Unauthorized accounts must not have the Modify firmware environment values user right.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-26498	WN08-UR-000034	SV-48520r2_rule	ECLP-1	Medium

Description
Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Modify firmware environment values" user right can change hardware configuration environment variables. This could result in hardware failures or a DoS.

STIG	Date
Windows 8/8.1 Security Technical Implementation Guide	2017-05-17

Details

Check Text ( C-45170r1_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 "Modify firmware environment values" user right, this is a finding: Administrators

Check Text ( C-45170r1_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 "Modify firmware environment values" user right, this is a finding:

Administrators

Fix Text (F-41642r1_fix)
Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> User Rights Assignment -> "Modify firmware environment values" to only include the following accounts or groups: Administrators