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Windows Server 2016 Security Technical Implementation Guide

V001R012 · · · Published 12 Dec 2019 · 205 rules
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This Security Technical Implementation Guide is published as a tool to improve the security of Department of Defense (DoD) information systems. The requirements are derived from the National Institute of Standards and Technology (NIST) 800-53 and related documents. Comments or proposed revisions to this document should be sent via email to the following address: disa.stig_spt@mail.mil.
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c
Systems must be maintained at a supported servicing level.
RMF Control
CM-6
Severity
H
CCI
CCI-000366
Version
WN16-00-000110
Vuln IDs
V-73239
Rule IDs
SV-87891r1_rule
Systems at unsupported servicing levels will not receive security updates for new vulnerabilities, which leave them subject to exploitation. Systems must be maintained at a servicing level supported by the vendor with new security updates.
Fix: F-79683r1_fix

Update the system to a Version 1607 (Build 14393.xxx) or greater.

c
Local volumes must use a format that supports NTFS attributes.
RMF Control
AC-3
Severity
H
CCI
CCI-000213
Version
WN16-00-000150
Vuln IDs
V-73247
Rule IDs
SV-87899r1_rule
The ability to set access permissions and auditing is critical to maintaining the security and proper access controls of a system. To support this, volumes must be formatted using a file system that supports NTFS attributes.
Fix: F-79691r1_fix

Format volumes to use NTFS or ReFS.

b
Software certificate installation files must be removed from Windows Server 2016.
RMF Control
CM-6
Severity
M
CCI
CCI-000366
Version
WN16-00-000270
Vuln IDs
V-73271
Rule IDs
SV-87923r2_rule
Use of software certificates and their accompanying installation files for end users to access resources is less secure than the use of hardware-based certificates.
Fix: F-101003r1_fix

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

b
The Fax Server role must not be installed.
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
WN16-00-000350
Vuln IDs
V-73287
Rule IDs
SV-87939r1_rule
Unnecessary services increase the attack surface of a system. Some of these services may not support required levels of authentication or encryption or may provide unauthorized access to the system.
Fix: F-79731r1_fix

Uninstall the "Fax Server" role. Start "Server Manager". Select the server with the role. Scroll down to "ROLES AND FEATURES" in the right pane. Select "Remove Roles and Features" from the drop-down "TASKS" list. Select the appropriate server on the "Server Selection" page and click "Next". Deselect "Fax Server" on the "Roles" page. Click "Next" and "Remove" as prompted.

b
The Microsoft FTP service must not be installed unless required.
RMF Control
CM-7
Severity
M
CCI
CCI-000382
Version
WN16-00-000360
Vuln IDs
V-73289
Rule IDs
SV-87941r1_rule
Unnecessary services increase the attack surface of a system. Some of these services may not support required levels of authentication or encryption.
Fix: F-79733r1_fix

Uninstall the "FTP Server" role. Start "Server Manager". Select the server with the role. Scroll down to "ROLES AND FEATURES" in the right pane. Select "Remove Roles and Features" from the drop-down "TASKS" list. Select the appropriate server on the "Server Selection" page and click "Next". Deselect "FTP Server" under "Web Server (IIS)" on the "Roles" page. Click "Next" and "Remove" as prompted.

b
The Peer Name Resolution Protocol must not be installed.
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
WN16-00-000370
Vuln IDs
V-73291
Rule IDs
SV-87943r1_rule
Unnecessary services increase the attack surface of a system. Some of these services may not support required levels of authentication or encryption or may provide unauthorized access to the system.
Fix: F-80269r1_fix

Uninstall the "Peer Name Resolution Protocol" feature. Start "Server Manager". Select the server with the feature. Scroll down to "ROLES AND FEATURES" in the right pane. Select "Remove Roles and Features" from the drop-down "TASKS" list. Select the appropriate server on the "Server Selection" page and click "Next". Deselect "Peer Name Resolution Protocol" on the "Features" page. Click "Next" and "Remove" as prompted.

b
Simple TCP/IP Services must not be installed.
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
WN16-00-000380
Vuln IDs
V-73293
Rule IDs
SV-87945r1_rule
Unnecessary services increase the attack surface of a system. Some of these services may not support required levels of authentication or encryption or may provide unauthorized access to the system.
Fix: F-79735r1_fix

Uninstall the "Simple TCP/IP Services" feature. Start "Server Manager". Select the server with the feature. Scroll down to "ROLES AND FEATURES" in the right pane. Select "Remove Roles and Features" from the drop-down "TASKS" list. Select the appropriate server on the "Server Selection" page and click "Next". Deselect "Simple TCP/IP Services" on the "Features" page. Click "Next" and "Remove" as prompted.

b
The Telnet Client must not be installed.
RMF Control
CM-7
Severity
M
CCI
CCI-000382
Version
WN16-00-000390
Vuln IDs
V-73295
Rule IDs
SV-87947r1_rule
Unnecessary services increase the attack surface of a system. Some of these services may not support required levels of authentication or encryption or may provide unauthorized access to the system.
Fix: F-79737r1_fix

Uninstall the "Telnet Client" feature. Start "Server Manager". Select the server with the feature. Scroll down to "ROLES AND FEATURES" in the right pane. Select "Remove Roles and Features" from the drop-down "TASKS" list. Select the appropriate server on the "Server Selection" page and click "Next". Deselect "Telnet Client" on the "Features" page. Click "Next" and "Remove" as prompted.

b
The TFTP Client must not be installed.
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
WN16-00-000400
Vuln IDs
V-73297
Rule IDs
SV-87949r1_rule
Unnecessary services increase the attack surface of a system. Some of these services may not support required levels of authentication or encryption or may provide unauthorized access to the system.
Fix: F-79739r1_fix

Uninstall the "TFTP Client" feature. Start "Server Manager". Select the server with the feature. Scroll down to "ROLES AND FEATURES" in the right pane. Select "Remove Roles and Features" from the drop-down "TASKS" list. Select the appropriate server on the "Server Selection" page and click "Next". Deselect "TFTP Client" on the "Features" page. Click "Next" and "Remove" as prompted.

b
The Server Message Block (SMB) v1 protocol must be uninstalled.
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
WN16-00-000410
Vuln IDs
V-73299
Rule IDs
SV-87951r2_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 and is not FIPS compliant.
Fix: F-84915r1_fix

Uninstall the SMBv1 protocol. Open "Windows PowerShell" with elevated privileges (run as administrator). Enter "Uninstall-WindowsFeature -Name FS-SMB1 -Restart". (Omit the Restart parameter if an immediate restart of the system cannot be done.) Alternately: Start "Server Manager". Select the server with the feature. Scroll down to "ROLES AND FEATURES" in the right pane. Select "Remove Roles and Features" from the drop-down "TASKS" list. Select the appropriate server on the "Server Selection" page and click "Next". Deselect "SMB 1.0/CIFS File Sharing Support" on the "Features" page. Click "Next" and "Remove" as prompted.

b
Windows PowerShell 2.0 must not be installed.
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
WN16-00-000420
Vuln IDs
V-73301
Rule IDs
SV-87953r1_rule
Windows PowerShell 5.0 added advanced logging features that can provide additional detail when malware has been run on a system. Disabling the Windows PowerShell 2.0 mitigates against a downgrade attack that evades the Windows PowerShell 5.0 script block logging feature.
Fix: F-79743r1_fix

Uninstall the "Windows PowerShell 2.0 Engine". Start "Server Manager". Select the server with the feature. Scroll down to "ROLES AND FEATURES" in the right pane. Select "Remove Roles and Features" from the drop-down "TASKS" list. Select the appropriate server on the "Server Selection" page and click "Next". Deselect "Windows PowerShell 2.0 Engine" under "Windows PowerShell" on the "Features" page. Click "Next" and "Remove" as prompted.

b
Windows 2016 account lockout duration must be configured to 15 minutes or greater.
RMF Control
AC-7
Severity
M
CCI
CCI-002238
Version
WN16-AC-000010
Vuln IDs
V-73309
Rule IDs
SV-87961r3_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-80983r1_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
Windows Server 2016 must have the number of allowed bad logon attempts configured to three or less.
RMF Control
AC-7
Severity
M
CCI
CCI-000044
Version
WN16-AC-000020
Vuln IDs
V-73311
Rule IDs
SV-87963r2_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 normal user logon.
Fix: F-79753r1_fix

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

b
Windows Server 2016 must have the period of time before the bad logon counter is reset configured to 15 minutes or greater.
RMF Control
AC-7
Severity
M
CCI
CCI-000044
Version
WN16-AC-000030
Vuln IDs
V-73313
Rule IDs
SV-87965r2_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. Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128
Fix: F-79755r1_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
Windows Server 2016 password history must be configured to 24 passwords remembered.
RMF Control
IA-5
Severity
M
CCI
CCI-000200
Version
WN16-AC-000040
Vuln IDs
V-73315
Rule IDs
SV-87967r2_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-79757r1_fix

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

b
Windows Server 2016 maximum password age must be configured to 60 days or less.
RMF Control
IA-5
Severity
M
CCI
CCI-000199
Version
WN16-AC-000050
Vuln IDs
V-73317
Rule IDs
SV-87969r2_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-79759r1_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
Windows Server 2016 minimum password age must be configured to at least one day.
RMF Control
IA-5
Severity
M
CCI
CCI-000198
Version
WN16-AC-000060
Vuln IDs
V-73319
Rule IDs
SV-87971r2_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-79761r1_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
Windows Server 2016 minimum password length must be configured to 14 characters.
RMF Control
IA-5
Severity
M
CCI
CCI-000205
Version
WN16-AC-000070
Vuln IDs
V-73321
Rule IDs
SV-87973r2_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-79763r1_fix

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

b
Windows Server 2016 must have the built-in Windows password complexity policy enabled.
RMF Control
IA-5
Severity
M
CCI
CCI-000192
Version
WN16-AC-000080
Vuln IDs
V-73323
Rule IDs
SV-87975r2_rule
The use of complex passwords increases their strength against attack. The built-in Windows password complexity policy requires passwords to contain at least three of the four types of characters (numbers, upper- and lower-case letters, and special characters) and prevents the inclusion of user names or parts of user names. Satisfies: SRG-OS-000069-GPOS-00037, SRG-OS-000070-GPOS-00038, SRG-OS-000071-GPOS-00039, SRG-OS-000266-GPOS-00101
Fix: F-79765r1_fix

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

c
Windows Server 2016 reversible password encryption must be disabled.
RMF Control
IA-5
Severity
H
CCI
CCI-000196
Version
WN16-AC-000090
Vuln IDs
V-73325
Rule IDs
SV-87977r2_rule
Storing passwords using reversible encryption is essentially the same as storing clear-text versions of the passwords, which are easily compromised. For this reason, this policy must never be enabled.
Fix: F-79767r1_fix

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

b
Kerberos user logon restrictions must be enforced.
RMF Control
IA-2
Severity
M
CCI
CCI-001941
Version
WN16-DC-000020
Vuln IDs
V-73359
Rule IDs
SV-88011r1_rule
This policy setting determines whether the Kerberos Key Distribution Center (KDC) validates every request for a session ticket against the user rights policy of the target computer. The policy is enabled by default, which is the most secure setting for validating that access to target resources is not circumvented. Satisfies: SRG-OS-000112-GPOS-00057, SRG-OS-000113-GPOS-00058
Fix: F-79801r1_fix

Configure the policy value in the Default Domain Policy for Computer Configuration >> Policies >> Windows Settings >> Security Settings >> Account Policies >> Kerberos Policy >> "Enforce user logon restrictions" to "Enabled".

b
The Kerberos service ticket maximum lifetime must be limited to 600 minutes or less.
RMF Control
IA-2
Severity
M
CCI
CCI-001941
Version
WN16-DC-000030
Vuln IDs
V-73361
Rule IDs
SV-88013r1_rule
This setting determines the maximum amount of time (in minutes) that a granted session ticket can be used to access a particular service. Session tickets are used only to authenticate new connections with servers. Ongoing operations are not interrupted if the session ticket used to authenticate the connection expires during the connection. Satisfies: SRG-OS-000112-GPOS-00057, SRG-OS-000113-GPOS-00058
Fix: F-79803r1_fix

Configure the policy value in the Default Domain Policy for Computer Configuration >> Policies >> Windows Settings >> Security Settings >> Account Policies >> Kerberos Policy >> "Maximum lifetime for service ticket" to a maximum of "600" minutes, but not "0", which equates to "Ticket doesn't expire".

b
The Kerberos user ticket lifetime must be limited to 10 hours or less.
RMF Control
IA-2
Severity
M
CCI
CCI-001941
Version
WN16-DC-000040
Vuln IDs
V-73363
Rule IDs
SV-88015r1_rule
In Kerberos, there are two types of tickets: Ticket Granting Tickets (TGTs) and Service Tickets. Kerberos tickets have a limited lifetime so the time an attacker has to implement an attack is limited. This policy controls how long TGTs can be renewed. With Kerberos, the user's initial authentication to the domain controller results in a TGT, which is then used to request Service Tickets to resources. Upon startup, each computer gets a TGT before requesting a service ticket to the domain controller and any other computers it needs to access. For services that start up under a specified user account, users must always get a TGT first and then get Service Tickets to all computers and services accessed. Satisfies: SRG-OS-000112-GPOS-00057, SRG-OS-000113-GPOS-00058
Fix: F-79805r1_fix

Configure the policy value in the Default Domain Policy for Computer Configuration >> Policies >> Windows Settings >> Security Settings >> Account Policies >> Kerberos Policy >> "Maximum lifetime for user ticket" to a maximum of "10" hours but not "0", which equates to "Ticket doesn't expire".

b
The Kerberos policy user ticket renewal maximum lifetime must be limited to seven days or less.
RMF Control
IA-2
Severity
M
CCI
CCI-001941
Version
WN16-DC-000050
Vuln IDs
V-73365
Rule IDs
SV-88017r1_rule
This setting determines the period of time (in days) during which a user's Ticket Granting Ticket (TGT) may be renewed. This security configuration limits the amount of time an attacker has to crack the TGT and gain access. Satisfies: SRG-OS-000112-GPOS-00057, SRG-OS-000113-GPOS-00058
Fix: F-79807r1_fix

Configure the policy value in the Default Domain Policy for Computer Configuration >> Policies >> Windows Settings >> Security Settings >> Account Policies >> Kerberos Policy >> "Maximum lifetime for user ticket renewal" to a maximum of "7" days or less.

b
The computer clock synchronization tolerance must be limited to 5 minutes or less.
RMF Control
IA-2
Severity
M
CCI
CCI-001941
Version
WN16-DC-000060
Vuln IDs
V-73367
Rule IDs
SV-88019r1_rule
This setting determines the maximum time difference (in minutes) that Kerberos will tolerate between the time on a client's clock and the time on a server's clock while still considering the two clocks synchronous. In order to prevent replay attacks, Kerberos uses timestamps as part of its protocol definition. For timestamps to work properly, the clocks of the client and the server need to be in sync as much as possible. Satisfies: SRG-OS-000112-GPOS-00057, SRG-OS-000113-GPOS-00058
Fix: F-79809r1_fix

Configure the policy value in the Default Domain Policy for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Kerberos Policy >> "Maximum tolerance for computer clock synchronization" to a maximum of "5" minutes or less.

c
Permissions on the Active Directory data files must only allow System and Administrators access.
RMF Control
AC-6
Severity
H
CCI
CCI-002235
Version
WN16-DC-000070
Vuln IDs
V-73369
Rule IDs
SV-88021r1_rule
Improper access permissions for directory data-related files could allow unauthorized users to read, modify, or delete directory data or audit trails.
Fix: F-79811r1_fix

Maintain the permissions on NTDS database and log files as follows: NT AUTHORITY\SYSTEM:(I)(F) BUILTIN\Administrators:(I)(F) (I) - permission inherited from parent container (F) - full access

b
Permissions for the Application event log must prevent access by non-privileged accounts.
RMF Control
AU-9
Severity
M
CCI
CCI-000162
Version
WN16-AU-000030
Vuln IDs
V-73405
Rule IDs
SV-88057r1_rule
Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. The Application event log may be susceptible to tampering if proper permissions are not applied. Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029
Fix: F-79847r1_fix

Configure the permissions on the Application event log file (Application.evtx) to prevent access by non-privileged accounts. The default permissions listed below satisfy this requirement: Eventlog - Full Control SYSTEM - Full Control Administrators - Full Control The default location is the "%SystemRoot%\ System32\winevt\Logs" folder. If the location of the logs has been changed, when adding Eventlog to the permissions, it must be entered as "NT Service\Eventlog".

b
Permissions for the Security event log must prevent access by non-privileged accounts.
RMF Control
AU-9
Severity
M
CCI
CCI-000162
Version
WN16-AU-000040
Vuln IDs
V-73407
Rule IDs
SV-88059r1_rule
Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. The Security event log may disclose sensitive information or be susceptible to tampering if proper permissions are not applied. Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029
Fix: F-79849r1_fix

Configure the permissions on the Security event log file (Security.evtx) to prevent access by non-privileged accounts. The default permissions listed below satisfy this requirement: Eventlog - Full Control SYSTEM - Full Control Administrators - Full Control The default location is the "%SystemRoot%\ System32\winevt\Logs" folder. If the location of the logs has been changed, when adding Eventlog to the permissions, it must be entered as "NT Service\Eventlog".

b
Permissions for the System event log must prevent access by non-privileged accounts.
RMF Control
AU-9
Severity
M
CCI
CCI-000162
Version
WN16-AU-000050
Vuln IDs
V-73409
Rule IDs
SV-88061r1_rule
Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. The System event log may be susceptible to tampering if proper permissions are not applied. Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029
Fix: F-79851r1_fix

Configure the permissions on the System event log file (System.evtx) to prevent access by non-privileged accounts. The default permissions listed below satisfy this requirement: Eventlog - Full Control SYSTEM - Full Control Administrators - Full Control The default location is the "%SystemRoot%\ System32\winevt\Logs" folder. If the location of the logs has been changed, when adding Eventlog to the permissions, it must be entered as "NT Service\Eventlog".

b
Event Viewer must be protected from unauthorized modification and deletion.
RMF Control
AU-9
Severity
M
CCI
CCI-001494
Version
WN16-AU-000060
Vuln IDs
V-73411
Rule IDs
SV-88063r1_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. Satisfies: SRG-OS-000257-GPOS-00098, SRG-OS-000258-GPOS-00099
Fix: F-79853r1_fix

Configure the permissions on the "Eventvwr.exe" file to prevent modification by any groups or accounts other than TrustedInstaller. The default permissions listed below satisfy this requirement: TrustedInstaller - Full Control Administrators, SYSTEM, Users, ALL APPLICATION PACKAGES, ALL RESTRICTED APPLICATION PACKAGES - Read & Execute The default location is the "%SystemRoot%\ System32" folder.

b
Windows Server 2016 must be configured to audit Account Logon - Credential Validation successes.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000070
Vuln IDs
V-73413
Rule IDs
SV-88065r1_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-79855r1_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
Windows Server 2016 must be configured to audit Account Logon - Credential Validation failures.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000080
Vuln IDs
V-73415
Rule IDs
SV-88067r1_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-79857r1_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
Windows Server 2016 must be configured to audit Account Management - Other Account Management Events successes.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000100
Vuln IDs
V-73419
Rule IDs
SV-88071r1_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. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000064-GPOS-00033, SRG-OS-000462-GPOS-00206, SRG-OS-000466-GPOS-00210
Fix: F-79861r1_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
Windows Server 2016 must be configured to audit Account Management - Security Group Management successes.
RMF Control
AC-2
Severity
M
CCI
CCI-000018
Version
WN16-AU-000120
Vuln IDs
V-73423
Rule IDs
SV-88075r1_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. Satisfies: SRG-OS-000004-GPOS-00004, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000476-GPOS-00221
Fix: F-79865r1_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
Windows Server 2016 must be configured to audit Account Management - User Account Management successes.
RMF Control
AC-2
Severity
M
CCI
CCI-000018
Version
WN16-AU-000140
Vuln IDs
V-73427
Rule IDs
SV-88079r1_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. Satisfies: SRG-OS-000004-GPOS-00004, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000476-GPOS-00221
Fix: F-79869r1_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
Windows Server 2016 must be configured to audit Account Management - User Account Management failures.
RMF Control
AC-2
Severity
M
CCI
CCI-000018
Version
WN16-AU-000150
Vuln IDs
V-73429
Rule IDs
SV-88081r1_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. Satisfies: SRG-OS-000004-GPOS-00004, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000476-GPOS-00221
Fix: F-79871r1_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
Windows Server 2016 must be configured to audit Detailed Tracking - Process Creation successes.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000170
Vuln IDs
V-73433
Rule IDs
SV-88085r1_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. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000471-GPOS-00215
Fix: F-79875r1_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 2016 must be configured to audit DS Access - Directory Service Access successes.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-DC-000240
Vuln IDs
V-73435
Rule IDs
SV-88087r1_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 Directory Service Access records events related to users accessing an Active Directory object. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212
Fix: F-79877r1_fix

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

b
Windows Server 2016 must be configured to audit DS Access - Directory Service Access failures.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-DC-000250
Vuln IDs
V-73437
Rule IDs
SV-88089r1_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 Directory Service Access records events related to users accessing an Active Directory object. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212
Fix: F-79879r1_fix

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

b
Windows Server 2016 must be configured to audit DS Access - Directory Service Changes successes.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-DC-000260
Vuln IDs
V-73439
Rule IDs
SV-88091r1_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 Directory Service Changes records events related to changes made to objects in Active Directory Domain Services. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212
Fix: F-79881r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> DS Access >> "Directory Service Changes" with "Success" selected.

b
Windows Server 2016 must be configured to audit DS Access - Directory Service Changes failures.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-DC-000270
Vuln IDs
V-73441
Rule IDs
SV-88093r1_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 Directory Service Changes records events related to changes made to objects in Active Directory Domain Services. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212
Fix: F-79883r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> DS Access >> "Directory Service Changes" with "Failure" selected.

b
Windows Server 2016 must be configured to audit Logon/Logoff - Account Lockout successes.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000220
Vuln IDs
V-73443
Rule IDs
SV-88095r3_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. Satisfies: SRG-OS-000240-GPOS-00090, SRG-OS-000470-GPOS-00214
Fix: F-79885r2_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 2016 must be configured to audit Logon/Logoff - Account Lockout failures.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000230
Vuln IDs
V-73445
Rule IDs
SV-88097r3_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. Satisfies: SRG-OS-000240-GPOS-00090, SRG-OS-000470-GPOS-00214
Fix: F-79887r2_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
Windows Server 2016 must be configured to audit Logon/Logoff - Logoff successes.
RMF Control
AC-17
Severity
M
CCI
CCI-000067
Version
WN16-AU-000250
Vuln IDs
V-73449
Rule IDs
SV-88101r1_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. Satisfies: SRG-OS-000032-GPOS-00013, SRG-OS-000470-GPOS-00214, SRG-OS-000472-GPOS-00217, SRG-OS-000473-GPOS-00218, SRG-OS-000475-GPOS-00220
Fix: F-79891r1_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
Windows Server 2016 must be configured to audit Logon/Logoff - Logon successes.
RMF Control
AC-17
Severity
M
CCI
CCI-000067
Version
WN16-AU-000260
Vuln IDs
V-73451
Rule IDs
SV-88103r1_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. Satisfies: SRG-OS-000032-GPOS-00013, SRG-OS-000470-GPOS-00214, SRG-OS-000472-GPOS-00217, SRG-OS-000473-GPOS-00218, SRG-OS-000475-GPOS-00220
Fix: F-79893r1_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
Windows Server 2016 must be configured to audit Logon/Logoff - Logon failures.
RMF Control
AC-17
Severity
M
CCI
CCI-000067
Version
WN16-AU-000270
Vuln IDs
V-73453
Rule IDs
SV-88105r1_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. Satisfies: SRG-OS-000032-GPOS-00013, SRG-OS-000470-GPOS-00214, SRG-OS-000472-GPOS-00217, SRG-OS-000473-GPOS-00218, SRG-OS-000475-GPOS-00220
Fix: F-79895r1_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
Windows Server 2016 must be configured to audit Logon/Logoff - Special Logon successes.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000280
Vuln IDs
V-73455
Rule IDs
SV-88107r1_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 that have administrative privileges and can be used to elevate processes. Satisfies: SRG-OS-000470-GPOS-00214, SRG-OS-000472-GPOS-00217, SRG-OS-000473-GPOS-00218, SRG-OS-000475-GPOS-00220
Fix: F-79897r1_fix

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

b
Windows Server 2016 must be configured to audit Policy Change - Audit Policy Change successes.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000310
Vuln IDs
V-73461
Rule IDs
SV-88113r1_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. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212
Fix: F-79903r1_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
Windows Server 2016 must be configured to audit Policy Change - Audit Policy Change failures.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000320
Vuln IDs
V-73463
Rule IDs
SV-88115r1_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. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212
Fix: F-79905r1_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
Windows Server 2016 must be configured to audit Policy Change - Authentication Policy Change successes.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000330
Vuln IDs
V-73465
Rule IDs
SV-88117r1_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. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000064-GPOS-00033, SRG-OS-000462-GPOS-00206, SRG-OS-000466-GPOS-00210
Fix: F-79907r1_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
Windows Server 2016 must be configured to audit Policy Change - Authorization Policy Change successes.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000340
Vuln IDs
V-73467
Rule IDs
SV-88119r1_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". Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000064-GPOS-00033, SRG-OS-000462-GPOS-00206, SRG-OS-000466-GPOS-00210
Fix: F-79909r1_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
Windows Server 2016 must be configured to audit Privilege Use - Sensitive Privilege Use successes.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000350
Vuln IDs
V-73469
Rule IDs
SV-88121r1_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". Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000064-GPOS-00033, SRG-OS-000462-GPOS-00206, SRG-OS-000466-GPOS-00210
Fix: F-79911r1_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
Windows Server 2016 must be configured to audit Privilege Use - Sensitive Privilege Use failures.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000360
Vuln IDs
V-73471
Rule IDs
SV-88123r1_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". Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000064-GPOS-00033, SRG-OS-000462-GPOS-00206, SRG-OS-000466-GPOS-00210
Fix: F-79913r1_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
Windows Server 2016 must be configured to audit System - IPsec Driver successes.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000370
Vuln IDs
V-73473
Rule IDs
SV-88125r1_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. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212
Fix: F-79915r1_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
Windows Server 2016 must be configured to audit System - IPsec Driver failures.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000380
Vuln IDs
V-73475
Rule IDs
SV-88127r1_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. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212
Fix: F-79917r1_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 2016 must be configured to audit System - Other System Events successes.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000390
Vuln IDs
V-73477
Rule IDs
SV-88129r3_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-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212
Fix: F-79919r2_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 2016 must be configured to audit System - Other System Events failures.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000400
Vuln IDs
V-73479
Rule IDs
SV-88131r3_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-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212
Fix: F-79921r2_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
Windows Server 2016 must be configured to audit System - Security State Change successes.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000410
Vuln IDs
V-73481
Rule IDs
SV-88133r1_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. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212
Fix: F-79923r1_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
Windows Server 2016 must be configured to audit System - Security System Extension successes.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000420
Vuln IDs
V-73483
Rule IDs
SV-88135r1_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. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212
Fix: F-79925r1_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
Administrator accounts must not be enumerated during elevation.
RMF Control
SC-3
Severity
M
CCI
CCI-001084
Version
WN16-CC-000280
Vuln IDs
V-73487
Rule IDs
SV-88139r1_rule
Enumeration of administrator accounts when elevating can provide part of the logon information to an unauthorized user. This setting configures the system to always require users to type in a username and password to elevate a running application.
Fix: F-79929r1_fix

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

b
Windows Server 2016 must be configured to audit System - System Integrity successes.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000440
Vuln IDs
V-73489
Rule IDs
SV-88141r1_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. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000471-GPOS-00215, SRG-OS-000471-GPOS-00216, SRG-OS-000477-GPOS-00222
Fix: F-79931r1_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
Windows Server 2016 must be configured to audit System - System Integrity failures.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000450
Vuln IDs
V-73491
Rule IDs
SV-88143r1_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. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000471-GPOS-00215, SRG-OS-000471-GPOS-00216, SRG-OS-000477-GPOS-00222
Fix: F-79933r1_fix

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

b
The display of slide shows on the lock screen must be disabled.
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
WN16-CC-000010
Vuln IDs
V-73493
Rule IDs
SV-88145r1_rule
Slide shows that are displayed on the lock screen could display sensitive information to unauthorized personnel. Turning off this feature will limit access to the information to a logged-on user.
Fix: F-79935r1_fix

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

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
WN16-MS-000020
Vuln IDs
V-73495
Rule IDs
SV-88147r1_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-79937r1_fix

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

b
WDigest Authentication must be disabled on Windows Server 2016.
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
WN16-CC-000030
Vuln IDs
V-73497
Rule IDs
SV-88149r2_rule
When the WDigest Authentication protocol is enabled, plain-text passwords are stored in the Local Security Authority Subsystem Service (LSASS), exposing them to theft. WDigest is disabled by default in Windows Server 2016. This setting ensures this is enforced.
Fix: F-79939r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MS Security Guide >> "WDigest Authentication (disabling may require KB2871997)" to "Disabled". This policy setting requires the installation of the SecGuide custom templates included with the STIG package. "SecGuide.admx" and " SecGuide.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

a
Internet Protocol version 6 (IPv6) source routing must be configured to the highest protection level to prevent IP source routing.
RMF Control
CM-6
Severity
L
CCI
CCI-000366
Version
WN16-CC-000040
Vuln IDs
V-73499
Rule IDs
SV-88151r1_rule
Configuring the system to disable IPv6 source routing protects against spoofing.
Fix: F-79941r1_fix

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

a
Source routing must be configured to the highest protection level to prevent Internet Protocol (IP) source routing.
RMF Control
CM-6
Severity
L
CCI
CCI-000366
Version
WN16-CC-000050
Vuln IDs
V-73501
Rule IDs
SV-88153r1_rule
Configuring the system to disable IP source routing protects against spoofing.
Fix: F-79943r1_fix

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

a
Windows Server 2016 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
WN16-CC-000060
Vuln IDs
V-73503
Rule IDs
SV-88155r1_rule
Allowing ICMP redirect of routes can lead to traffic not being routed properly. When disabled, this forces ICMP to be routed via the shortest path first.
Fix: F-79945r1_fix

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

a
Windows Server 2016 must be configured to ignore NetBIOS name release requests except from WINS servers.
RMF Control
SC-5
Severity
L
CCI
CCI-002385
Version
WN16-CC-000070
Vuln IDs
V-73505
Rule IDs
SV-88157r1_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 server's WINS resolution capability.
Fix: F-79947r1_fix

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

b
Insecure logons to an SMB server must be disabled.
RMF Control
CM-6
Severity
M
CCI
CCI-000366
Version
WN16-CC-000080
Vuln IDs
V-73507
Rule IDs
SV-88159r1_rule
Insecure guest logons allow unauthenticated access to shared folders. Shared resources on a system must require authentication to establish proper access.
Fix: F-79949r1_fix

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

b
Hardened UNC paths must be defined to require mutual authentication and integrity for at least the \\*\SYSVOL and \\*\NETLOGON shares.
RMF Control
CM-6
Severity
M
CCI
CCI-000366
Version
WN16-CC-000090
Vuln IDs
V-73509
Rule IDs
SV-88161r1_rule
Additional security requirements are applied to Universal Naming Convention (UNC) paths specified in hardened UNC paths before allowing access to them. This aids in preventing tampering with or spoofing of connections to these paths.
Fix: F-79951r1_fix

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

b
Command line data must be included in process creation events.
RMF Control
AU-3
Severity
M
CCI
CCI-000135
Version
WN16-CC-000100
Vuln IDs
V-73511
Rule IDs
SV-88163r1_rule
Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Enabling "Include command line data for process creation events" will record the command line information with the process creation events in the log. This can provide additional detail when malware has run on a system.
Fix: F-79953r1_fix

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

b
Early Launch Antimalware, Boot-Start Driver Initialization Policy must prevent boot drivers identified as bad.
RMF Control
CM-6
Severity
M
CCI
CCI-000366
Version
WN16-CC-000140
Vuln IDs
V-73521
Rule IDs
SV-88173r1_rule
Compromised boot drivers can introduce malware prior to protection mechanisms that load after initialization. The Early Launch Antimalware driver can limit allowed drivers based on classifications determined by the malware protection application. At a minimum, drivers determined to be bad must not be allowed.
Fix: F-79961r1_fix

The default behavior is for Early Launch Antimalware - Boot-Start Driver Initialization policy to enforce "Good, unknown and bad but critical" (preventing "bad"). If this needs to be corrected or a more secure setting is desired, configure the policy value for Computer Configuration >> Administrative Templates >> System >> Early Launch Antimalware >> "Boot-Start Driver Initialization Policy" to "Not Configured" or "Enabled" with any option other than "All" selected.

b
Group Policy objects must be reprocessed even if they have not changed.
RMF Control
CM-6
Severity
M
CCI
CCI-000366
Version
WN16-CC-000150
Vuln IDs
V-73525
Rule IDs
SV-88177r1_rule
Registry entries for group policy settings can potentially be changed from the required configuration. This could occur as part of troubleshooting or by a malicious process on a compromised system. Enabling this setting and then selecting the "Process even if the Group Policy objects have not changed" option ensures 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-79965r1_fix

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

b
Downloading print driver packages over HTTP must be prevented.
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
WN16-CC-000160
Vuln IDs
V-73527
Rule IDs
SV-88179r1_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 will prevent uncontrolled updates to the system. This setting prevents the computer from downloading print driver packages over HTTP.
Fix: F-79969r1_fix

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

b
Printing over HTTP must be prevented.
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
WN16-CC-000170
Vuln IDs
V-73529
Rule IDs
SV-88181r1_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 will prevent 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-79971r1_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 network selection user interface (UI) must not be displayed on the logon screen.
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
WN16-CC-000180
Vuln IDs
V-73531
Rule IDs
SV-88185r1_rule
Enabling interaction with the network selection UI allows users to change connections to available networks without signing in to Windows.
Fix: F-79973r1_fix

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

b
Local users on domain-joined computers must not be enumerated.
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
WN16-MS-000030
Vuln IDs
V-73533
Rule IDs
SV-88187r1_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-79975r1_fix

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

b
Users must be prompted to authenticate when the system wakes from sleep (on battery).
RMF Control
CM-6
Severity
M
CCI
CCI-000366
Version
WN16-CC-000210
Vuln IDs
V-73537
Rule IDs
SV-88197r1_rule
A system that does not require authentication when resuming from sleep may provide access to unauthorized users. Authentication must always be required when accessing a system. This setting ensures users are prompted for a password when the system wakes from sleep (on battery).
Fix: F-79979r1_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
Users must be prompted to authenticate when the system wakes from sleep (plugged in).
RMF Control
CM-6
Severity
M
CCI
CCI-000366
Version
WN16-CC-000220
Vuln IDs
V-73539
Rule IDs
SV-88201r1_rule
A system that does not require authentication when resuming from sleep may provide access to unauthorized users. Authentication must always be required when accessing a system. This setting ensures users are prompted for a password when the system wakes from sleep (plugged in).
Fix: F-79981r1_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
Unauthenticated Remote Procedure Call (RPC) clients must be restricted from connecting to the RPC server.
RMF Control
IA-3
Severity
M
CCI
CCI-001967
Version
WN16-MS-000040
Vuln IDs
V-73541
Rule IDs
SV-88203r1_rule
Unauthenticated RPC clients may allow anonymous access to sensitive information. Configuring RPC to restrict unauthenticated RPC clients from connecting to the RPC server will prevent anonymous connections.
Fix: F-79983r1_fix

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

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
WN16-CC-000240
Vuln IDs
V-73543
Rule IDs
SV-88207r1_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 will prevent 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-79985r1_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
WN16-CC-000250
Vuln IDs
V-73545
Rule IDs
SV-88209r1_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-79991r1_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
WN16-CC-000260
Vuln IDs
V-73547
Rule IDs
SV-88211r1_rule
Allowing AutoRun commands to execute may introduce malicious code to a system. Configuring this setting prevents AutoRun commands from executing.
Fix: F-79997r1_fix

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

c
AutoPlay must be disabled for all drives.
RMF Control
CM-7
Severity
H
CCI
CCI-001764
Version
WN16-CC-000270
Vuln IDs
V-73549
Rule IDs
SV-88213r1_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-79999r1_fix

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

b
Windows Telemetry must be configured to Security or Basic.
RMF Control
CM-6
Severity
M
CCI
CCI-000366
Version
WN16-CC-000290
Vuln IDs
V-73551
Rule IDs
SV-88215r1_rule
Some features may communicate with the vendor, sending system information or downloading data or components for the feature. Limiting this capability will prevent potentially sensitive information from being sent outside the enterprise. The "Security" option for Telemetry configures the lowest amount of data, effectively none outside of the Malicious Software Removal Tool (MSRT), Defender, and telemetry client settings. "Basic" sends basic diagnostic and usage data and may be required to support some Microsoft services.
Fix: F-80001r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Data Collection and Preview Builds>> "Allow Telemetry" to "Enabled" with "0 - Security [Enterprise Only]" or "1 - Basic" selected in "Options".

b
The Application event log size must be configured to 32768 KB or greater.
RMF Control
AU-4
Severity
M
CCI
CCI-001849
Version
WN16-CC-000300
Vuln IDs
V-73553
Rule IDs
SV-88217r1_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-80003r1_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
WN16-CC-000310
Vuln IDs
V-73555
Rule IDs
SV-88219r1_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-80005r1_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 System event log size must be configured to 32768 KB or greater.
RMF Control
AU-4
Severity
M
CCI
CCI-001849
Version
WN16-CC-000320
Vuln IDs
V-73557
Rule IDs
SV-88221r1_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-80007r1_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 Server 2016 Windows SmartScreen must be enabled.
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
WN16-CC-000330
Vuln IDs
V-73559
Rule IDs
SV-88223r2_rule
Windows SmartScreen helps protect systems from programs downloaded from the internet that may be malicious. Enabling SmartScreen will warn users of potentially malicious programs.
Fix: F-80009r1_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> File Explorer >> "Configure Windows SmartScreen" to "Enabled".

b
Explorer Data Execution Prevention must be enabled.
RMF Control
SI-16
Severity
M
CCI
CCI-002824
Version
WN16-CC-000340
Vuln IDs
V-73561
Rule IDs
SV-88225r1_rule
Data Execution Prevention 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-80011r1_fix

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

a
Turning off File Explorer heap termination on corruption must be disabled.
RMF Control
CM-6
Severity
L
CCI
CCI-000366
Version
WN16-CC-000350
Vuln IDs
V-73563
Rule IDs
SV-88227r1_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-80013r1_fix

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

b
File Explorer shell protocol must run in protected mode.
RMF Control
CM-6
Severity
M
CCI
CCI-000366
Version
WN16-CC-000360
Vuln IDs
V-73565
Rule IDs
SV-88229r1_rule
The shell protocol will limit the set of folders that 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-80015r1_fix

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

b
Passwords must not be saved in the Remote Desktop Client.
RMF Control
IA-11
Severity
M
CCI
CCI-002038
Version
WN16-CC-000370
Vuln IDs
V-73567
Rule IDs
SV-88231r1_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. Satisfies: SRG-OS-000373-GPOS-00157, SRG-OS-000373-GPOS-00156
Fix: F-80017r1_fix

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

b
Local drives must be prevented from sharing with Remote Desktop Session Hosts.
RMF Control
SC-4
Severity
M
CCI
CCI-001090
Version
WN16-CC-000380
Vuln IDs
V-73569
Rule IDs
SV-88233r1_rule
Preventing users from sharing the local drives on their client computers with Remote Session Hosts that they access helps reduce possible exposure of sensitive data.
Fix: F-80019r1_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
WN16-CC-000390
Vuln IDs
V-73571
Rule IDs
SV-88235r1_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. Satisfies: SRG-OS-000373-GPOS-00157, SRG-OS-000373-GPOS-00156
Fix: F-80021r1_fix

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

b
The Remote Desktop Session Host must require secure Remote Procedure Call (RPC) communications.
RMF Control
AC-17
Severity
M
CCI
CCI-001453
Version
WN16-CC-000400
Vuln IDs
V-73573
Rule IDs
SV-88237r1_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-80023r1_fix

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

b
Remote Desktop Services must be configured with the client connection encryption set to High Level.
RMF Control
AC-17
Severity
M
CCI
CCI-001453
Version
WN16-CC-000410
Vuln IDs
V-73575
Rule IDs
SV-88239r1_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-80025r1_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" with "High Level" selected.

b
Attachments must be prevented from being downloaded from RSS feeds.
RMF Control
CM-6
Severity
M
CCI
CCI-000366
Version
WN16-CC-000420
Vuln IDs
V-73577
Rule IDs
SV-88241r1_rule
Attachments from RSS feeds may not be secure. This setting will prevent attachments from being downloaded from RSS feeds.
Fix: F-80027r1_fix

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

b
Basic authentication for RSS feeds over HTTP must not be used.
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
WN16-CC-000430
Vuln IDs
V-73579
Rule IDs
SV-88243r1_rule
Basic authentication uses plain-text passwords that could be used to compromise a system. Disabling Basic authentication will reduce this potential.
Fix: F-80029r1_fix

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

b
Indexing of encrypted files must be turned off.
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
WN16-CC-000440
Vuln IDs
V-73581
Rule IDs
SV-88245r1_rule
Indexing of encrypted files may expose sensitive data. This setting prevents encrypted files from being indexed.
Fix: F-80031r1_fix

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

b
Users must be prevented from changing installation options.
RMF Control
CM-11
Severity
M
CCI
CCI-001812
Version
WN16-CC-000450
Vuln IDs
V-73583
Rule IDs
SV-88247r1_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-80033r1_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
WN16-CC-000460
Vuln IDs
V-73585
Rule IDs
SV-88249r1_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-80035r1_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
WN16-CC-000470
Vuln IDs
V-73587
Rule IDs
SV-88251r1_rule
Web-based programs may attempt to install malicious software on a system. Ensuring users are notified if a web-based program attempts to install software allows them to refuse the installation.
Fix: F-80037r1_fix

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

b
Automatically signing in the last interactive user after a system-initiated restart must be disabled.
RMF Control
CM-6
Severity
M
CCI
CCI-000366
Version
WN16-CC-000480
Vuln IDs
V-73589
Rule IDs
SV-88253r1_rule
Windows can be configured to automatically sign the user back in after a Windows Update restart. Some protections are in place to help ensure this is done in a secure fashion; however, disabling this will prevent the caching of credentials for this purpose and also ensure the user is aware of the restart.
Fix: F-80039r1_fix

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

b
PowerShell script block logging must be enabled.
RMF Control
AU-3
Severity
M
CCI
CCI-000135
Version
WN16-CC-000490
Vuln IDs
V-73591
Rule IDs
SV-88255r1_rule
Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Enabling PowerShell script block logging will record detailed information from the processing of PowerShell commands and scripts. This can provide additional detail when malware has run on a system.
Fix: F-80041r1_fix

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

c
The Windows Remote Management (WinRM) client must not use Basic authentication.
RMF Control
MA-4
Severity
H
CCI
CCI-000877
Version
WN16-CC-000500
Vuln IDs
V-73593
Rule IDs
SV-88257r1_rule
Basic authentication uses plain-text passwords that could be used to compromise a system. Disabling Basic authentication will reduce this potential.
Fix: F-80043r1_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
WN16-CC-000510
Vuln IDs
V-73595
Rule IDs
SV-88259r1_rule
Unencrypted remote access to a system can allow sensitive information to be compromised. Windows remote management connections must be encrypted to prevent this. Satisfies: SRG-OS-000393-GPOS-00173, SRG-OS-000394-GPOS-00174
Fix: F-80045r1_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
WN16-CC-000520
Vuln IDs
V-73597
Rule IDs
SV-88261r1_rule
Digest authentication is not as strong as other options and may be subject to man-in-the-middle attacks. Disallowing Digest authentication will reduce this potential.
Fix: F-80047r1_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
WN16-CC-000530
Vuln IDs
V-73599
Rule IDs
SV-88263r1_rule
Basic authentication uses plain-text passwords that could be used to compromise a system. Disabling Basic authentication will reduce this potential.
Fix: F-80049r1_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
WN16-CC-000540
Vuln IDs
V-73601
Rule IDs
SV-88265r1_rule
Unencrypted remote access to a system can allow sensitive information to be compromised. Windows remote management connections must be encrypted to prevent this. Satisfies: SRG-OS-000393-GPOS-00173, SRG-OS-000394-GPOS-00174
Fix: F-80051r1_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
WN16-CC-000550
Vuln IDs
V-73603
Rule IDs
SV-88267r1_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. Satisfies: SRG-OS-000373-GPOS-00157, SRG-OS-000373-GPOS-00156
Fix: F-80053r1_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 DoD Root CA certificates must be installed in the Trusted Root Store.
RMF Control
IA-5
Severity
M
CCI
CCI-000185
Version
WN16-PK-000010
Vuln IDs
V-73605
Rule IDs
SV-88269r3_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. Satisfies: SRG-OS-000066-GPOS-00034, SRG-OS-000403-GPOS-00182
Fix: F-87311r1_fix

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

b
The DoD Interoperability Root CA cross-certificates must be installed in the Untrusted Certificates Store on unclassified systems.
RMF Control
IA-5
Severity
M
CCI
CCI-000185
Version
WN16-PK-000020
Vuln IDs
V-73607
Rule IDs
SV-88271r3_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. Satisfies: SRG-OS-000066-GPOS-00034, SRG-OS-000403-GPOS-00182
Fix: F-98487r3_fix

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

b
The US DoD CCEB Interoperability Root CA cross-certificates must be installed in the Untrusted Certificates Store on unclassified systems.
RMF Control
IA-5
Severity
M
CCI
CCI-000185
Version
WN16-PK-000030
Vuln IDs
V-73609
Rule IDs
SV-88273r3_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. Satisfies: SRG-OS-000066-GPOS-00034, SRG-OS-000403-GPOS-00182
Fix: F-98495r3_fix

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

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
WN16-SO-000020
Vuln IDs
V-73621
Rule IDs
SV-88285r1_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 does exist, enabling this setting will prevent network access, limiting the account to local console logon only.
Fix: F-80071r1_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
Windows Server 2016 built-in administrator account must be renamed.
RMF Control
CM-6
Severity
M
CCI
CCI-000366
Version
WN16-SO-000030
Vuln IDs
V-73623
Rule IDs
SV-88287r2_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-80073r1_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
Windows Server 2016 built-in guest account must be renamed.
RMF Control
CM-6
Severity
M
CCI
CCI-000366
Version
WN16-SO-000040
Vuln IDs
V-73625
Rule IDs
SV-88289r2_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-80075r1_fix

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

b
Audit policy using subcategories must be enabled.
RMF Control
AU-12
Severity
M
CCI
CCI-000169
Version
WN16-SO-000050
Vuln IDs
V-73627
Rule IDs
SV-88291r1_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-80077r1_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
Domain controllers must require LDAP access signing.
RMF Control
SC-8
Severity
M
CCI
CCI-002418
Version
WN16-DC-000320
Vuln IDs
V-73629
Rule IDs
SV-88293r1_rule
Unsigned network traffic is susceptible to man-in-the-middle attacks, where an intruder captures packets between the server and the client and modifies them before forwarding them to the client. In the case of an LDAP server, this means that an attacker could cause a client to make decisions based on false records from the LDAP directory. The risk of an attacker pulling this off can be decreased by implementing strong physical security measures to protect the network infrastructure. Furthermore, implementing Internet Protocol security (IPsec) authentication header mode (AH), which performs mutual authentication and packet integrity for Internet Protocol (IP) traffic, can make all types of man-in-the-middle attacks extremely difficult. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188
Fix: F-80079r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Domain controller: LDAP server signing requirements" to "Require signing".

b
Domain controllers must be configured to allow reset of machine account passwords.
RMF Control
CM-6
Severity
M
CCI
CCI-000366
Version
WN16-DC-000330
Vuln IDs
V-73631
Rule IDs
SV-88295r1_rule
Enabling this setting on all domain controllers in a domain prevents domain members from changing their computer account passwords. If these passwords are weak or compromised, the inability to change them may leave these computers vulnerable.
Fix: F-80081r1_fix

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

b
The setting Domain member: Digitally encrypt or sign secure channel data (always) must be configured to Enabled.
RMF Control
SC-8
Severity
M
CCI
CCI-002418
Version
WN16-SO-000080
Vuln IDs
V-73633
Rule IDs
SV-88297r1_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. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188
Fix: F-80083r1_fix

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

b
The setting Domain member: Digitally encrypt secure channel data (when possible) must be configured to enabled.
RMF Control
SC-8
Severity
M
CCI
CCI-002418
Version
WN16-SO-000090
Vuln IDs
V-73635
Rule IDs
SV-88299r1_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. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188
Fix: F-80085r1_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
The setting Domain member: Digitally sign secure channel data (when possible) must be configured to Enabled.
RMF Control
SC-8
Severity
M
CCI
CCI-002418
Version
WN16-SO-000100
Vuln IDs
V-73637
Rule IDs
SV-88301r1_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. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188
Fix: F-80087r1_fix

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

b
The computer account password must not be prevented from being reset.
RMF Control
IA-3
Severity
M
CCI
CCI-001967
Version
WN16-SO-000110
Vuln IDs
V-73639
Rule IDs
SV-88303r1_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 the system. A new password for the computer account will be generated every 30 days.
Fix: F-80089r1_fix

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

b
The maximum age for machine account passwords must be configured to 30 days or less.
RMF Control
CM-6
Severity
M
CCI
CCI-000366
Version
WN16-SO-000120
Vuln IDs
V-73641
Rule IDs
SV-88305r1_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 must be set to no more than 30 days, ensuring the machine changes its password monthly.
Fix: F-80091r1_fix

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

b
Windows Server 2016 must be configured to require a strong session key.
RMF Control
SC-8
Severity
M
CCI
CCI-002418
Version
WN16-SO-000130
Vuln IDs
V-73643
Rule IDs
SV-88307r1_rule
A computer connecting to a domain controller will establish a secure channel. The secure channel connection may be subject to compromise, such as hijacking or eavesdropping, if strong session keys are not used to establish the connection. Requiring strong session keys enforces 128-bit encryption between systems. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188
Fix: F-80093r1_fix

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

b
The machine inactivity limit must be set to 15 minutes, locking the system with the screen saver.
RMF Control
AC-11
Severity
M
CCI
CCI-000057
Version
WN16-SO-000140
Vuln IDs
V-73645
Rule IDs
SV-88309r2_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-80095r2_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.

b
The required legal notice must be configured to display before console logon.
RMF Control
AC-8
Severity
M
CCI
CCI-000048
Version
WN16-SO-000150
Vuln IDs
V-73647
Rule IDs
SV-88311r2_rule
Failure to display the logon banner prior to a logon attempt will negate legal proceedings resulting from unauthorized access to system resources. Satisfies: SRG-OS-000023-GPOS-00006, SRG-OS-000024-GPOS-00007, SRG-OS-000228-GPOS-00088
Fix: F-80097r2_fix

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

a
The Windows dialog box title for the legal banner must be configured with the appropriate text.
RMF Control
AC-8
Severity
L
CCI
CCI-000048
Version
WN16-SO-000160
Vuln IDs
V-73649
Rule IDs
SV-88313r1_rule
Failure to display the logon banner prior to a logon attempt will negate legal proceedings resulting from unauthorized access to system resources. Satisfies: SRG-OS-000023-GPOS-00006, SRG-OS-000228-GPOS-00088
Fix: F-80099r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Interactive Logon: Message title for users attempting to log on" to "DoD Notice and Consent Banner", "US Department of Defense Warning Statement", or an organization-defined equivalent. If an organization-defined title is used, it can in no case contravene or modify the language of the message text required in WN16-SO-000150.

b
Caching of logon credentials must be limited.
RMF Control
CM-6
Severity
M
CCI
CCI-000366
Version
WN16-MS-000050
Vuln IDs
V-73651
Rule IDs
SV-88315r1_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-80271r1_fix

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.

b
The setting Microsoft network client: Digitally sign communications (always) must be configured to Enabled.
RMF Control
SC-8
Severity
M
CCI
CCI-002418
Version
WN16-SO-000190
Vuln IDs
V-73653
Rule IDs
SV-88317r1_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. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188
Fix: F-80103r1_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 setting Microsoft network client: Digitally sign communications (if server agrees) must be configured to Enabled.
RMF Control
SC-8
Severity
M
CCI
CCI-002418
Version
WN16-SO-000200
Vuln IDs
V-73655
Rule IDs
SV-88319r1_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. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188
Fix: F-80105r1_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 Server Message Block (SMB) servers.
RMF Control
IA-5
Severity
M
CCI
CCI-000197
Version
WN16-SO-000210
Vuln IDs
V-73657
Rule IDs
SV-88321r1_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 determine if there is a way to support encrypted password authentication.
Fix: F-80107r1_fix

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

b
The setting Microsoft network server: Digitally sign communications (always) must be configured to Enabled.
RMF Control
SC-8
Severity
M
CCI
CCI-002418
Version
WN16-SO-000230
Vuln IDs
V-73661
Rule IDs
SV-88325r1_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. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188
Fix: F-80111r1_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 setting Microsoft network server: Digitally sign communications (if client agrees) must be configured to Enabled.
RMF Control
SC-8
Severity
M
CCI
CCI-002418
Version
WN16-SO-000240
Vuln IDs
V-73663
Rule IDs
SV-88327r1_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. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188
Fix: F-80113r1_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".

c
Anonymous enumeration of Security Account Manager (SAM) accounts must not be allowed.
RMF Control
CM-6
Severity
H
CCI
CCI-000366
Version
WN16-SO-000260
Vuln IDs
V-73667
Rule IDs
SV-88331r1_rule
Anonymous enumeration of SAM accounts allows anonymous logon users (null session connections) to list all accounts names, thus providing a list of potential points to attack the system.
Fix: F-80117r1_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 not be allowed.
RMF Control
SC-4
Severity
H
CCI
CCI-001090
Version
WN16-SO-000270
Vuln IDs
V-73669
Rule IDs
SV-88333r1_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-80119r1_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
Windows Server 2016 must be configured to prevent anonymous users from having the same permissions as the Everyone group.
RMF Control
CM-6
Severity
M
CCI
CCI-000366
Version
WN16-SO-000290
Vuln IDs
V-73673
Rule IDs
SV-88337r1_rule
Access by anonymous users must be restricted. If this setting is enabled, 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-80123r1_fix

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

c
Anonymous access to Named Pipes and Shares must be restricted.
RMF Control
SC-4
Severity
H
CCI
CCI-001090
Version
WN16-SO-000300
Vuln IDs
V-73675
Rule IDs
SV-88339r1_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-80125r1_fix

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

b
Remote calls to the Security Account Manager (SAM) must be restricted to Administrators.
RMF Control
AC-6
Severity
M
CCI
CCI-002235
Version
WN16-MS-000310
Vuln IDs
V-73677
Rule IDs
SV-88341r2_rule
The Windows Security Account Manager (SAM) stores users' passwords. Restricting Remote Procedure Call (RPC) connections to the SAM to Administrators helps protect those credentials.
Fix: F-80127r1_fix

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

b
Services using Local System that use Negotiate when reverting to NTLM authentication must use the computer identity instead of authenticating anonymously.
RMF Control
CM-6
Severity
M
CCI
CCI-000366
Version
WN16-SO-000320
Vuln IDs
V-73679
Rule IDs
SV-88343r1_rule
Services using Local System that use Negotiate when reverting to NTLM authentication may gain unauthorized access if allowed to authenticate anonymously versus using the computer identity.
Fix: F-80129r1_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
WN16-SO-000330
Vuln IDs
V-73681
Rule IDs
SV-88345r1_rule
NTLM sessions that are allowed to fall back to Null (unauthenticated) sessions may gain unauthorized access.
Fix: F-80131r1_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
WN16-SO-000340
Vuln IDs
V-73683
Rule IDs
SV-88347r1_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-80133r1_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
WN16-SO-000350
Vuln IDs
V-73685
Rule IDs
SV-88349r2_rule
Certain encryption types are no longer considered secure. The DES and RC4 encryption suites must not be used for Kerberos encryption. Note: Organizations with domain controllers running earlier versions of Windows where RC4 encryption is enabled, selecting "The other domain supports Kerberos AES Encryption" on domain trusts, may be required to allow client communication across the trust relationship.
Fix: F-97107r2_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: Organizations with domain controllers running earlier versions of Windows where RC4 encryption is enabled, selecting "The other domain supports Kerberos AES Encryption" on domain trusts, may be required to allow client communication across the trust relationship.

c
Windows Server 2016 must be configured to prevent the storage of the LAN Manager hash of passwords.
RMF Control
IA-5
Severity
H
CCI
CCI-000196
Version
WN16-SO-000360
Vuln IDs
V-73687
Rule IDs
SV-88351r1_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 a LAN Manager hash of the password is stored in the SAM the next time the password is changed.
Fix: F-80137r1_fix

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

c
The LAN Manager 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
WN16-SO-000380
Vuln IDs
V-73691
Rule IDs
SV-88355r1_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 standalone computers that are running later versions.
Fix: F-80141r1_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
Windows Server 2016 must be configured to at least negotiate signing for LDAP client signing.
RMF Control
CM-6
Severity
M
CCI
CCI-000366
Version
WN16-SO-000390
Vuln IDs
V-73693
Rule IDs
SV-88357r1_rule
This setting controls the signing requirements for LDAP clients. This must be set to "Negotiate signing" or "Require signing", depending on the environment and type of LDAP server in use.
Fix: F-80143r1_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
Session security for NTLM SSP-based clients must be configured to require NTLMv2 session security and 128-bit encryption.
RMF Control
CM-6
Severity
M
CCI
CCI-000366
Version
WN16-SO-000400
Vuln IDs
V-73695
Rule IDs
SV-88359r1_rule
Microsoft has implemented a variety of security support providers for use with Remote Procedure Call (RPC) sessions. All of the options must be enabled to ensure the maximum security level.
Fix: F-80145r1_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
Session security for NTLM SSP-based servers must be configured to require NTLMv2 session security and 128-bit encryption.
RMF Control
CM-6
Severity
M
CCI
CCI-000366
Version
WN16-SO-000410
Vuln IDs
V-73697
Rule IDs
SV-88361r1_rule
Microsoft has implemented a variety of security support providers for use with Remote Procedure Call (RPC) sessions. All of the options must be enabled to ensure the maximum security level.
Fix: F-80147r1_fix

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

b
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
WN16-SO-000420
Vuln IDs
V-73699
Rule IDs
SV-88363r1_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-80149r1_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
Windows Server 2016 must be configured to use FIPS-compliant algorithms for encryption, hashing, and signing.
RMF Control
AC-17
Severity
M
CCI
CCI-000068
Version
WN16-SO-000430
Vuln IDs
V-73701
Rule IDs
SV-88365r1_rule
This setting ensures 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. Satisfies: SRG-OS-000033-GPOS-00014, SRG-OS-000478-GPOS-00223
Fix: F-80151r1_fix

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

a
The default permissions of global system objects must be strengthened.
RMF Control
CM-6
Severity
L
CCI
CCI-000366
Version
WN16-SO-000450
Vuln IDs
V-73705
Rule IDs
SV-88369r1_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 Discretionary Access Control List (DACL) that specifies who can access the objects with what permissions. When this policy is enabled, the default DACL is stronger, allowing non-administrative users to read shared objects but not to modify shared objects they did not create.
Fix: F-80155r1_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
WN16-SO-000460
Vuln IDs
V-73707
Rule IDs
SV-88371r1_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-00157, SRG-OS-000373-GPOS-00156
Fix: F-80157r1_fix

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

b
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
WN16-SO-000470
Vuln IDs
V-73709
Rule IDs
SV-88373r1_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-80159r1_fix

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".

b
User Account Control must, at a minimum, prompt administrators for consent on the secure desktop.
RMF Control
SC-3
Severity
M
CCI
CCI-001084
Version
WN16-SO-000480
Vuln IDs
V-73711
Rule IDs
SV-88375r1_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-80161r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "User Account Control: Behavior of the elevation prompt for administrators in Admin Approval Mode" to "Prompt for consent on the secure desktop". The more secure option for this setting, "Prompt for credentials on the secure desktop", would also be acceptable.

b
User Account Control must automatically deny standard user requests for elevation.
RMF Control
IA-11
Severity
M
CCI
CCI-002038
Version
WN16-SO-000490
Vuln IDs
V-73713
Rule IDs
SV-88377r1_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-00157, SRG-OS-000373-GPOS-00156
Fix: F-80163r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "User Account Control: Behavior of the elevation prompt for standard users" to "Automatically deny elevation requests".

b
User Account Control must be configured to detect application installations and prompt for elevation.
RMF Control
SC-3
Severity
M
CCI
CCI-001084
Version
WN16-SO-000500
Vuln IDs
V-73715
Rule IDs
SV-88379r1_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-80165r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "User Account Control: Detect application installations and prompt for elevation" to "Enabled".

b
User Account Control must only elevate UIAccess applications that are installed in secure locations.
RMF Control
SC-3
Severity
M
CCI
CCI-001084
Version
WN16-SO-000510
Vuln IDs
V-73717
Rule IDs
SV-88381r1_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-80167r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "User Account Control: Only elevate UIAccess applications that are installed in secure locations" to "Enabled".

b
User Account Control must run all administrators in Admin Approval Mode, enabling UAC.
RMF Control
IA-11
Severity
M
CCI
CCI-002038
Version
WN16-SO-000520
Vuln IDs
V-73719
Rule IDs
SV-88383r1_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-00157, SRG-OS-000373-GPOS-00156
Fix: F-80169r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "User Account Control: Run all administrators in Admin Approval Mode" to "Enabled".

b
User Account Control must virtualize file and registry write failures to per-user locations.
RMF Control
SC-3
Severity
M
CCI
CCI-001084
Version
WN16-SO-000530
Vuln IDs
V-73721
Rule IDs
SV-88385r1_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-80171r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "User Account Control: Virtualize file and registry write failures to per-user locations" to "Enabled".

b
The Access Credential Manager as a trusted caller user right must not be assigned to any groups or accounts.
RMF Control
AC-6
Severity
M
CCI
CCI-002235
Version
WN16-UR-000010
Vuln IDs
V-73729
Rule IDs
SV-88393r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Access Credential Manager as a trusted caller" user right may be able to retrieve the credentials of other accounts from Credential Manager.
Fix: F-80179r1_fix

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

b
The Access this computer from the network user right must only be assigned to the Administrators, Authenticated Users, and Enterprise Domain Controllers groups on domain controllers.
RMF Control
AC-3
Severity
M
CCI
CCI-000213
Version
WN16-DC-000340
Vuln IDs
V-73731
Rule IDs
SV-88395r3_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Access this computer from the network" right may access resources on the system, and this right must be limited to those requiring it.
Fix: F-80181r1_fix

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

b
The Access this computer from the network user right must only be assigned to the Administrators and Authenticated Users groups on member servers.
RMF Control
AC-3
Severity
M
CCI
CCI-000213
Version
WN16-MS-000340
Vuln IDs
V-73733
Rule IDs
SV-88397r3_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Access this computer from the network" user right may access resources on the system, and this right must be limited to those requiring it.
Fix: F-88221r1_fix

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

c
The Act as part of the operating system user right must not be assigned to any groups or accounts.
RMF Control
AC-6
Severity
H
CCI
CCI-002235
Version
WN16-UR-000030
Vuln IDs
V-73735
Rule IDs
SV-88399r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Act as part of the operating system" user right can assume the identity of any user and gain access to resources that the user is authorized to access. Any accounts with this right can take complete control of a system.
Fix: F-80185r1_fix

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

b
The Add workstations to domain user right must only be assigned to the Administrators group.
RMF Control
AC-6
Severity
M
CCI
CCI-002235
Version
WN16-DC-000350
Vuln IDs
V-73737
Rule IDs
SV-88401r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Add workstations to domain" right may add computers to a domain. This could result in unapproved or incorrectly configured systems being added to a domain.
Fix: F-80187r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Add workstations to domain" to include only the following accounts or groups: - Administrators

b
The Allow log on locally user right must only be assigned to the Administrators group.
RMF Control
AC-3
Severity
M
CCI
CCI-000213
Version
WN16-UR-000050
Vuln IDs
V-73739
Rule IDs
SV-88403r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Allow log on locally" user right can log on interactively to a system.
Fix: F-80189r1_fix

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

b
The Allow log on through Remote Desktop Services user right must only be assigned to the Administrators group.
RMF Control
AC-3
Severity
M
CCI
CCI-000213
Version
WN16-DC-000360
Vuln IDs
V-73741
Rule IDs
SV-88405r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Allow log on through Remote Desktop Services" user right can access a system through Remote Desktop.
Fix: F-80191r1_fix

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

b
The Back up files and directories user right must only be assigned to the Administrators group.
RMF Control
AC-6
Severity
M
CCI
CCI-002235
Version
WN16-UR-000070
Vuln IDs
V-73743
Rule IDs
SV-88407r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Back up files and directories" user right can circumvent file and directory permissions and could allow access to sensitive data.
Fix: F-80193r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Back up files and directories" to include only the following accounts or groups: - Administrators

b
The Create a pagefile user right must only be assigned to the Administrators group.
RMF Control
AC-6
Severity
M
CCI
CCI-002235
Version
WN16-UR-000080
Vuln IDs
V-73745
Rule IDs
SV-88409r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Create a pagefile" user right can change the size of a pagefile, which could affect system performance.
Fix: F-80195r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Create a pagefile" to include only the following accounts or groups: - Administrators

c
The Create a token object user right must not be assigned to any groups or accounts.
RMF Control
AC-6
Severity
H
CCI
CCI-002235
Version
WN16-UR-000090
Vuln IDs
V-73747
Rule IDs
SV-88411r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Create a token object" user right allows a process to create an access token. This could be used to provide elevated rights and compromise a system.
Fix: F-80197r1_fix

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

b
The Create global objects user right must only be assigned to Administrators, Service, Local Service, and Network Service.
RMF Control
AC-6
Severity
M
CCI
CCI-002235
Version
WN16-UR-000100
Vuln IDs
V-73749
Rule IDs
SV-88413r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Create global objects" user right can create objects that are available to all sessions, which could affect processes in other users' sessions.
Fix: F-80199r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Create global objects" to include only the following accounts or groups: - Administrators - Service - Local Service - Network Service

b
The Create permanent shared objects user right must not be assigned to any groups or accounts.
RMF Control
AC-6
Severity
M
CCI
CCI-002235
Version
WN16-UR-000110
Vuln IDs
V-73751
Rule IDs
SV-88415r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Create permanent shared objects" user right could expose sensitive data by creating shared objects.
Fix: F-80201r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Create permanent shared objects" to be defined but containing no entries (blank).

b
The Create symbolic links user right must only be assigned to the Administrators group.
RMF Control
AC-6
Severity
M
CCI
CCI-002235
Version
WN16-UR-000120
Vuln IDs
V-73753
Rule IDs
SV-88417r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Create symbolic links" user right can create pointers to other objects, which could expose the system to attack.
Fix: F-80203r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Create symbolic links" to include only the following accounts or groups: - Administrators Systems that have the Hyper-V role will also have "Virtual Machines" given this user right. If this needs to be added manually, enter it as "NT Virtual Machine\Virtual Machines".

c
The Debug programs user right must only be assigned to the Administrators group.
RMF Control
AC-6
Severity
H
CCI
CCI-002235
Version
WN16-UR-000130
Vuln IDs
V-73755
Rule IDs
SV-88419r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Debug programs" user right can attach a debugger to any process or to the kernel, providing complete access to sensitive and critical operating system components. This right is given to Administrators in the default configuration.
Fix: F-80205r1_fix

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

b
The Deny access to this computer from the network user right on domain controllers must be configured to prevent unauthenticated access.
RMF Control
AC-3
Severity
M
CCI
CCI-000213
Version
WN16-DC-000370
Vuln IDs
V-73757
Rule IDs
SV-88421r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Deny access to this computer from the network" user right defines the accounts that are prevented from logging on from the network. The Guests group must be assigned this right to prevent unauthenticated access.
Fix: F-80207r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny access to this computer from the network" to include the following: - Guests Group

b
The Deny access to this computer from the network user right on member servers must be configured to prevent access from highly privileged domain accounts and local accounts on domain systems, and from unauthenticated access on all systems.
RMF Control
AC-3
Severity
M
CCI
CCI-000213
Version
WN16-MS-000370
Vuln IDs
V-73759
Rule IDs
SV-88423r3_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Deny access to this computer from the network" user right defines the accounts that are prevented from logging on from the network. In an Active Directory Domain, denying logons to the Enterprise Admins and Domain Admins groups on lower-trust systems helps mitigate the risk of privilege escalation from credential theft attacks, which could lead to the compromise of an entire domain. Local accounts on domain-joined systems must also be assigned this right to decrease the risk of lateral movement resulting from credential theft attacks. The Guests group must be assigned this right to prevent unauthenticated access.
Fix: F-88223r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny access to this computer from the network" to include the following: Domain Systems Only: - Enterprise Admins group - Domain Admins group - "Local account and member of Administrators group" or "Local account" (see Note below) All Systems: - Guests group Note: These are built-in security groups. "Local account" is more restrictive but may cause issues on servers such as systems that provide failover clustering.

b
The Deny log on as a batch job user right on domain controllers must be configured to prevent unauthenticated access.
RMF Control
AC-3
Severity
M
CCI
CCI-000213
Version
WN16-DC-000380
Vuln IDs
V-73761
Rule IDs
SV-88425r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Deny log on as a batch job" user right defines accounts that are prevented from logging on to the system as a batch job, such as Task Scheduler. The Guests group must be assigned to prevent unauthenticated access.
Fix: F-80211r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny log on as a batch job" to include the following: - Guests Group

b
The Deny log on as a batch job user right on member servers must be configured to prevent access from highly privileged domain accounts on domain systems and from unauthenticated access on all systems.
RMF Control
AC-3
Severity
M
CCI
CCI-000213
Version
WN16-MS-000380
Vuln IDs
V-73763
Rule IDs
SV-88427r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Deny log on as a batch job" user right defines accounts that are prevented from logging on to the system as a batch job, such as Task Scheduler. In an Active Directory Domain, denying logons to the Enterprise Admins and Domain Admins groups on lower-trust systems helps mitigate the risk of privilege escalation from credential theft attacks, which could lead to the compromise of an entire domain. The Guests group must be assigned to prevent unauthenticated access.
Fix: F-80213r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny log on as a batch job" to include the following: Domain Systems Only: - Enterprise Admins Group - Domain Admins Group All Systems: - Guests Group

b
The Deny log on as a service user right must be configured to include no accounts or groups (blank) on domain controllers.
RMF Control
AC-3
Severity
M
CCI
CCI-000213
Version
WN16-DC-000390
Vuln IDs
V-73765
Rule IDs
SV-88429r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Deny log on as a service" user right defines accounts that are denied logon as a service. Incorrect configurations could prevent services from starting and result in a denial of service.
Fix: F-80215r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny log on as a service" to include no entries (blank).

b
The Deny log on as a service user right on member servers must be configured to prevent access from highly privileged domain accounts on domain systems. No other groups or accounts must be assigned this right.
RMF Control
AC-3
Severity
M
CCI
CCI-000213
Version
WN16-MS-000390
Vuln IDs
V-73767
Rule IDs
SV-88431r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Deny log on as a service" user right defines accounts that are denied logon as a service. In an Active Directory Domain, denying logons to the Enterprise Admins and Domain Admins groups on lower-trust systems helps mitigate the risk of privilege escalation from credential theft attacks, which could lead to the compromise of an entire domain. Incorrect configurations could prevent services from starting and result in a DoS.
Fix: F-80217r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny log on as a service" to include the following: Domain systems: - Enterprise Admins Group - Domain Admins Group

b
The Deny log on locally user right on domain controllers must be configured to prevent unauthenticated access.
RMF Control
AC-3
Severity
M
CCI
CCI-000213
Version
WN16-DC-000400
Vuln IDs
V-73769
Rule IDs
SV-88433r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Deny log on locally" user right defines accounts that are prevented from logging on interactively. The Guests group must be assigned this right to prevent unauthenticated access.
Fix: F-80219r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny log on locally" to include the following: - Guests Group

b
The Deny log on locally user right on member servers must be configured to prevent access from highly privileged domain accounts on domain systems and from unauthenticated access on all systems.
RMF Control
AC-3
Severity
M
CCI
CCI-000213
Version
WN16-MS-000400
Vuln IDs
V-73771
Rule IDs
SV-88435r3_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Deny log on locally" user right defines accounts that are prevented from logging on interactively. In an Active Directory Domain, denying logons to the Enterprise Admins and Domain Admins groups on lower-trust systems helps mitigate the risk of privilege escalation from credential theft attacks, which could lead to the compromise of an entire domain. The Guests group must be assigned this right to prevent unauthenticated access.
Fix: F-88225r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny log on locally" to include the following: Domain Systems Only: - Enterprise Admins Group - Domain Admins Group All Systems: - Guests Group

b
The Deny log on through Remote Desktop Services user right on domain controllers must be configured to prevent unauthenticated access.
RMF Control
AC-17
Severity
M
CCI
CCI-002314
Version
WN16-DC-000410
Vuln IDs
V-73773
Rule IDs
SV-88437r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Deny log on through Remote Desktop Services" user right defines the accounts that are prevented from logging on using Remote Desktop Services. The Guests group must be assigned this right to prevent unauthenticated access.
Fix: F-80223r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny log on through Remote Desktop Services" to include the following: - Guests Group

b
The Deny log on through Remote Desktop Services user right on member servers must be configured to prevent access from highly privileged domain accounts and all local accounts on domain systems and from unauthenticated access on all systems.
RMF Control
AC-17
Severity
M
CCI
CCI-002314
Version
WN16-MS-000410
Vuln IDs
V-73775
Rule IDs
SV-88439r3_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Deny log on through Remote Desktop Services" user right defines the accounts that are prevented from logging on using Remote Desktop Services. In an Active Directory Domain, denying logons to the Enterprise Admins and Domain Admins groups on lower-trust systems helps mitigate the risk of privilege escalation from credential theft attacks, which could lead to the compromise of an entire domain. Local accounts on domain-joined systems must also be assigned this right to decrease the risk of lateral movement resulting from credential theft attacks. The Guests group must be assigned this right to prevent unauthenticated access.
Fix: F-88227r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny log on through Remote Desktop Services" to include the following: Domain Systems Only: - Enterprise Admins group - Domain Admins group - Local account (see Note below) All Systems: - Guests group Note: "Local account" is referring to the Windows built-in security group.

b
The Enable computer and user accounts to be trusted for delegation user right must only be assigned to the Administrators group on domain controllers.
RMF Control
AC-6
Severity
M
CCI
CCI-002235
Version
WN16-DC-000420
Vuln IDs
V-73777
Rule IDs
SV-88441r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Enable computer and user accounts to be trusted for delegation" user right allows the "Trusted for Delegation" setting to be changed. This could allow unauthorized users to impersonate other users.
Fix: F-80227r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Enable computer and user accounts to be trusted for delegation" to include only the following accounts or groups: - Administrators

b
The Enable computer and user accounts to be trusted for delegation user right must not be assigned to any groups or accounts on member servers.
RMF Control
AC-6
Severity
M
CCI
CCI-002235
Version
WN16-MS-000420
Vuln IDs
V-73779
Rule IDs
SV-88443r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Enable computer and user accounts to be trusted for delegation" user right allows the "Trusted for Delegation" setting to be changed. This could allow unauthorized users to impersonate other users.
Fix: F-80229r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Enable computer and user accounts to be trusted for delegation" to be defined but containing no entries (blank).

b
The Force shutdown from a remote system user right must only be assigned to the Administrators group.
RMF Control
AC-6
Severity
M
CCI
CCI-002235
Version
WN16-UR-000200
Vuln IDs
V-73781
Rule IDs
SV-88445r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Force shutdown from a remote system" user right can remotely shut down a system, which could result in a denial of service.
Fix: F-80231r1_fix

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

b
The Generate security audits user right must only be assigned to Local Service and Network Service.
RMF Control
AC-6
Severity
M
CCI
CCI-002235
Version
WN16-UR-000210
Vuln IDs
V-73783
Rule IDs
SV-88447r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Generate security audits" user right specifies users and processes that can generate Security Log audit records, which must only be the system service accounts defined.
Fix: F-80233r1_fix

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

b
The Impersonate a client after authentication user right must only be assigned to Administrators, Service, Local Service, and Network Service.
RMF Control
AC-6
Severity
M
CCI
CCI-002235
Version
WN16-UR-000220
Vuln IDs
V-73785
Rule IDs
SV-88449r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Impersonate a client after authentication" user right allows a program to impersonate another user or account to run on their behalf. An attacker could use this to elevate privileges.
Fix: F-80235r1_fix

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

b
The Increase scheduling priority user right must only be assigned to the Administrators group.
RMF Control
AC-6
Severity
M
CCI
CCI-002235
Version
WN16-UR-000230
Vuln IDs
V-73787
Rule IDs
SV-88451r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Increase scheduling priority" user right can change a scheduling priority, causing performance issues or a denial of service.
Fix: F-80237r1_fix

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

b
The Load and unload device drivers user right must only be assigned to the Administrators group.
RMF Control
AC-6
Severity
M
CCI
CCI-002235
Version
WN16-UR-000240
Vuln IDs
V-73789
Rule IDs
SV-88453r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Load and unload device drivers" user right allows a user to load device drivers dynamically on a system. This could be used by an attacker to install malicious code.
Fix: F-80239r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Load and unload device drivers" to include only the following accounts or groups: - Administrators

b
The Lock pages in memory user right must not be assigned to any groups or accounts.
RMF Control
AC-6
Severity
M
CCI
CCI-002235
Version
WN16-UR-000250
Vuln IDs
V-73791
Rule IDs
SV-88455r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Lock pages in memory" user right allows physical memory to be assigned to processes, which could cause performance issues or a denial of service.
Fix: F-80241r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Lock pages in memory" to be defined but containing no entries (blank).

b
The Manage auditing and security log user right must only be assigned to the Administrators group.
RMF Control
AU-9
Severity
M
CCI
CCI-000162
Version
WN16-UR-000260
Vuln IDs
V-73793
Rule IDs
SV-88457r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Manage auditing and security log" user right can manage the security log and change auditing configurations. This could be used to clear evidence of tampering. Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029, SRG-OS-000063-GPOS-00032, SRG-OS-000337-GPOS-00129
Fix: F-80243r1_fix

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

b
The Modify firmware environment values user right must only be assigned to the Administrators group.
RMF Control
AC-6
Severity
M
CCI
CCI-002235
Version
WN16-UR-000270
Vuln IDs
V-73795
Rule IDs
SV-88459r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Modify firmware environment values" user right can change hardware configuration environment variables. This could result in hardware failures or a denial of service.
Fix: F-80245r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Modify firmware environment values" to include only the following accounts or groups: - Administrators

b
The Perform volume maintenance tasks user right must only be assigned to the Administrators group.
RMF Control
AC-6
Severity
M
CCI
CCI-002235
Version
WN16-UR-000280
Vuln IDs
V-73797
Rule IDs
SV-88461r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Perform volume maintenance tasks" user right can manage volume and disk configurations. This could be used to delete volumes, resulting in data loss or a denial of service.
Fix: F-80247r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Perform volume maintenance tasks" to include only the following accounts or groups: - Administrators

b
The Profile single process user right must only be assigned to the Administrators group.
RMF Control
AC-6
Severity
M
CCI
CCI-002235
Version
WN16-UR-000290
Vuln IDs
V-73799
Rule IDs
SV-88463r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Profile single process" user right can monitor non-system processes performance. An attacker could use this to identify processes to attack.
Fix: F-80249r1_fix

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

b
The Restore files and directories user right must only be assigned to the Administrators group.
RMF Control
AC-6
Severity
M
CCI
CCI-002235
Version
WN16-UR-000300
Vuln IDs
V-73801
Rule IDs
SV-88465r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Restore files and directories" user right can circumvent file and directory permissions and could allow access to sensitive data. It could also be used to overwrite more current data.
Fix: F-80251r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Restore files and directories" to include only the following accounts or groups: - Administrators

b
The Take ownership of files or other objects user right must only be assigned to the Administrators group.
RMF Control
AC-6
Severity
M
CCI
CCI-002235
Version
WN16-UR-000310
Vuln IDs
V-73803
Rule IDs
SV-88467r2_rule
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Take ownership of files or other objects" user right can take ownership of objects and make changes.
Fix: F-80253r1_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Take ownership of files or other objects" to include only the following accounts or groups: - Administrators

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
WN16-SO-000180
Vuln IDs
V-73807
Rule IDs
SV-88473r1_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-80265r1_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
Windows Server 2016 built-in guest account must be disabled.
RMF Control
IA-8
Severity
M
CCI
CCI-000804
Version
WN16-SO-000010
Vuln IDs
V-73809
Rule IDs
SV-88475r2_rule
A system faces an increased vulnerability threat if the built-in guest account is not disabled. This 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-80267r1_fix

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

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
WN16-00-000411
Vuln IDs
V-78123
Rule IDs
SV-92829r1_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.
Fix: F-84845r2_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
WN16-00-000412
Vuln IDs
V-78125
Rule IDs
SV-92831r1_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.
Fix: F-84847r2_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". The system must be restarted for the changes 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
Windows 2016 must be configured to audit Object Access - Other Object Access Events successes.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000285
Vuln IDs
V-90359
Rule IDs
SV-101009r1_rule
Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Auditing for other object access records events related to the management of task scheduler jobs and COM+ objects.
Fix: F-97103r1_fix

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

b
Windows 2016 must be configured to audit Object Access - Other Object Access Events failures.
RMF Control
AU-12
Severity
M
CCI
CCI-000172
Version
WN16-AU-000286
Vuln IDs
V-90361
Rule IDs
SV-101011r1_rule
Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Auditing for other object access records events related to the management of task scheduler jobs and COM+ objects.
Fix: F-97105r1_fix

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