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


Overview

Finding ID Version Rule ID IA Controls Severity
V-26490 WN12-UR-000025 SV-52117r2_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 Server 2012/2012 R2 Member Server Security Technical Implementation Guide 2017-06-09

Details

Check Text ( C-46934r1_chk )
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 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-45142r1_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