Unauthorized accounts must not have the Increase scheduling priority user right.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
WN12-UR-000027	WN12-UR-000027	WN12-UR-000027_rule		Medium

Description
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Increase scheduling priority" user right can change a scheduling priority causing performance issues or a DoS.

STIG	Date
Microsoft Windows Server 2012 Domain Controller Security Technical Implementation Guide	2013-07-25

Details

Check Text ( C-WN12-UR-000027_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 "Increase scheduling priority" user right, this is a finding: Administrators Severity Override: If an application requires this user right, this can be downgraded to not a finding if the following conditions are met: Vendor documentation must support the requirement for having the user right. The requirement must be documented with the IAO. The application account must meet requirements for application account passwords, such as length (V-36661) and required changes frequency (V-36662).

Check Text ( C-WN12-UR-000027_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 "Increase scheduling priority" user right, this is a finding:

Administrators

Severity Override: If an application requires this user right, this can be downgraded to not a finding if the following conditions are met:
Vendor documentation must support the requirement for having the user right.
The requirement must be documented with the IAO.
The application account must meet requirements for application account passwords, such as length (V-36661) and required changes frequency (V-36662).

Fix Text (F-WN12-UR-000027_fix)
Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> User Rights Assignment -> "Increase scheduling priority" to only include the following accounts or groups: Administrators