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

STIG ID: WN11-UR-000110 |  SRG: SRG-OS-000324-GPOS-00125 |  Severity: medium |  CCI:  | Vulnerability Id: V-253498

Vulnerability 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

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

Fix

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