Check: WN11-UR-000110
Microsoft Windows 11 STIG:
WN11-UR-000110
(in versions v1 r6 through v1 r1)
Title
The "Impersonate a client after authentication" user right must only be assigned to Administrators, Service, Local Service, and Network Service. (Cat II impact)
Discussion
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Impersonate a client after authentication" user right allows a program to impersonate another user or account to run on their behalf. An attacker could potentially use this to elevate privileges.
Check Content
Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any groups or accounts other than the following are granted the "Impersonate a client after authentication" user right, this is a finding: Administrators LOCAL SERVICE NETWORK SERVICE SERVICE
Fix Text
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Impersonate a client after authentication" to only include the following groups or accounts: Administrators LOCAL SERVICE NETWORK SERVICE SERVICE
Additional Identifiers
Rule ID: SV-253498r877392_rule
Vulnerability ID: V-253498
Group Title: SRG-OS-000324-GPOS-00125
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-002205 |
The information system uniquely identifies and authenticates source by organization, system, application, and/or individual for information transfer. |
| CCI-002235 |
The information system prevents non-privileged users from executing privileged functions to include disabling, circumventing, or altering implemented security safeguards/countermeasures. |