Windows Server 20122012 R2 Member Server STIG SCAP Benchmark V3R4 (SCAP)

b

The Server Message Block (SMB) v1 protocol must be disabled on Windows 2012 R2.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-00-000160
Vuln IDs: V-225259
Rule IDs: SV-225259r569185_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-26946r471120_fix

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". The system must be restarted for the changes to take effect.

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: WN12-00-000170
Vuln IDs: V-225260
Rule IDs: SV-225260r569185_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-26947r471123_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MS Security Guide >> "Configure SMBv1 Server" to "Disabled". The system must be restarted for the change to take effect. 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 Server Message Block (SMB) v1 protocol must be disabled on the SMB client.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-00-000180
Vuln IDs: V-225261
Rule IDs: SV-225261r569185_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-26948r471126_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". Configure the policy value for Computer Configuration >> Administrative Templates >> MS Security Guide >> "Configure SMBv1 client (extra setting needed for pre-Win8.1/2012R2)" to "Enabled" with the following three lines of text entered for "Configure LanmanWorkstation Dependencies": Bowser MRxSmb20 NSI The system must be restarted for the changes to take effect. These policy settings 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

Windows PowerShell 2.0 must not be installed on Windows 2012/2012 R2.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-00-000220
Vuln IDs: V-225265
Rule IDs: SV-225265r569185_rule

Windows PowerShell versions 4.0 (with a patch) and 5.x add advanced logging features that can provide additional detail when malware has been run on a system. Ensuring Windows PowerShell 2.0 is not installed as well mitigates against a downgrade attack that evades the advanced logging features of later Windows PowerShell versions.

Fix: F-26952r471138_fix

Windows PowerShell 2.0 is not installed by default. Uninstall it if it has been installed. Open "Windows PowerShell". Enter "Uninstall-WindowsFeature -Name PowerShell-v2". Alternately: Use the "Remove Roles and Features Wizard" and deselect "Windows PowerShell 2.0 Engine" under "Windows PowerShell".

b

Windows 2012 account lockout duration must be configured to 15 minutes or greater.

RMF Control: AC-7
Severity: M
CCI: CCI-002238
Version: WN12-AC-000001
Vuln IDs: V-225266
Rule IDs: SV-225266r852182_rule

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

Fix: F-26953r471141_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 meet minimum requirements.

RMF Control: AC-7
Severity: M
CCI: CCI-000044
Version: WN12-AC-000002
Vuln IDs: V-225267
Rule IDs: SV-225267r569185_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-26954r471144_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 reset period for the account lockout counter must be configured to 15 minutes or greater on Windows 2012.

RMF Control: AC-7
Severity: M
CCI: CCI-000044
Version: WN12-AC-000003
Vuln IDs: V-225268
Rule IDs: SV-225268r852183_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-26955r471147_fix

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

b

The password history must be configured to 24 passwords remembered.

RMF Control: IA-5
Severity: M
CCI: CCI-000200
Version: WN12-AC-000004
Vuln IDs: V-225269
Rule IDs: SV-225269r569185_rule

A system is more vulnerable to unauthorized access when system users recycle the same password several times without being required to change 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-26956r471150_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 meet requirements.

RMF Control: IA-5
Severity: M
CCI: CCI-000199
Version: WN12-AC-000005
Vuln IDs: V-225270
Rule IDs: SV-225270r569185_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-26957r471153_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 meet requirements.

RMF Control: IA-5
Severity: M
CCI: CCI-000198
Version: WN12-AC-000006
Vuln IDs: V-225271
Rule IDs: SV-225271r569185_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-26958r471156_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: WN12-AC-000007
Vuln IDs: V-225272
Rule IDs: SV-225272r569185_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-26959r471159_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 Windows password complexity policy must be enabled.

RMF Control: IA-5
Severity: M
CCI: CCI-000192
Version: WN12-AC-000008
Vuln IDs: V-225273
Rule IDs: SV-225273r569185_rule

The use of complex passwords increases their strength against attack. The built-in Windows password complexity policy requires passwords to contain at least 3 of the 4 types of characters (numbers, upper- and lower-case letters, and special characters), as well as preventing the inclusion of user names or parts of.

Fix: F-26960r471162_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: WN12-AC-000009
Vuln IDs: V-225274
Rule IDs: SV-225274r569185_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-26961r471165_fix

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

b

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

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN12-AU-000001
Vuln IDs: V-225275
Rule IDs: SV-225275r569185_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-26962r471168_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 Logon - Credential Validation failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN12-AU-000002
Vuln IDs: V-225276
Rule IDs: SV-225276r569185_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-26963r471171_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 Management - Other Account Management Events successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN12-AU-000015
Vuln IDs: V-225277
Rule IDs: SV-225277r852184_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Other Account Management Events records events such as the access of a password hash or the Password Policy Checking API being called.

Fix: F-26964r471174_fix

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

b

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

RMF Control: AC-2
Severity: M
CCI: CCI-000018
Version: WN12-AU-000017
Vuln IDs: V-225278
Rule IDs: SV-225278r852185_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 security groups, including changes in group members.

Fix: F-26965r471177_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 successes.

RMF Control: AC-2
Severity: M
CCI: CCI-000018
Version: WN12-AU-000019
Vuln IDs: V-225279
Rule IDs: SV-225279r852186_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-26966r471180_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 Account Management - User Account Management failures.

RMF Control: AC-2
Severity: M
CCI: CCI-000018
Version: WN12-AU-000020
Vuln IDs: V-225280
Rule IDs: SV-225280r852187_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-26967r471183_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 Detailed Tracking - Process Creation successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN12-AU-000023
Vuln IDs: V-225281
Rule IDs: SV-225281r569185_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-26968r471186_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

Windows Server 2012/2012 R2 must be configured to audit Logon/Logoff - Account Lockout successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN12-AU-000030
Vuln IDs: V-225282
Rule IDs: SV-225282r569185_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-26969r471189_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 "Success" selected.

b

Windows Server 2012/2012 R2 must be configured to audit Logon/Logoff - Account Lockout failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN12-AU-000031
Vuln IDs: V-225283
Rule IDs: SV-225283r569185_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-26970r471192_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: WN12-AU-000045
Vuln IDs: V-225284
Rule IDs: SV-225284r569185_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-26971r471195_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 successes.

RMF Control: AC-17
Severity: M
CCI: CCI-000067
Version: WN12-AU-000047
Vuln IDs: V-225285
Rule IDs: SV-225285r569185_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-26972r471198_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 - Logon failures.

RMF Control: AC-17
Severity: M
CCI: CCI-000067
Version: WN12-AU-000048
Vuln IDs: V-225286
Rule IDs: SV-225286r569185_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-26973r471201_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 - Special Logon successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN12-AU-000053
Vuln IDs: V-225287
Rule IDs: SV-225287r569185_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-26974r471204_fix

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

b

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

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN12-AU-000085
Vuln IDs: V-225292
Rule IDs: SV-225292r569185_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-26979r471219_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 - Audit Policy Change failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN12-AU-000086
Vuln IDs: V-225293
Rule IDs: SV-225293r852188_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-26980r471222_fix

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

b

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

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN12-AU-000087
Vuln IDs: V-225294
Rule IDs: SV-225294r852189_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-26981r471225_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: WN12-AU-000089
Vuln IDs: V-225295
Rule IDs: SV-225295r569185_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-26982r471228_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 successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN12-AU-000101
Vuln IDs: V-225296
Rule IDs: SV-225296r852190_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-26983r471231_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 Privilege Use - Sensitive Privilege Use failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN12-AU-000102
Vuln IDs: V-225297
Rule IDs: SV-225297r852191_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-26984r471234_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 System - IPsec Driver successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN12-AU-000103
Vuln IDs: V-225298
Rule IDs: SV-225298r569185_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-26985r471237_fix

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

b

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

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN12-AU-000104
Vuln IDs: V-225299
Rule IDs: SV-225299r569185_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-26986r471240_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

Windows Server 2012/2012 R2 must be configured to audit System - Other System Events successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN12-AU-000105
Vuln IDs: V-225300
Rule IDs: SV-225300r852192_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. Satisfies: SRG-OS-000458-GPOS-00203

Fix: F-26987r471243_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

Windows Server 2012/2012 R2 must be configured to audit System - Other System Events failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN12-AU-000106
Vuln IDs: V-225301
Rule IDs: SV-225301r852193_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. Satisfies: SRG-OS-000458-GPOS-00203

Fix: F-26988r471246_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: WN12-AU-000107
Vuln IDs: V-225302
Rule IDs: SV-225302r852194_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-26989r471249_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: WN12-AU-000109
Vuln IDs: V-225303
Rule IDs: SV-225303r852195_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-26990r471252_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 successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN12-AU-000111
Vuln IDs: V-225304
Rule IDs: SV-225304r852196_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-26991r471255_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 system must be configured to audit System - System Integrity failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN12-AU-000112
Vuln IDs: V-225305
Rule IDs: SV-225305r852197_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-26992r471258_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

Event Viewer must be protected from unauthorized modification and deletion.

RMF Control: AU-9
Severity: M
CCI: CCI-001494
Version: WN12-AU-000213
Vuln IDs: V-225313
Rule IDs: SV-225313r569185_rule

Protecting audit information also includes identifying and protecting the tools used to view and manipulate log data. Therefore, protecting audit tools is necessary to prevent unauthorized operation on audit information. Operating systems providing tools to interface with audit information will leverage user permissions and roles identifying the user accessing the tools and the corresponding rights the user enjoys in order to make access decisions regarding the modification or deletion of audit tools.

Fix: F-27000r471282_fix

Ensure only TrustedInstaller has permissions to change or modify Event Viewer ("%SystemRoot%\SYSTEM32\Eventvwr.exe). The default permissions below satisfy this requirement. TrustedInstaller - Full Control Administrators, SYSTEM, Users, ALL APPLICATION PACKAGES - Read & Execute

b

The Mapper I/O network protocol (LLTDIO) driver must be disabled.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-CC-000001
Vuln IDs: V-225314
Rule IDs: SV-225314r569185_rule

The Mapper I/O network protocol (LLTDIO) driver allows the discovery of the connected network and allows various options to be enabled. Disabling this helps protect the system from potentially discovering and connecting to unauthorized devices.

Fix: F-27001r471285_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> Network -> Link-Layer Topology Discovery -> "Turn on Mapper I/O (LLTDIO) driver" to "Disabled".

b

The Responder network protocol driver must be disabled.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-CC-000002
Vuln IDs: V-225315
Rule IDs: SV-225315r569185_rule

The Responder network protocol driver allows a computer to be discovered and located on a network. Disabling this helps protect the system from potentially being discovered and connected to by unauthorized devices.

Fix: F-27002r471288_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> Network -> Link-Layer Topology Discovery -> "Turn on Responder (RSPNDR) driver" to "Disabled".

b

Windows Peer-to-Peer networking services must be turned off.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-CC-000003
Vuln IDs: V-225316
Rule IDs: SV-225316r569185_rule

Peer-to-Peer applications can allow unauthorized access to a system and exposure of sensitive data. This setting will turn off the Microsoft Peer-to-Peer Networking Service.

Fix: F-27003r471291_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> Network -> Microsoft Peer-to-Peer Networking Services -> "Turn off Microsoft Peer-to-Peer Networking Services" to "Enabled".

b

Network Bridges must be prohibited in Windows.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-CC-000004
Vuln IDs: V-225317
Rule IDs: SV-225317r569185_rule

A Network Bridge can connect two or more network segments, allowing unauthorized access or exposure of sensitive data. This setting prevents a Network Bridge from being installed and configured.

Fix: F-27004r471294_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> Network -> Network Connections -> "Prohibit installation and configuration of Network Bridge on your DNS domain network" to "Enabled".

a

Domain users must be required to elevate when setting a networks location.

RMF Control: SC-3
Severity: L
CCI: CCI-001084
Version: WN12-CC-000005
Vuln IDs: V-225318
Rule IDs: SV-225318r569185_rule

Selecting an incorrect network location may allow greater exposure of a system. Elevation is required by default on nondomain systems to change network location. This setting configures elevation to also be required on domain-joined systems.

Fix: F-27005r471297_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> Network -> Network Connections -> "Require domain users to elevate when setting a network's location" to "Enabled".

a

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

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN12-CC-000006
Vuln IDs: V-225319
Rule IDs: SV-225319r569185_rule

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

Fix: F-27006r471300_fix

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

a

IP stateless autoconfiguration limits state must be enabled.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN12-CC-000011
Vuln IDs: V-225324
Rule IDs: SV-225324r569185_rule

IP stateless autoconfiguration could configure routes that circumvent preferred routes if not limited.

Fix: F-27011r471315_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> Network -> TCPIP Settings -> Parameters -> "Set IP Stateless Autoconfiguration Limits State" to "Enabled".

b

The configuration of wireless devices using Windows Connect Now must be disabled.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-CC-000012
Vuln IDs: V-225325
Rule IDs: SV-225325r569185_rule

Windows Connect Now allows the discovery and configuration of devices over wireless. Wireless devices must be managed. If a rogue device is connected to a system, there is potential for sensitive information to be compromised.

Fix: F-27012r471318_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> Network -> Windows Connect Now -> "Configuration of wireless settings using Windows Connect Now" to "Disabled".

b

The Windows Connect Now wizards must be disabled.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-CC-000013
Vuln IDs: V-225326
Rule IDs: SV-225326r569185_rule

Windows Connect Now provides wizards for tasks such as "Set up a wireless router or access point" and must not be available to users. Functions such as these may allow unauthorized connections to a system and the potential for sensitive information to be compromised.

Fix: F-27013r471321_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> Network -> Windows Connect Now -> "Prohibit access of the Windows Connect Now wizards" to "Enabled".

a

Windows Update must be prevented from searching for point and print drivers.

RMF Control: CM-11
Severity: L
CCI: CCI-001812
Version: WN12-CC-000016
Vuln IDs: V-225327
Rule IDs: SV-225327r852200_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 Windows from searching Windows Update for point and print drivers. Only the local driver store and server driver cache will be searched.

Fix: F-27014r471324_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> Printers -> "Extend Point and Print connection to search Windows Update" to "Disabled".

a

Optional component installation and component repair must be prevented from using Windows Update.

RMF Control: CM-11
Severity: L
CCI: CCI-001812
Version: WN12-CC-000018
Vuln IDs: V-225328
Rule IDs: SV-225328r852201_rule

Uncontrolled system updates can introduce issues to a system. Obtaining update components from an outside source may also potentially provide sensitive information outside of the enterprise. Optional component installation or repair must be obtained from an internal source.

Fix: F-27015r471327_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> "Specify settings for optional component installation and component repair" to "Enabled" and with "Never attempt to download payload from Windows Update" selected.

b

Remote access to the Plug and Play interface must be disabled for device installation.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-CC-000019
Vuln IDs: V-225329
Rule IDs: SV-225329r569185_rule

Remote access to the Plug and Play interface could potentially allow connections by unauthorized devices. This setting configures remote access to the Plug and Play interface and must be disabled.

Fix: F-27016r471330_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Device Installation -> "Allow remote access to the Plug and Play interface" to "Disabled".

a

An Error Report must not be sent when a generic device driver is installed.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: WN12-CC-000020
Vuln IDs: V-225330
Rule IDs: SV-225330r569185_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 an error report from being sent when a generic device driver is installed.

Fix: F-27017r471333_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Device Installation -> "Do not send a Windows error report when a generic driver is installed on a device" to "Enabled".

a

A system restore point must be created when a new device driver is installed.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN12-CC-000021
Vuln IDs: V-225331
Rule IDs: SV-225331r569185_rule

A system restore point allows a rollback if an issue is encountered when a new device driver is installed.

Fix: F-27018r471336_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Device Installation -> "Prevent creation of a system restore point during device activity that would normally prompt creation of a restore point" to "Disabled".

a

Device metadata retrieval from the Internet must be prevented.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: WN12-CC-000022
Vuln IDs: V-225332
Rule IDs: SV-225332r569185_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 Windows from retrieving device metadata from the Internet.

Fix: F-27019r471339_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Device Installation >> "Prevent device metadata retrieval from the Internet" to "Enabled".

a

Windows must be prevented from sending an error report when a device driver requests additional software during installation.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: WN12-CC-000023
Vuln IDs: V-225333
Rule IDs: SV-225333r569185_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 Windows from sending an error report to Microsoft when a device driver requests additional software during installation.

Fix: F-27020r471342_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Device Installation -> "Prevent Windows from sending an error report when a device driver requests additional software during installation" to "Enabled".

a

Device driver searches using Windows Update must be prevented.

RMF Control: CM-11
Severity: L
CCI: CCI-001812
Version: WN12-CC-000024
Vuln IDs: V-225334
Rule IDs: SV-225334r852202_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 system from searching Windows Update for device drivers.

Fix: F-27021r471345_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Device Installation -> "Specify search order for device driver source locations" to "Enabled: Do not search Windows Update".

a

Device driver updates must only search managed servers, not Windows Update.

RMF Control: CM-11
Severity: L
CCI: CCI-001812
Version: WN12-CC-000025
Vuln IDs: V-225335
Rule IDs: SV-225335r852203_rule

Uncontrolled system updates can introduce issues to a system. Obtaining update components from an outside source may also potentially provide sensitive information outside of the enterprise. Device driver updates must be obtained from an internal source.

Fix: F-27022r471348_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Device Installation -> "Specify the search server for device driver updates" to "Enabled" with "Search Managed Server" selected.

a

Users must not be prompted to search Windows Update for device drivers.

RMF Control: CM-11
Severity: L
CCI: CCI-001812
Version: WN12-CC-000026
Vuln IDs: V-225336
Rule IDs: SV-225336r852204_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 users from being prompted to search Windows Update for device drivers.

Fix: F-27023r471351_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Driver Installation -> "Turn off Windows Update device driver search prompt" to "Enabled".

b

Early Launch Antimalware, Boot-Start Driver Initialization Policy must be enabled and configured to only Good and Unknown.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN12-CC-000027
Vuln IDs: V-225337
Rule IDs: SV-225337r569185_rule

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

Fix: F-27024r471354_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Early Launch Antimalware -> "Boot-Start Driver Initialization Policy" to "Enabled" with "Good and Unknown" selected.

b

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

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN12-CC-000028
Vuln IDs: V-225338
Rule IDs: SV-225338r569185_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-27025r471357_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

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

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN12-CC-000029
Vuln IDs: V-225339
Rule IDs: SV-225339r569185_rule

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

Fix: F-27026r471360_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Group Policy -> "Turn off background refresh of Group Policy" to "Disabled".

b

Access to the Windows Store must be turned off.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN12-CC-000030
Vuln IDs: V-225340
Rule IDs: SV-225340r569185_rule

Uncontrolled installation of applications can introduce various issues, including system instability, and allow access to sensitive information. Installation of applications must be controlled by the enterprise. Turning off access to the Windows Store will limit access to publicly available applications.

Fix: F-27027r471363_fix

If the \Windows\WinStore directory exists, configure the policy value for Computer Configuration >> Administrative Templates >> System >> Internet Communication Management >> Internet Communication settings >> "Turn off access to the Store" to "Enabled". Alternately, uninstall the "Desktop Experience" feature from Windows 2012. This is located under "User Interfaces and Infrastructure" in the "Add Roles and Features Wizard". The \Windows\WinStore directory may need to be manually deleted after this.

b

Downloading print driver packages over HTTP must be prevented.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-CC-000032
Vuln IDs: V-225341
Rule IDs: SV-225341r569185_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-27028r471366_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".

a

Event Viewer Events.asp links must be turned off.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: WN12-CC-000033
Vuln IDs: V-225342
Rule IDs: SV-225342r569185_rule

Viewing events is a function of administrators, who must not access the internet with privileged accounts. This setting will disable Events.asp hyperlinks in Event Viewer to prevent links to the internet from within events.

Fix: F-27029r471369_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Internet Communication Management -> Internet Communication settings -> "Turn off Event Viewer "Events.asp" links" to "Enabled".

a

Errors in handwriting recognition on tablet PCs must not be reported to Microsoft.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: WN12-CC-000035
Vuln IDs: V-225343
Rule IDs: SV-225343r569185_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 errors in handwriting recognition on tablet PCs from being reported to Microsoft.

Fix: F-27030r471372_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Internet Communication Management -> Internet Communication settings -> "Turn off handwriting recognition error reporting" to "Enabled".

b

The Internet File Association service must be turned off.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-CC-000038
Vuln IDs: V-225344
Rule IDs: SV-225344r569185_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 unhandled file associations from using the Microsoft Web service to find an application.

Fix: F-27031r471375_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Internet Communication Management -> Internet Communication settings -> "Turn off Internet File Association service" to "Enabled".

b

Printing over HTTP must be prevented.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-CC-000039
Vuln IDs: V-225345
Rule IDs: SV-225345r569185_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-27032r471378_fix

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

b

The Windows Customer Experience Improvement Program must be disabled.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-CC-000045
Vuln IDs: V-225346
Rule IDs: SV-225346r569185_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 ensures the Windows Customer Experience Improvement Program is disabled so information is not passed to the vendor.

Fix: F-27033r471381_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Internet Communication Management -> Internet Communication Settings -> "Turn off Windows Customer Experience Improvement Program" to "Enabled".

b

Windows must be prevented from using Windows Update to search for drivers.

RMF Control: CM-11
Severity: M
CCI: CCI-001812
Version: WN12-CC-000047
Vuln IDs: V-225347
Rule IDs: SV-225347r852205_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 searching Windows Update for device drivers when no local drivers for a device are present.

Fix: F-27034r471384_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Internet Communication Management -> Internet Communication settings -> "Turn off Windows Update device driver searching" to "Enabled".

b

Copying of user input methods to the system account for sign-in must be prevented.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-CC-000048
Vuln IDs: V-225348
Rule IDs: SV-225348r569185_rule

Allowing different input methods for sign-in could open different avenues of attack. User input methods must be restricted to those enabled for the system account at sign-in.

Fix: F-27035r471387_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Locale Services -> "Disallow copying of user input methods to the system account for sign-in" to "Enabled".

b

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

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-CC-000051
Vuln IDs: V-225349
Rule IDs: SV-225349r569185_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-27036r471390_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Logon -> "Enumerate local users on domain-joined computers" to "Disabled".

b

App notifications on the lock screen must be turned off.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-CC-000052
Vuln IDs: V-225350
Rule IDs: SV-225350r569185_rule

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

Fix: F-27037r471393_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Logon -> "Turn off app notifications on the lock screen" to "Enabled".

b

Users must be prompted to authenticate on resume from sleep (on battery).

RMF Control: IA-11
Severity: M
CCI: CCI-002038
Version: WN12-CC-000054
Vuln IDs: V-225351
Rule IDs: SV-225351r852206_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-27038r471396_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 to authenticate on resume from sleep (plugged in).

RMF Control: IA-11
Severity: M
CCI: CCI-002038
Version: WN12-CC-000055
Vuln IDs: V-225352
Rule IDs: SV-225352r852207_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-27039r471399_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".

b

The system must be configured to prevent unsolicited remote assistance offers.

RMF Control: SC-4
Severity: M
CCI: CCI-001090
Version: WN12-CC-000058
Vuln IDs: V-225353
Rule IDs: SV-225353r569185_rule

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

Fix: F-27040r471402_fix

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

c

Solicited Remote Assistance must not be allowed.

RMF Control: SC-4
Severity: H
CCI: CCI-001090
Version: WN12-CC-000059
Vuln IDs: V-225354
Rule IDs: SV-225354r569185_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-27041r471405_fix

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

a

Remote Assistance log files must be generated.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN12-CC-000062
Vuln IDs: V-225355
Rule IDs: SV-225355r569185_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. This setting will turn on session logging for Remote Assistance connections.

Fix: F-27042r471408_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Remote Assistance -> "Turn on session logging" to "Enabled".

b

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

RMF Control: IA-3
Severity: M
CCI: CCI-001967
Version: WN12-CC-000064-MS
Vuln IDs: V-225356
Rule IDs: SV-225356r852208_rule

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

Fix: F-27043r471411_fix

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

a

The detection of compatibility issues for applications and drivers must be turned off.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: WN12-CC-000065
Vuln IDs: V-225357
Rule IDs: SV-225357r569185_rule

Some features may communicate with the vendor, sending system information or downloading data or components for the feature. Turning off this feature will prevent potentially sensitive information from being sent outside the enterprise and uncontrolled updates to the system.

Fix: F-27044r471414_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Troubleshooting and Diagnostics -> Application Compatibility Diagnostics -> "Detect compatibility issues for applications and drivers" to "Disabled".

a

Microsoft Support Diagnostic Tool (MSDT) interactive communication with Microsoft must be prevented.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: WN12-CC-000066
Vuln IDs: V-225358
Rule IDs: SV-225358r569185_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 MSDT from communicating with and sending collected data to Microsoft, the default support provider.

Fix: F-27045r471417_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Troubleshooting and Diagnostics -> Microsoft Support Diagnostic Tool -> "Microsoft Support Diagnostic Tool: Turn on MSDT interactive communication with support provider" to "Disabled".

a

Access to Windows Online Troubleshooting Service (WOTS) must be prevented.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: WN12-CC-000067
Vuln IDs: V-225359
Rule IDs: SV-225359r569185_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 users from searching troubleshooting content on Microsoft servers. Only local content will be available.

Fix: F-27046r471420_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Troubleshooting and Diagnostics -> Scripted Diagnostics -> "Troubleshooting: Allow users to access online troubleshooting content on Microsoft servers from the Troubleshooting Control Panel (via the Windows Online Troubleshooting Service - WOTS)" to "Disabled".

a

Responsiveness events must be prevented from being aggregated and sent to Microsoft.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: WN12-CC-000068
Vuln IDs: V-225360
Rule IDs: SV-225360r569185_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 responsiveness events from being aggregated and sent to Microsoft.

Fix: F-27047r471423_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Troubleshooting and Diagnostics -> Windows Performance PerfTrack -> "Enable/Disable PerfTrack" to "Disabled".

a

Trusted app installation must be enabled to allow for signed enterprise line of business apps.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN12-CC-000070
Vuln IDs: V-225362
Rule IDs: SV-225362r569185_rule

Enabling trusted app installation allows for enterprise line of business Windows 8 type apps. A trusted app package is one that is signed with a certificate chain that can be successfully validated in the enterprise. Configuring this ensures enterprise line of business apps are accessible.

Fix: F-27049r471429_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> App Package Deployment -> "Allow all trusted apps to install" 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: WN12-CC-000071
Vuln IDs: V-225363
Rule IDs: SV-225363r569185_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-27050r471432_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: WN12-CC-000072
Vuln IDs: V-225364
Rule IDs: SV-225364r852210_rule

Allowing Autoplay to execute may introduce malicious code to a system. Autoplay begins reading from a drive as soon as media is inserted into 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-27051r471435_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: WN12-CC-000073
Vuln IDs: V-225365
Rule IDs: SV-225365r852211_rule

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

Fix: F-27052r471438_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: WN12-CC-000074
Vuln IDs: V-225366
Rule IDs: SV-225366r852212_rule

Allowing Autoplay to execute may introduce malicious code to a system. Autoplay begins reading from a drive as soon media is inserted into 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. Enabling this policy disables Autoplay on all drives.

Fix: F-27053r471441_fix

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

b

The use of biometrics must be disabled.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-CC-000075
Vuln IDs: V-225367
Rule IDs: SV-225367r569185_rule

Allowing biometrics may bypass required authentication methods. Biometrics may only be used as an additional authentication factor where an enhanced strength of identity credential is necessary or desirable. Additional factors must be met per DoD policy.

Fix: F-27054r471444_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Biometrics -> "Allow the use of biometrics" to "Disabled".

b

The password reveal button must not be displayed.

RMF Control: IA-6
Severity: M
CCI: CCI-000206
Version: WN12-CC-000076
Vuln IDs: V-225368
Rule IDs: SV-225368r569185_rule

Visible passwords may be seen by nearby persons, compromising them. The password reveal button can be used to display an entered password and must not be allowed.

Fix: F-27055r471447_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Credential User Interface -> "Do not display the password reveal button" to "Enabled".

b

Administrator accounts must not be enumerated during elevation.

RMF Control: SC-3
Severity: M
CCI: CCI-001084
Version: WN12-CC-000077
Vuln IDs: V-225369
Rule IDs: SV-225369r569185_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 enter in a username and password to elevate a running application.

Fix: F-27056r471450_fix

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

b

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

RMF Control: AU-4
Severity: M
CCI: CCI-001849
Version: WN12-CC-000084
Vuln IDs: V-225370
Rule IDs: SV-225370r852213_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-27057r471453_fix

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 196608 KB or greater.

RMF Control: AU-4
Severity: M
CCI: CCI-001849
Version: WN12-CC-000085
Vuln IDs: V-225371
Rule IDs: SV-225371r852214_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-27058r471456_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 "196608" or greater.

b

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

RMF Control: AU-4
Severity: M
CCI: CCI-001849
Version: WN12-CC-000086
Vuln IDs: V-225372
Rule IDs: SV-225372r852215_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-27059r471459_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Event Log Service >> Setup >> "Specify the maximum log file size (KB)" to "Enabled" with a "Maximum Log Size (KB)" of "32768" or greater.

b

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

RMF Control: AU-4
Severity: M
CCI: CCI-001849
Version: WN12-CC-000087
Vuln IDs: V-225373
Rule IDs: SV-225373r852216_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-27060r471462_fix

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 SmartScreen must be enabled on Windows 2012/2012 R2.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-CC-000088
Vuln IDs: V-225374
Rule IDs: SV-225374r569185_rule

Windows SmartScreen helps protect systems from programs downloaded from the Internet that may be malicious. Warning a user before running downloaded unknown software, at minimum, will help prevent potentially malicious programs from executing.

Fix: F-27061r471465_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> File Explorer >> "Configure Windows SmartScreen" to "Enabled" with either "Give user a warning before running downloaded unknown software" or "Require approval from an administrator before running downloaded unknown software" selected. Microsoft has changed this setting several times in the Windows 10 administrative templates, which will affect group policies in a domain if later templates are used. v1607 of Windows 10 and Windows Server 2016 changed the setting to only Enabled or Disabled without additional selections. Enabled is effectively "Give user a warning…". v1703 of Windows 10 or later administrative templates changed the policy name to "Configure Windows Defender SmartScreen", and the selectable options are "Warn" and "Warn and prevent bypass". When either of these are applied to a Windows 2012/2012 R2 system, it will configure the registry equivalent of "Give user a warning…").

b

Explorer Data Execution Prevention must be enabled.

RMF Control: SI-16
Severity: M
CCI: CCI-002824
Version: WN12-CC-000089
Vuln IDs: V-225375
Rule IDs: SV-225375r852217_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-27062r471468_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> File Explorer -> "Turn off Data Execution Prevention for Explorer" to "Disabled".

a

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

RMF Control: SC-5
Severity: L
CCI: CCI-002385
Version: WN12-CC-000090
Vuln IDs: V-225376
Rule IDs: SV-225376r852218_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-27063r471471_fix

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

b

File Explorer shell protocol must run in protected mode.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN12-CC-000091
Vuln IDs: V-225377
Rule IDs: SV-225377r569185_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-27064r471474_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> File Explorer -> "Turn off shell protocol protected mode" to "Disabled".

b

The location feature must be turned off.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-CC-000095
Vuln IDs: V-225378
Rule IDs: SV-225378r569185_rule

The location service on systems may allow sensitive data to be used by applications on the system. This should be turned off unless explicitly allowed for approved systems/applications.

Fix: F-27065r471477_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Location and Sensors -> "Turn off location" to "Enabled". If location services are approved by the organization for a device, this must be documented.

b

Passwords must not be saved in the Remote Desktop Client.

RMF Control: IA-11
Severity: M
CCI: CCI-002038
Version: WN12-CC-000096
Vuln IDs: V-225379
Rule IDs: SV-225379r852219_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-27066r471480_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. (Remote Desktop Services Role).

RMF Control: SC-4
Severity: M
CCI: CCI-001090
Version: WN12-CC-000098
Vuln IDs: V-225380
Rule IDs: SV-225380r569185_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-27067r471483_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: WN12-CC-000099
Vuln IDs: V-225381
Rule IDs: SV-225381r852220_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-27068r471486_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

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: WN12-CC-000100
Vuln IDs: V-225382
Rule IDs: SV-225382r852221_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-27069r471489_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

Remote Desktop Services must delete temporary folders when a session is terminated.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN12-CC-000103
Vuln IDs: V-225383
Rule IDs: SV-225383r569185_rule

Remote desktop session temporary folders must always be deleted after a session is over to prevent hard disk clutter and potential leakage of information. This setting controls the deletion of the temporary folders when the session is terminated.

Fix: F-27070r471492_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Remote Desktop Services -> Remote Desktop Session Host -> Temporary Folders -> "Do not delete temp folder upon exit" to "Disabled".

b

Remote Desktop Services must be configured to use session-specific temporary folders.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN12-CC-000104
Vuln IDs: V-225384
Rule IDs: SV-225384r569185_rule

If a communal temporary folder is used for remote desktop sessions, it might be possible for users to access other users' temporary folders. If this setting is enabled, only one temporary folder is used for all remote desktop sessions. Per session temporary folders must be established.

Fix: F-27071r471495_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Remote Desktop Services -> Remote Desktop Session Host -> Temporary Folders -> "Do not use temporary folders per session" to "Disabled".

b

Attachments must be prevented from being downloaded from RSS feeds.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN12-CC-000105
Vuln IDs: V-225385
Rule IDs: SV-225385r569185_rule

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

Fix: F-27072r471498_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 be turned off.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-CC-000106
Vuln IDs: V-225386
Rule IDs: SV-225386r569185_rule

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

Fix: F-27073r471501_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> RSS Feeds -> "Turn on Basic feed authentication over HTTP" to "Disabled".

b

Users must be prevented from changing installation options.

RMF Control: CM-11
Severity: M
CCI: CCI-001812
Version: WN12-CC-000115
Vuln IDs: V-225389
Rule IDs: SV-225389r852222_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-27076r471510_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 option must be disabled.

RMF Control: CM-11
Severity: H
CCI: CCI-001812
Version: WN12-CC-000116
Vuln IDs: V-225390
Rule IDs: SV-225390r852223_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-27077r471513_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: WN12-CC-000117
Vuln IDs: V-225391
Rule IDs: SV-225391r569185_rule

Users must be aware of attempted program installations. This setting ensures users are notified if a web-based program attempts to install software.

Fix: F-27078r471516_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Windows Installer -> "Prevent Internet Explorer security prompt for Windows Installer scripts" to "Disabled".

a

Nonadministrators must be prevented from applying vendor-signed updates.

RMF Control: CM-11
Severity: L
CCI: CCI-001812
Version: WN12-CC-000118
Vuln IDs: V-225392
Rule IDs: SV-225392r852224_rule

Uncontrolled system updates can introduce issues to a system. This setting will prevent users from applying vendor-signed updates (though they may be from a trusted source).

Fix: F-27079r471519_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Windows Installer -> "Prohibit non-administrators from applying vendor signed updates" to "Enabled".

b

Windows Media Digital Rights Management (DRM) must be prevented from accessing the Internet.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-CC-000120
Vuln IDs: V-225393
Rule IDs: SV-225393r569185_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 check verifies that Windows Media DRM will be prevented from accessing the Internet.

Fix: F-27080r471522_fix

Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Windows Media Digital Rights Management -> "Prevent Windows Media DRM Internet Access" to "Enabled".

a

Users must not be presented with Privacy and Installation options on first use of Windows Media Player.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN12-CC-000121
Vuln IDs: V-225394
Rule IDs: SV-225394r569185_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 users from being presented with Privacy and Installation options on first use of Windows Media Player, which could enable some communication with the vendor.

Fix: F-27081r471525_fix

If Windows Media Player is installed, configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Windows Media Player -> "Do Not Show First Use Dialog Boxes" to "Enabled".

b

Windows Media Player must be configured to prevent automatic checking for updates.

RMF Control: CM-11
Severity: M
CCI: CCI-001812
Version: WN12-CC-000122
Vuln IDs: V-225395
Rule IDs: SV-225395r852225_rule

Uncontrolled system updates can introduce issues to a system. The automatic check for updates performed by Windows Media Player must be disabled to ensure a constant platform and to prevent the introduction of unknown\untested software on the system.

Fix: F-27082r471528_fix

If Windows Media Player is installed, configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Windows Media Player -> "Prevent Automatic Updates" to "Enabled".

c

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

RMF Control: MA-4
Severity: H
CCI: CCI-000877
Version: WN12-CC-000123
Vuln IDs: V-225396
Rule IDs: SV-225396r569185_rule

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

Fix: F-27083r471531_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: WN12-CC-000124
Vuln IDs: V-225397
Rule IDs: SV-225397r852226_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-27084r471534_fix

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

b

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

RMF Control: MA-4
Severity: M
CCI: CCI-000877
Version: WN12-CC-000125
Vuln IDs: V-225398
Rule IDs: SV-225398r569185_rule

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

Fix: F-27085r471537_fix

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

c

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

RMF Control: MA-4
Severity: H
CCI: CCI-000877
Version: WN12-CC-000126
Vuln IDs: V-225399
Rule IDs: SV-225399r569185_rule

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

Fix: F-27086r471540_fix

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

b

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

RMF Control: MA-4
Severity: M
CCI: CCI-002890
Version: WN12-CC-000127
Vuln IDs: V-225400
Rule IDs: SV-225400r852227_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-27087r471543_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: WN12-CC-000128
Vuln IDs: V-225401
Rule IDs: SV-225401r852228_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-27088r471546_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 Remote Desktop Session Host must require secure RPC communications.

RMF Control: AC-17
Severity: M
CCI: CCI-001453
Version: WN12-CC-000130
Vuln IDs: V-225402
Rule IDs: SV-225402r569185_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-27089r471549_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

Users must be prevented from mapping local COM ports and redirecting data from the Remote Desktop Session Host to local COM ports. (Remote Desktop Services Role).

RMF Control: AC-17
Severity: M
CCI: CCI-002314
Version: WN12-CC-000132
Vuln IDs: V-225404
Rule IDs: SV-225404r852229_rule

Preventing the redirection of Remote Desktop session data to a client computer's COM ports helps reduce possible exposure of sensitive data.

Fix: F-27091r471555_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 COM port redirection" to "Enabled".

b

Users must be prevented from mapping local LPT ports and redirecting data from the Remote Desktop Session Host to local LPT ports. (Remote Desktop Services Role).

RMF Control: AC-17
Severity: M
CCI: CCI-002314
Version: WN12-CC-000133
Vuln IDs: V-225405
Rule IDs: SV-225405r852230_rule

Preventing the redirection of Remote Desktop session data to a client computer's LPT ports helps reduce possible exposure of sensitive data.

Fix: F-27092r471558_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 LPT port redirection" to "Enabled".

b

The system must be configured to ensure smart card devices can be redirected to the Remote Desktop session. (Remote Desktop Services Role).

RMF Control: AC-17
Severity: M
CCI: CCI-002314
Version: WN12-CC-000134
Vuln IDs: V-225406
Rule IDs: SV-225406r852231_rule

Enabling the redirection of smart card devices allows their use within Remote Desktop sessions.

Fix: F-27093r471561_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 smart card device redirection" to "Disabled".

b

Users must be prevented from redirecting Plug and Play devices to the Remote Desktop Session Host. (Remote Desktop Services Role).

RMF Control: AC-17
Severity: M
CCI: CCI-002314
Version: WN12-CC-000135
Vuln IDs: V-225407
Rule IDs: SV-225407r852232_rule

Preventing the redirection of Plug and Play devices in Remote Desktop sessions helps reduce possible exposure of sensitive data.

Fix: F-27094r471564_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 supported Plug and Play device redirection" to "Enabled".

b

Windows 2012 R2 must include command line data in process creation events.

RMF Control: AU-3
Severity: M
CCI: CCI-000135
Version: WN12-CC-000139
Vuln IDs: V-225410
Rule IDs: SV-225410r569185_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. Satisfies: SRG-OS-000042-GPOS-00021

Fix: F-27097r471573_fix

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

c

Systems must be maintained at a supported service pack level.

RMF Control: CM-6
Severity: H
CCI: CCI-000366
Version: WN12-GE-000001
Vuln IDs: V-225417
Rule IDs: SV-225417r569185_rule

Systems at unsupported service packs or releases will not receive security updates for new vulnerabilities, which leave them subject to exploitation. Systems must be maintained at a service pack level supported by the vendor with new security updates.

Fix: F-27104r471594_fix

Update the system to a supported release or service pack level.

b

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

RMF Control: IA-5
Severity: M
CCI: CCI-000185
Version: WN12-PK-000001
Vuln IDs: V-225441
Rule IDs: SV-225441r860007_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-27128r819687_fix

Install the DoD Root CA certificates: 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 DoD Interoperability Root CA cross-certificates must be installed into the Untrusted Certificates Store on unclassified systems.

RMF Control: IA-5
Severity: M
CCI: CCI-000185
Version: WN12-PK-000003
Vuln IDs: V-225442
Rule IDs: SV-225442r860005_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-27129r819690_fix

Install the DoD Interoperability Root CA cross-certificates on unclassified systems. Issued To - Issued By - Thumbprint DoD Root CA 3 - DoD Interoperability Root CA 2 - 49CBE933151872E17C8EAE7F0ABA97FB610F6477 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 into the Untrusted Certificates Store on unclassified systems.

RMF Control: IA-5
Severity: M
CCI: CCI-000185
Version: WN12-PK-000004
Vuln IDs: V-225443
Rule IDs: SV-225443r852241_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-27130r852240_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.

c

Standard user accounts must only have Read permissions to the Winlogon registry key.

RMF Control: AC-6
Severity: H
CCI: CCI-002235
Version: WN12-RG-000001
Vuln IDs: V-225444
Rule IDs: SV-225444r852242_rule

Permissions on the Winlogon registry key must only allow privileged accounts to change registry values. If standard users have these permissions, there is a potential for programs to run with elevated privileges when a privileged user logs on to the system.

Fix: F-27131r471675_fix

Maintain permissions at least as restrictive as the defaults listed below for the "WinLogon" registry key. It is recommended to not change the permissions from the defaults. HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\ The following are the same for each permission listed: Type - Allow Inherited from - MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion Applies to - This key and subkeys Columns: Principal - Access TrustedInstaller - Full Control SYSTEM - Full Control Administrators - Full Control Users - Read ALL APPLICATION PACKAGES - Read

c

Standard user accounts must only have Read permissions to the Active Setup\Installed Components registry key.

RMF Control: AC-6
Severity: H
CCI: CCI-002235
Version: WN12-RG-000002
Vuln IDs: V-225445
Rule IDs: SV-225445r852243_rule

Permissions on the Active Setup\Installed Components registry key must only allow privileged accounts to add or change registry values. If standard user accounts have these permissions, there is a potential for programs to run with elevated privileges when a privileged user logs on to the system.

Fix: F-27132r471678_fix

Maintain the default permissions of the following registry keys: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\ HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\ (64-bit systems only) Users - Read Administrators - Full Control SYSTEM - Full Control CREATOR OWNER - Full Control (Subkeys only) ALL APPLICATION PACKAGES - Read

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: WN12-RG-000003-MS
Vuln IDs: V-225446
Rule IDs: SV-225446r569185_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 local administrator accounts will prevent the elevated privileges of these accounts from being used over the network.

Fix: F-27133r471681_fix

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

c

Anonymous access to the registry must be restricted.

RMF Control: AC-6
Severity: H
CCI: CCI-002235
Version: WN12-RG-000004
Vuln IDs: V-225447
Rule IDs: SV-225447r852244_rule

The registry is integral to the function, security, and stability of the Windows system. Some processes may require anonymous access to the registry. This must be limited to properly protect the system.

Fix: F-27134r471684_fix

Maintain permissions at least as restrictive as the defaults listed below for the "winreg" registry key. It is recommended to not change the permissions from the defaults. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurePipeServers\winreg\ The following are the same for each permission listed: Type - Allow Inherited from - None Columns: Principal - Access - Applies to Administrators - Full Control - This key and subkeys Backup Operators - Read - This key only LOCAL SERVICE - Read - This key and subkeys

b

The built-in guest account must be disabled.

RMF Control: IA-8
Severity: M
CCI: CCI-000804
Version: WN12-SO-000003
Vuln IDs: V-225448
Rule IDs: SV-225448r569185_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-27135r471687_fix

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

c

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

RMF Control: CM-6
Severity: H
CCI: CCI-000366
Version: WN12-SO-000004
Vuln IDs: V-225449
Rule IDs: SV-225449r569185_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-27136r471690_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: WN12-SO-000005
Vuln IDs: V-225450
Rule IDs: SV-225450r569185_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-27137r471693_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: WN12-SO-000006
Vuln IDs: V-225451
Rule IDs: SV-225451r569185_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-27138r471696_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

Auditing the Access of Global System Objects must be turned off.

RMF Control: SC-5
Severity: M
CCI: CCI-001095
Version: WN12-SO-000007
Vuln IDs: V-225452
Rule IDs: SV-225452r569185_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 prevents the system from setting up a default system access control list for certain system objects, which could create a very large number of security events, filling the security log in Windows and making it difficult to identify actual issues.

Fix: F-27139r471699_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Audit: Audit the access of global system objects" to "Disabled".

b

Auditing of Backup and Restore Privileges must be turned off.

RMF Control: SC-5
Severity: M
CCI: CCI-001095
Version: WN12-SO-000008
Vuln IDs: V-225453
Rule IDs: SV-225453r569185_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 prevents the system from generating audit events for every file backed up or restored, which could fill the security log in Windows, making it difficult to identify actual issues.

Fix: F-27140r471702_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Audit: Audit the use of Backup and Restore privilege" to "Disabled".

b

Audit policy using subcategories must be enabled.

RMF Control: AU-12
Severity: M
CCI: CCI-000169
Version: WN12-SO-000009
Vuln IDs: V-225454
Rule IDs: SV-225454r569185_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-27141r471705_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

Ejection of removable NTFS media must be restricted to Administrators.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN12-SO-000011
Vuln IDs: V-225455
Rule IDs: SV-225455r569185_rule

Removable hard drives, if they are not properly configured, can be formatted and ejected by users who are not members of the Administrators Group. Formatting and ejecting removable NTFS media must only be done by administrators.

Fix: F-27142r471708_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Devices: Allowed to format and eject removable media" to "Administrators".

b

Outgoing secure channel traffic must be encrypted or signed.

RMF Control: SC-8
Severity: M
CCI: CCI-002418
Version: WN12-SO-000012
Vuln IDs: V-225456
Rule IDs: SV-225456r852245_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-27143r471711_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: WN12-SO-000013
Vuln IDs: V-225457
Rule IDs: SV-225457r852246_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-27144r471714_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: WN12-SO-000014
Vuln IDs: V-225458
Rule IDs: SV-225458r852247_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-27145r471717_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: WN12-SO-000015
Vuln IDs: V-225459
Rule IDs: SV-225459r569185_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-27146r471720_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 set to requirements.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN12-SO-000016
Vuln IDs: V-225460
Rule IDs: SV-225460r569185_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-27147r471723_fix

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: WN12-SO-000017
Vuln IDs: V-225461
Rule IDs: SV-225461r852248_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-27148r471726_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".

a

The system must be configured to prevent the display of the last username on the logon screen.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN12-SO-000018
Vuln IDs: V-225462
Rule IDs: SV-225462r569185_rule

Displaying the username of the last logged on user provides half of the userid/password equation that an unauthorized person would need to gain access. The username of the last user to log on to a system must not be displayed.

Fix: F-27149r471729_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Interactive logon: Do not display last user name" to "Enabled".

b

The Ctrl+Alt+Del security attention sequence for logons must be enabled.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN12-SO-000019
Vuln IDs: V-225463
Rule IDs: SV-225463r569185_rule

Disabling the Ctrl+Alt+Del security attention sequence can compromise system security. Because only Windows responds to the Ctrl+Alt+Del security sequence, a user can be assured that any passwords entered following that sequence are sent only to Windows. If the sequence requirement is eliminated, malicious programs can request and receive a user's Windows password. Disabling this sequence also suppresses a custom logon banner.

Fix: F-27150r471732_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Interactive Logon: Do not require CTRL+ALT+DEL" to "Disabled".

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: WN12-SO-000021
Vuln IDs: V-225464
Rule IDs: SV-225464r569185_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-27151r471735_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: WN12-SO-000024
Vuln IDs: V-225467
Rule IDs: SV-225467r569185_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-27154r471744_fix

If the system is not a member of a domain, this is NA. 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 "4" logons or less.

a

Users must be warned in advance of their passwords expiring.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN12-SO-000025
Vuln IDs: V-225468
Rule IDs: SV-225468r569185_rule

Creating strong passwords that can be remembered by users requires some thought. By giving the user advance warning, the user has time to construct a sufficiently strong password. This setting configures the system to display a warning to users telling them how many days are left before their password expires.

Fix: F-27155r471747_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Interactive Logon: Prompt user to change password before expiration" to "14" days or more.

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: WN12-SO-000027
Vuln IDs: V-225469
Rule IDs: SV-225469r569185_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-27156r471750_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: WN12-SO-000028
Vuln IDs: V-225470
Rule IDs: SV-225470r852249_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-27157r471753_fix

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

b

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

RMF Control: SC-8
Severity: M
CCI: CCI-002418
Version: WN12-SO-000029
Vuln IDs: V-225471
Rule IDs: SV-225471r852250_rule

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

Fix: F-27158r471756_fix

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

b

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

RMF Control: IA-5
Severity: M
CCI: CCI-000197
Version: WN12-SO-000030
Vuln IDs: V-225472
Rule IDs: SV-225472r569185_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-27159r471759_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".

a

The amount of idle time required before suspending a session must be properly set.

RMF Control: SC-10
Severity: L
CCI: CCI-001133
Version: WN12-SO-000031
Vuln IDs: V-225473
Rule IDs: SV-225473r852251_rule

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

Fix: F-27160r471762_fix

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

b

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

RMF Control: SC-8
Severity: M
CCI: CCI-002418
Version: WN12-SO-000032
Vuln IDs: V-225474
Rule IDs: SV-225474r852252_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-27161r471765_fix

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

b

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

RMF Control: SC-8
Severity: M
CCI: CCI-002418
Version: WN12-SO-000033
Vuln IDs: V-225475
Rule IDs: SV-225475r852253_rule

The server message block (SMB) protocol provides the basis for many network operations. Digitally signed SMB packets aid in preventing man-in-the-middle attacks. If this policy is enabled, the SMB server will negotiate SMB packet signing as requested by the client.

Fix: F-27162r471768_fix

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

a

Users must be forcibly disconnected when their logon hours expire.

RMF Control: SC-10
Severity: L
CCI: CCI-001133
Version: WN12-SO-000034
Vuln IDs: V-225476
Rule IDs: SV-225476r569185_rule

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

Fix: F-27163r471771_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Microsoft network server: Disconnect clients when logon hours expire" to "Enabled".

b

The service principal name (SPN) target name validation level must be turned off.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN12-SO-000035
Vuln IDs: V-225477
Rule IDs: SV-225477r569185_rule

If a service principle name (SPN) is provided by the client, it is validated against the server's list of SPNs. Implementation may disrupt file and print sharing capabilities.

Fix: F-27164r471774_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Microsoft network server: Server SPN target name validation level" to "Off".

b

Automatic logons must be disabled.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN12-SO-000036
Vuln IDs: V-225478
Rule IDs: SV-225478r569185_rule

Allowing a system to automatically log on when the machine is booted could give access to any unauthorized individual who restarts the computer. Automatic logon with administrator privileges would give full access to an unauthorized individual.

Fix: F-27165r641828_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "MSS: (AutoAdminLogon) Enable Automatic Logon (not recommended)" to "Disabled". Ensure no passwords are stored in the "DefaultPassword" registry value noted below: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Microsoft\Windows NT\CurrentVersion\Winlogon\ Value Name: DefaultPassword (See "Updating the Windows Security Options File" in the STIG Overview document if MSS settings are not visible in the system's policy tools.) Severity Override Guidance: If the DefaultName or DefaultDomainName in the same registry path contain an administrator account name and the DefaultPassword contains a value, this is a CAT I finding.

a

IPv6 source routing must be configured to the highest protection level.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN12-SO-000037
Vuln IDs: V-225479
Rule IDs: SV-225479r569185_rule

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

Fix: F-27166r471780_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "MSS: (DisableIPSourceRouting IPv6) IP source routing protection level (protects against packet spoofing)" to "Highest protection, source routing is completely disabled". (See "Updating the Windows Security Options File" in the STIG Overview document if MSS settings are not visible in the system's policy tools.)

a

The system must be configured to prevent IP source routing.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN12-SO-000038
Vuln IDs: V-225480
Rule IDs: SV-225480r569185_rule

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

Fix: F-27167r471783_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "MSS: (DisableIPSourceRouting) IP source routing protection level (protects against packet spoofing)" to "Highest protection, source routing is completely disabled". (See "Updating the Windows Security Options File" in the STIG Overview document if MSS settings are not visible in the system's policy tools.)

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: WN12-SO-000039
Vuln IDs: V-225481
Rule IDs: SV-225481r569185_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-27168r471786_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "MSS: (EnableICMPRedirect) Allow ICMP redirects to override OSPF generated routes" to "Disabled". (See "Updating the Windows Security Options File" in the STIG Overview document if MSS settings are not visible in the system's policy tools.)

a

The system must be configured to limit how often keep-alive packets are sent.

RMF Control: SC-5
Severity: L
CCI: CCI-002385
Version: WN12-SO-000041
Vuln IDs: V-225482
Rule IDs: SV-225482r852254_rule

This setting controls how often TCP sends a keep-alive packet in attempting to verify that an idle connection is still intact. A higher value could allow an attacker to cause a denial of service with numerous connections.

Fix: F-27169r471789_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "MSS: (KeepAliveTime) How often keep-alive packets are sent in milliseconds" to "300000 or 5 minutes (recommended)" or less. (See "Updating the Windows Security Options File" in the STIG Overview document if MSS settings are not visible in the system's policy tools.)

a

IPSec Exemptions must be limited.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN12-SO-000042
Vuln IDs: V-225483
Rule IDs: SV-225483r569185_rule

IPSec exemption filters allow specific traffic that may be needed by the system for such things as Kerberos authentication. This setting configures Windows for specific IPSec exemptions.

Fix: F-27170r471792_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "MSS: (NoDefaultExempt) Configure IPSec exemptions for various types of network traffic" to "Only ISAKMP is exempt (recommended for Windows Server 2003)". (See "Updating the Windows Security Options File" in the STIG Overview document if MSS settings are not visible in the system's policy tools.)

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: WN12-SO-000043
Vuln IDs: V-225484
Rule IDs: SV-225484r852255_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-27171r471795_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "MSS: (NoNameReleaseOnDemand) Allow the computer to ignore NetBIOS name release requests except from WINS servers" to "Enabled". (See "Updating the Windows Security Options File" in the STIG Overview document if MSS settings are not visible in the system's policy tools.)

a

The system must be configured to disable the Internet Router Discovery Protocol (IRDP).

RMF Control: SC-5
Severity: L
CCI: CCI-002385
Version: WN12-SO-000044
Vuln IDs: V-225485
Rule IDs: SV-225485r852256_rule

The Internet Router Discovery Protocol (IRDP) is used to detect and configure default gateway addresses on the computer. If a router is impersonated on a network, traffic could be routed through the compromised system.

Fix: F-27172r471798_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "MSS: (PerformRouterDiscovery) Allow IRDP to detect and configure Default Gateway addresses (could lead to DoS)" to "Disabled". (See "Updating the Windows Security Options File" in the STIG Overview document if MSS settings are not visible in the system's policy tools.)

b

The system must be configured to use Safe DLL Search Mode.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN12-SO-000045
Vuln IDs: V-225486
Rule IDs: SV-225486r569185_rule

The default search behavior, when an application calls a function in a Dynamic Link Library (DLL), is to search the current directory, followed by the directories contained in the system's path environment variable. An unauthorized DLL, inserted into an application's working directory, could allow malicious code to be run on the system. Setting this policy value forces the system to search the %Systemroot% for the DLL before searching the current directory or the rest of the path.

Fix: F-27173r471801_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "MSS: (SafeDllSearchMode) Enable Safe DLL search mode (recommended)" to "Enabled". (See "Updating the Windows Security Options File" in the STIG Overview document if MSS settings are not visible in the system's policy tools.)

a

The system must be configured to have password protection take effect within a limited time frame when the screen saver becomes active.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN12-SO-000046
Vuln IDs: V-225487
Rule IDs: SV-225487r569185_rule

Allowing more than several seconds makes the computer vulnerable to a potential attack from someone walking up to the console to attempt to log on to the system before the lock takes effect.

Fix: F-27174r471804_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "MSS: (ScreenSaverGracePeriod) The time in seconds before the screen saver grace period expires (0 recommended)" to "5" or less. (See "Updating the Windows Security Options File" in the STIG Overview document if MSS settings are not visible in the system's policy tools.)

a

IPv6 TCP data retransmissions must be configured to prevent resources from becoming exhausted.

RMF Control: SC-5
Severity: L
CCI: CCI-002385
Version: WN12-SO-000047
Vuln IDs: V-225488
Rule IDs: SV-225488r852257_rule

Configuring Windows to limit the number of times that IPv6 TCP retransmits unacknowledged data segments before aborting the attempt helps prevent resources from becoming exhausted.

Fix: F-27175r471807_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "MSS: (TcpMaxDataRetransmissions IPv6) How many times unacknowledged data is retransmitted (3 recommended, 5 is default)" to "3" or less. (See "Updating the Windows Security Options File" in the STIG Overview document if MSS settings are not visible in the system's policy tools.)

a

The system must limit how many times unacknowledged TCP data is retransmitted.

RMF Control: SC-5
Severity: L
CCI: CCI-002385
Version: WN12-SO-000048
Vuln IDs: V-225489
Rule IDs: SV-225489r852258_rule

In a SYN flood attack, the attacker sends a continuous stream of SYN packets to a server, and the server leaves the half-open connections open until it is overwhelmed and is no longer able to respond to legitimate requests.

Fix: F-27176r471810_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "MSS: (TcpMaxDataRetransmissions) How many times unacknowledged data is retransmitted (3 recommended, 5 is default)" to "3" or less. (See "Updating the Windows Security Options File" in the STIG Overview document if MSS settings are not visible in the system's policy tools.)

a

The system must generate an audit event when the audit log reaches a percentage of full threshold.

RMF Control: AU-5
Severity: L
CCI: CCI-000139
Version: WN12-SO-000049
Vuln IDs: V-225490
Rule IDs: SV-225490r852259_rule

When the audit log reaches a given percent full, an audit event is written to the security log. It is recorded as a successful audit event under the category of System. This option may be especially useful if the audit logs are set to be cleared manually.

Fix: F-27177r471813_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "MSS: (WarningLevel) Percentage threshold for the security event log at which the system will generate a warning" to "90" or less. (See "Updating the Windows Security Options File" in the STIG Overview document if MSS settings are not visible in the system's policy tools.)

c

Anonymous enumeration of SAM accounts must not be allowed.

RMF Control: CM-6
Severity: H
CCI: CCI-000366
Version: WN12-SO-000051
Vuln IDs: V-225492
Rule IDs: SV-225492r569185_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-27179r471819_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: WN12-SO-000052
Vuln IDs: V-225493
Rule IDs: SV-225493r569185_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-27180r471822_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: WN12-SO-000054
Vuln IDs: V-225494
Rule IDs: SV-225494r569185_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-27181r471825_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

Named pipes that can be accessed anonymously must be configured to contain no values on member servers.

RMF Control: SC-4
Severity: H
CCI: CCI-001090
Version: WN12-SO-000055-MS
Vuln IDs: V-225495
Rule IDs: SV-225495r569185_rule

Named pipes that can be accessed anonymously provide the potential for gaining unauthorized system access. Pipes are internal system communications processes. They are identified internally by ID numbers that vary between systems. To make access to these processes easier, these pipes are given names that do not vary between systems. This setting controls which of these pipes anonymous users may access.

Fix: F-27182r471828_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Network access: Named pipes that can be accessed anonymously" to be defined but containing no entries (blank).

c

Unauthorized remotely accessible registry paths must not be configured.

RMF Control: SC-4
Severity: H
CCI: CCI-001090
Version: WN12-SO-000056
Vuln IDs: V-225496
Rule IDs: SV-225496r569185_rule

The registry is integral to the function, security, and stability of the Windows system. Some processes may require remote access to the registry. This setting controls which registry paths are accessible from a remote computer. These registry paths must be limited, as they could give unauthorized individuals access to the registry.

Fix: F-27183r471831_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Network access: Remotely accessible registry paths" with the following entries: System\CurrentControlSet\Control\ProductOptions System\CurrentControlSet\Control\Server Applications Software\Microsoft\Windows NT\CurrentVersion

c

Unauthorized remotely accessible registry paths and sub-paths must not be configured.

RMF Control: SC-4
Severity: H
CCI: CCI-001090
Version: WN12-SO-000057
Vuln IDs: V-225497
Rule IDs: SV-225497r569185_rule

The registry is integral to the function, security, and stability of the Windows system. Some processes may require remote access to the registry. This setting controls which registry paths and sub-paths are accessible from a remote computer. These registry paths must be limited, as they could give unauthorized individuals access to the registry.

Fix: F-27184r471834_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Network access: Remotely accessible registry paths and sub-paths" with the following entries: Software\Microsoft\OLAP Server Software\Microsoft\Windows NT\CurrentVersion\Perflib Software\Microsoft\Windows NT\CurrentVersion\Print Software\Microsoft\Windows NT\CurrentVersion\Windows System\CurrentControlSet\Control\ContentIndex System\CurrentControlSet\Control\Print\Printers System\CurrentControlSet\Control\Terminal Server System\CurrentControlSet\Control\Terminal Server\UserConfig System\CurrentControlSet\Control\Terminal Server\DefaultUserConfiguration System\CurrentControlSet\Services\Eventlog System\CurrentControlSet\Services\Sysmonlog

c

Anonymous access to Named Pipes and Shares must be restricted.

RMF Control: SC-4
Severity: H
CCI: CCI-001090
Version: WN12-SO-000058
Vuln IDs: V-225498
Rule IDs: SV-225498r569185_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-27185r471837_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".

c

Network shares that can be accessed anonymously must not be allowed.

RMF Control: SC-4
Severity: H
CCI: CCI-001090
Version: WN12-SO-000059
Vuln IDs: V-225499
Rule IDs: SV-225499r569185_rule

Anonymous access to network shares provides the potential for gaining unauthorized system access by network users. This could lead to the exposure or corruption of sensitive data.

Fix: F-27186r471840_fix

Ensure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Network access: Shares that can be accessed anonymously" contains no entries (blank).

b

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

RMF Control: SC-4
Severity: M
CCI: CCI-001090
Version: WN12-SO-000060
Vuln IDs: V-225500
Rule IDs: SV-225500r569185_rule

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

Fix: F-27187r471843_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Network access: Sharing and security model for local accounts" to "Classic - local users authenticate as themselves".

b

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

RMF Control: IA-3
Severity: M
CCI: CCI-000778
Version: WN12-SO-000061
Vuln IDs: V-225501
Rule IDs: SV-225501r569185_rule

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

Fix: F-27188r471846_fix

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

b

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

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN12-SO-000062
Vuln IDs: V-225502
Rule IDs: SV-225502r569185_rule

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

Fix: F-27189r471849_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: WN12-SO-000063
Vuln IDs: V-225503
Rule IDs: SV-225503r569185_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-27190r471852_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: WN12-SO-000064
Vuln IDs: V-225504
Rule IDs: SV-225504r569185_rule

Certain encryption types are no longer considered secure. The DES and RC4 encryption suites must not be used for Kerberos encryption. Note: Removing the previously allowed RC4_HMAC_MD5 encryption suite may have operational impacts and must be thoroughly tested for the environment before changing. This includes but is not limited to parent\child trusts where RC4 is still enabled; selecting "The other domain supports Kerberos AES Encryption" may be required on the domain trusts to allow client communication across the trust relationship.

Fix: F-27191r471855_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 Note: Removing the previously allowed RC4_HMAC_MD5 encryption suite may have operational impacts and must be thoroughly tested for the environment before changing. This includes but is not limited to parent\child trusts where RC4 is still enabled; selecting "The other domain supports Kerberos AES Encryption" may be required on the domain trusts to allow client communication across the trust relationship.

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: WN12-SO-000065
Vuln IDs: V-225505
Rule IDs: SV-225505r569185_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-27192r471858_fix

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

b

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

RMF Control: SC-10
Severity: M
CCI: CCI-001133
Version: WN12-SO-000066
Vuln IDs: V-225506
Rule IDs: SV-225506r569185_rule

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

Fix: F-27193r471861_fix

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

c

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

RMF Control: CM-6
Severity: H
CCI: CCI-000366
Version: WN12-SO-000067
Vuln IDs: V-225507
Rule IDs: SV-225507r569185_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-27194r471864_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: WN12-SO-000068
Vuln IDs: V-225508
Rule IDs: SV-225508r569185_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-27195r471867_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: WN12-SO-000069
Vuln IDs: V-225509
Rule IDs: SV-225509r569185_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-27196r471870_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: WN12-SO-000070
Vuln IDs: V-225510
Rule IDs: SV-225510r569185_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-27197r471873_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).

a

The shutdown option must not be available from the logon dialog box.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN12-SO-000073
Vuln IDs: V-225511
Rule IDs: SV-225511r569185_rule

Displaying the shutdown button may allow individuals to shut down a system anonymously. Only authenticated users should be allowed to shut down the system. Preventing display of this button in the logon dialog box ensures that individuals who shut down the system are authorized and tracked in the system's Security event log.

Fix: F-27198r471876_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Shutdown: Allow system to be shutdown without having to log on" to "Disabled".

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: WN12-SO-000074
Vuln IDs: V-225512
Rule IDs: SV-225512r852260_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-27199r471879_fix

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

b

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

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN12-SO-000075
Vuln IDs: V-225513
Rule IDs: SV-225513r569185_rule

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

Fix: F-27200r471882_fix

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

a

The default permissions of global system objects must be increased.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN12-SO-000076
Vuln IDs: V-225514
Rule IDs: SV-225514r569185_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 nonadministrative users to read shared objects, but not modify shared objects that they did not create.

Fix: F-27201r471885_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: WN12-SO-000077
Vuln IDs: V-225515
Rule IDs: SV-225515r852261_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. Satisfies: SRG-OS-000373-GPOS-00158

Fix: F-27202r471888_fix

UAC requirements are NA on Server Core installations. 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.

RMF Control: SC-3
Severity: M
CCI: CCI-001084
Version: WN12-SO-000078
Vuln IDs: V-225516
Rule IDs: SV-225516r569185_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-27203r471891_fix

UAC requirements are NA on Server Core installations. 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". More secure options for this setting would also be acceptable (e.g., Prompt for credentials, Prompt for consent (or credentials) on the secure desktop).

b

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

RMF Control: IA-11
Severity: M
CCI: CCI-002038
Version: WN12-SO-000079
Vuln IDs: V-225517
Rule IDs: SV-225517r852262_rule

User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting controls the behavior of elevation when requested by a standard user account. Satisfies: SRG-OS-000373-GPOS-00158

Fix: F-27204r471894_fix

UAC requirements are NA on Server Core installations. 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: WN12-SO-000080
Vuln IDs: V-225518
Rule IDs: SV-225518r569185_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-27205r471897_fix

UAC requirements are NA on Server Core installations. 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

Windows must elevate all applications in User Account Control, not just signed ones.

RMF Control: SC-3
Severity: M
CCI: CCI-001084
Version: WN12-SO-000081
Vuln IDs: V-225519
Rule IDs: SV-225519r569185_rule

User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting configures whether Windows elevates all applications, or only signed ones.

Fix: F-27206r471900_fix

UAC requirements are NA on Server Core installations. Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "User Account Control: Only elevate executables that are signed and validated" to "Disabled".

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: WN12-SO-000082
Vuln IDs: V-225520
Rule IDs: SV-225520r569185_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-27207r471903_fix

UAC requirements are NA on Server Core installations. 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: WN12-SO-000083
Vuln IDs: V-225521
Rule IDs: SV-225521r852263_rule

User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting enables UAC. Satisfies: SRG-OS-000373-GPOS-00158

Fix: F-27208r471906_fix

UAC requirements are NA on Server Core installations. 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 switch to the secure desktop when prompting for elevation.

RMF Control: SC-3
Severity: M
CCI: CCI-001084
Version: WN12-SO-000084
Vuln IDs: V-225522
Rule IDs: SV-225522r569185_rule

User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting ensures that the elevation prompt is only used in secure desktop mode.

Fix: F-27209r471909_fix

UAC requirements are NA on Server Core installations. Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "User Account Control: Switch to the secure desktop when prompting for elevation" 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: WN12-SO-000085
Vuln IDs: V-225523
Rule IDs: SV-225523r569185_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-27210r471912_fix

UAC requirements are NA on Server Core installations. 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

UIAccess applications must not be allowed to prompt for elevation without using the secure desktop.

RMF Control: SC-3
Severity: M
CCI: CCI-001084
Version: WN12-SO-000086
Vuln IDs: V-225524
Rule IDs: SV-225524r569185_rule

User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting prevents User Interface Accessibility programs from disabling the secure desktop for elevation prompts.

Fix: F-27211r471915_fix

UAC requirements are NA on Server Core installations. Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "User Account Control: Allow UIAccess applications to prompt for elevation without using the secure desktop" to "Disabled".

a

Optional Subsystems must not be permitted to operate on the system.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: WN12-SO-000088
Vuln IDs: V-225525
Rule IDs: SV-225525r569185_rule

The POSIX subsystem is an Institute of Electrical and Electronic Engineers (IEEE) standard that defines a set of operating system services. The POSIX Subsystem is required if the server supports applications that use that subsystem. The subsystem introduces a security risk relating to processes that can potentially persist across logins. That is, if a user starts a process and then logs out, there is a potential that the next user who logs in to the system could access the previous users process. This is dangerous because the process started by the first user may retain that users system privileges, and anything the second user does with that process will be performed with the privileges of the first user.

Fix: F-27212r471918_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "System settings: Optional subsystems" to "Blank" (Configured with no entries).

a

The print driver installation privilege must be restricted to administrators.

RMF Control: CM-11
Severity: L
CCI: CCI-001812
Version: WN12-SO-000089
Vuln IDs: V-225526
Rule IDs: SV-225526r852264_rule

Allowing users to install drivers can introduce malware or cause the instability of a system. Print driver installation should be restricted to administrators.

Fix: F-27213r471921_fix

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Devices: Prevent users from installing printer drivers" to "Enabled".

b

Users must be required to enter a password to access private keys stored on the computer.

RMF Control: IA-5
Severity: M
CCI: CCI-000186
Version: WN12-SO-000092
Vuln IDs: V-225527
Rule IDs: SV-225527r569185_rule

If the private key is discovered, an attacker can use the key to authenticate as an authorized user and gain access to the network infrastructure. The cornerstone of the PKI is the private key used to encrypt or digitally sign information. If the private key is stolen, this will lead to the compromise of the authentication and non-repudiation gained through PKI because the attacker can use the private key to digitally sign documents and pretend to be the authorized user. Both the holders of a digital certificate and the issuing authority must protect the computers, storage devices, or whatever they use to keep the private keys.

Fix: F-27214r471924_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "System cryptography: Force strong key protection for user keys stored on the computer" to "User must enter a password each time they use a key".

b

The Fax service must be disabled if installed.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN12-SV-000100
Vuln IDs: V-225528
Rule IDs: SV-225528r569185_rule