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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-52117r1_rule ECLP-1 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 Member Server Security Technical Implementation Guide 2014-01-07

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