Orphaned security identifiers (SIDs) must be removed from user rights on Windows 2008 R2.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-75915	WIN00-000190	SV-90601r1_rule		Medium

Description
Accounts or groups given rights on a system may show up as unresolved SIDs for various reasons including deletion of the accounts or groups. If the account or group objects are reanimated, there is a potential they may still have rights no longer intended. Valid domain accounts or groups may also show up as unresolved SIDs if a connection to the domain cannot be established for some reason.

STIG	Date
Windows Server 2008 R2 Domain Controller Security Technical Implementation Guide	2018-09-05

Details

Check Text ( C-75609r2_chk )
Review the effective User Rights setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. Review each User Right listed for any unresolved SIDs to determine whether they are valid, such as due to being temporarily disconnected from the domain. (Unresolved SIDs have the format of "*S-1-…".) If any unresolved SIDs exist and are not for currently valid accounts or groups, this is a finding.

Check Text ( C-75609r2_chk )

Review the effective User Rights setting in Local Group Policy Editor.
Run "gpedit.msc".

Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment.

Review each User Right listed for any unresolved SIDs to determine whether they are valid, such as due to being temporarily disconnected from the domain. (Unresolved SIDs have the format of "*S-1-…".)

If any unresolved SIDs exist and are not for currently valid accounts or groups, this is a finding.

Fix Text (F-82551r1_fix)
Remove any unresolved SIDs found in User Rights assignments and determined to not be for currently valid accounts or groups by removing the accounts or groups from the appropriate group policy.