-220930r569187_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.

Fix: F-22634r555276_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

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

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-SO-000160
Vuln IDs: V-220931
Rule IDs: SV-220931r569187_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.

Fix: F-22635r555279_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.

RMF Control: SC-4
Severity: H
CCI: CCI-001090
Version: WN10-SO-000165
Vuln IDs: V-220932
Rule IDs: SV-220932r569187_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.

Fix: F-22636r555282_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

Remote calls to the Security Account Manager (SAM) must be restricted to Administrators.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN10-SO-000167
Vuln IDs: V-220933
Rule IDs: SV-220933r569187_rule

The Windows Security Account Manager (SAM) stores users' passwords. Restricting remote rpc connections to the SAM to Administrators helps protect those credentials.

Fix: F-22637r555285_fix

Navigate to the policy Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network access: Restrict clients allowed to make remote calls to SAM". Select "Edit Security" to configure the "Security descriptor:". Add "Administrators" in "Group or user names:" if it is not already listed (this is the default). Select "Administrators" in "Group or user names:". Select "Allow" for "Remote Access" in "Permissions for "Administrators". Click "OK". The "Security descriptor:" must be populated with "O:BAG:BAD:(A;;RC;;;BA) for the policy to be enforced.

b

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

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-SO-000180
Vuln IDs: V-220934
Rule IDs: SV-220934r569187_rule

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

Fix: F-22638r555288_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.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-SO-000185
Vuln IDs: V-220935
Rule IDs: SV-220935r569187_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.

Fix: F-22639r555291_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.

RMF Control: IA-7
Severity: M
CCI: CCI-000803
Version: WN10-SO-000190
Vuln IDs: V-220936
Rule IDs: SV-220936r569187_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.

Fix: F-22640r555294_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.

RMF Control: IA-5
Severity: H
CCI: CCI-000196
Version: WN10-SO-000195
Vuln IDs: V-220937
Rule IDs: SV-220937r569187_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.

Fix: F-22641r555297_fix

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

c

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

RMF Control: CM-6
Severity: H
CCI: CCI-000366
Version: WN10-SO-000205
Vuln IDs: V-220938
Rule IDs: SV-220938r569187_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.

Fix: F-22642r555300_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.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-SO-000210
Vuln IDs: V-220939
Rule IDs: SV-220939r569187_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.

Fix: F-22643r555303_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.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-SO-000215
Vuln IDs: V-220940
Rule IDs: SV-220940r569187_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.

Fix: F-22644r555306_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.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-SO-000220
Vuln IDs: V-220941
Rule IDs: SV-220941r569187_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.

Fix: F-22645r555309_fix

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

b

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

RMF Control: SC-13
Severity: M
CCI: CCI-002450
Version: WN10-SO-000230
Vuln IDs: V-220942
Rule IDs: SV-220942r569187_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.

Fix: F-22646r555312_fix

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

a

The default permissions of global system objects must be increased.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN10-SO-000240
Vuln IDs: V-220943
Rule IDs: SV-220943r569187_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.

Fix: F-22647r555315_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.

RMF Control: IA-11
Severity: M
CCI: CCI-002038
Version: WN10-SO-000245
Vuln IDs: V-220944
Rule IDs: SV-220944r569187_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.

Fix: F-22648r555318_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.

RMF Control: SC-3
Severity: M
CCI: CCI-001084
Version: WN10-SO-000250
Vuln IDs: V-220945
Rule IDs: SV-220945r569187_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.

Fix: F-22649r555321_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.

RMF Control: IA-11
Severity: M
CCI: CCI-002038
Version: WN10-SO-000255
Vuln IDs: V-220947
Rule IDs: SV-220947r569187_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.

Fix: F-22651r555327_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.

RMF Control: SC-3
Severity: M
CCI: CCI-001084
Version: WN10-SO-000260
Vuln IDs: V-220948
Rule IDs: SV-220948r569187_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.

Fix: F-22652r555330_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.

RMF Control: SC-3
Severity: M
CCI: CCI-001084
Version: WN10-SO-000265
Vuln IDs: V-220949
Rule IDs: SV-220949r569187_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.

Fix: F-22653r555333_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.

RMF Control: IA-11
Severity: M
CCI: CCI-002038
Version: WN10-SO-000270
Vuln IDs: V-220950
Rule IDs: SV-220950r569187_rule

User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting enables UAC.

Fix: F-22654r555336_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.

RMF Control: SC-3
Severity: M
CCI: CCI-001084
Version: WN10-SO-000275
Vuln IDs: V-220951
Rule IDs: SV-220951r569187_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.

Fix: F-22655r555339_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

The Access Credential Manager as a trusted caller user right must not be assigned to any groups or accounts.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN10-UR-000005
Vuln IDs: V-220956
Rule IDs: SV-220956r569187_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.

Fix: F-22660r555354_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Access Credential Manager as a trusted caller" to be defined but containing no entries (blank).

b

The Access this computer from the network user right must only be assigned to the Administrators and Remote Desktop Users groups.

RMF Control: AC-3
Severity: M
CCI: CCI-000213
Version: WN10-UR-000010
Vuln IDs: V-220957
Rule IDs: SV-220957r569187_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.

Fix: F-22661r555357_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Access this computer from the network" to only include the following groups or accounts: Administrators Remote Desktop Users

c

The Act as part of the operating system user right must not be assigned to any groups or accounts.

RMF Control: AC-6
Severity: H
CCI: CCI-002235
Version: WN10-UR-000015
Vuln IDs: V-220958
Rule IDs: SV-220958r569187_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.

Fix: F-22662r555360_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Act as part of the operating system" to be defined but containing no entries (blank).

b

The Allow log on locally user right must only be assigned to the Administrators and Users groups.

RMF Control: AC-3
Severity: M
CCI: CCI-000213
Version: WN10-UR-000025
Vuln IDs: V-220959
Rule IDs: SV-220959r569187_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.

Fix: F-22663r555363_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Allow log on locally" to only include the following groups or accounts: Administrators Users

b

The Back up files and directories user right must only be assigned to the Administrators group.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN10-UR-000030
Vuln IDs: V-220960
Rule IDs: SV-220960r569187_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."

Fix: F-22664r555366_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 and NT SERVICE\autotimesvc.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN10-UR-000035
Vuln IDs: V-220961
Rule IDs: SV-220961r569187_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. The NT SERVICE\autotimesvc is added in v1909 cumulative update.

Fix: F-22665r555369_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 NT SERVICE\autotimesvc is added in v1909 cumulative update.

b

The Create a pagefile user right must only be assigned to the Administrators group.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN10-UR-000040
Vuln IDs: V-220962
Rule IDs: SV-220962r569187_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.

Fix: F-22666r555372_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.

RMF Control: AC-6
Severity: H
CCI: CCI-002235
Version: WN10-UR-000045
Vuln IDs: V-220963
Rule IDs: SV-220963r569187_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.

Fix: F-22667r555375_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.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN10-UR-000050
Vuln IDs: V-220964
Rule IDs: SV-220964r569187_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.

Fix: F-22668r555378_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.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN10-UR-000055
Vuln IDs: V-220965
Rule IDs: SV-220965r569187_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.

Fix: F-22669r555381_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.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN10-UR-000060
Vuln IDs: V-220966
Rule IDs: SV-220966r569187_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.

Fix: F-22670r555384_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.

RMF Control: AC-6
Severity: H
CCI: CCI-002235
Version: WN10-UR-000065
Vuln IDs: V-220967
Rule IDs: SV-220967r569187_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.

Fix: F-22671r555387_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.

RMF Control: AC-3
Severity: M
CCI: CCI-000213
Version: WN10-UR-000070
Vuln IDs: V-220968
Rule IDs: SV-220968r569187_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.

Fix: F-22672r555390_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny access to this computer from the network" to include the following. Domain Systems Only: Enterprise Admins group Domain Admins group Local account (see Note below) All Systems: Guests group Privileged Access Workstations (PAWs) dedicated to the management of Active Directory are exempt from denying the Enterprise Admins and Domain Admins groups. (See the Windows Privileged Access Workstation STIG for PAW requirements.) Note: "Local account" is a built-in security group used to assign user rights and permissions to all local accounts.

b

The Deny log on as a batch job user right on domain-joined workstations must be configured to prevent access from highly privileged domain accounts.

RMF Control: AC-3
Severity: M
CCI: CCI-000213
Version: WN10-UR-000075
Vuln IDs: V-220969
Rule IDs: SV-220969r569187_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.

Fix: F-22673r555393_fix

This requirement is applicable to domain-joined systems, for standalone systems this is NA. Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny log on as a batch job" to include the following. Domain Systems Only: Enterprise Admin Group Domain Admin Group

b

The Deny log on as a service user right on Windows 10 domain-joined workstations must be configured to prevent access from highly privileged domain accounts.

RMF Control: AC-3
Severity: M
CCI: CCI-000213
Version: WN10-UR-000080
Vuln IDs: V-220970
Rule IDs: SV-220970r569187_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.

Fix: F-22674r555396_fix

This requirement is applicable to domain-joined systems, for standalone systems this is NA. Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny log on as a service" to include the following. Domain Systems Only: Enterprise Admins Group Domain Admins Group

b

The Deny log on locally user right on workstations must be configured to prevent access from highly privileged domain accounts on domain systems and unauthenticated access on all systems.

RMF Control: AC-3
Severity: M
CCI: CCI-000213
Version: WN10-UR-000085
Vuln IDs: V-220971
Rule IDs: SV-220971r569187_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.

Fix: F-22675r555399_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny log on locally" to include the following. Domain Systems Only: Enterprise Admins Group Domain Admins Group Privileged Access Workstations (PAWs) dedicated to the management of Active Directory are exempt from denying the Enterprise Admins and Domain Admins groups. (See the Windows Privileged Access Workstation STIG for PAW requirements.) All Systems: Guests Group

b

The Deny log on through Remote Desktop Services user right on Windows 10 workstations must at a minimum be configured to prevent access from highly privileged domain accounts and local accounts on domain systems and unauthenticated access on all systems.

RMF Control: AC-3
Severity: M
CCI: CCI-000213
Version: WN10-UR-000090
Vuln IDs: V-220972
Rule IDs: SV-220972r569187_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.

Fix: F-22676r555402_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny log on through Remote Desktop Services" to include the following. If Remote Desktop Services is not used by the organization, assign the Everyone group this right to prevent all access. Domain Systems Only: Enterprise Admins group Domain Admins group Local account (see Note below) All Systems: Guests group Privileged Access Workstations (PAWs) dedicated to the management of Active Directory are exempt from denying the Enterprise Admins and Domain Admins groups. (See the Windows Privileged Access Workstation STIG for PAW requirements.) Note: "Local account" is a built-in security group used to assign user rights and permissions to all local accounts.

b

The Enable computer and user accounts to be trusted for delegation user right must not be assigned to any groups or accounts.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN10-UR-000095
Vuln IDs: V-220973
Rule IDs: SV-220973r569187_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.

Fix: F-22677r555405_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.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN10-UR-000100
Vuln IDs: V-220974
Rule IDs: SV-220974r569187_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.

Fix: F-22678r555408_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Force shutdown from a remote system" to only include the following groups or accounts: Administrators

b

The Impersonate a client after authentication user right must only be assigned to Administrators, Service, Local Service, and Network Service.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN10-UR-000110
Vuln IDs: V-220975
Rule IDs: SV-220975r569187_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.

Fix: F-22679r555411_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Impersonate a client after authentication" to only include the following groups or accounts: Administrators LOCAL SERVICE NETWORK SERVICE SERVICE

b

The Load and unload device drivers user right must only be assigned to the Administrators group.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN10-UR-000120
Vuln IDs: V-220976
Rule IDs: SV-220976r569187_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.

Fix: F-22680r555414_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.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN10-UR-000125
Vuln IDs: V-220977
Rule IDs: SV-220977r569187_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.

Fix: F-22681r555417_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.

RMF Control: AU-9
Severity: M
CCI: CCI-000162
Version: WN10-UR-000130
Vuln IDs: V-220978
Rule IDs: SV-220978r569187_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.

Fix: F-22682r555420_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Manage auditing and security log" to only include the following groups or accounts: Administrators

b

The Modify firmware environment values user right must only be assigned to the Administrators group.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN10-UR-000140
Vuln IDs: V-220979
Rule IDs: SV-220979r569187_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.

Fix: F-22683r555423_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.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN10-UR-000145
Vuln IDs: V-220980
Rule IDs: SV-220980r569187_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.

Fix: F-22684r555426_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.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN10-UR-000150
Vuln IDs: V-220981
Rule IDs: SV-220981r569187_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.

Fix: F-22685r555429_fix

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

b

The Restore files and directories user right must only be assigned to the Administrators group.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN10-UR-000160
Vuln IDs: V-220982
Rule IDs: SV-220982r569187_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.

Fix: F-22686r555432_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.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN10-UR-000165
Vuln IDs: V-220983
Rule IDs: SV-220983r569187_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.

Fix: F-22687r555435_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

PowerShell Transcription must be enabled on Windows 10.

RMF Control: AU-3
Severity: M
CCI: CCI-000132
Version: WN10-CC-000327
Vuln IDs: V-250318
Rule IDs: SV-250318r793287_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 Transcription will record detailed information from the processing of PowerShell commands and scripts. This can provide additional detail when malware has run on a system.

Fix: F-53707r793286_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows PowerShell >> "Turn on PowerShell Transcription" to "Enabled". Specify the Transcript output directory to point to a Central Log Server or another secure location to prevent user access.

b

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

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN10-CC-000050
Vuln IDs: V-250319
Rule IDs: SV-250319r793294_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.

Fix: F-53708r793291_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