Unauthorized accounts must not have the "Impersonate a client after authentication" user right.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
WN08-UR-000025	WN08-UR-000025	WN08-UR-000025_rule		Medium

Description
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.

STIG	Date
Windows 8 Security Technical Implementation Guide	2012-11-21

Details

Check Text ( C-WN08-UR-000025_chk )
Analyze the system using the Security Configuration and Analysis snap-in. (See "Performing Analysis with the Security Configuration and Analysis Snap-in" in the STIG Overview document.) Expand the Security Configuration and Analysis tree view. Navigate to Local Policies -> User Rights Assignment. If any accounts or groups other than the following are granted the "Impersonate a client after authentication" user right, this is a finding: Administrators Service Local Service Network Service

Check Text ( C-WN08-UR-000025_chk )

Analyze the system using the Security Configuration and Analysis snap-in. (See "Performing Analysis with the Security Configuration and Analysis Snap-in" in the STIG Overview document.)
Expand the Security Configuration and Analysis tree view.
Navigate to Local Policies -> User Rights Assignment.

If any accounts or groups other than the following are granted the "Impersonate a client after authentication" user right, this is a finding:

Administrators
Service
Local Service
Network Service

Fix Text (F-WN08-UR-000025_fix)
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 accounts or groups: Administrators Service Local Service Network Service