Vulnerability Discussion

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.

Check

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 "Modify firmware environment values" user right, this is a finding:

Administrators

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 groups or accounts:

Administrators