Ensure 'Increase scheduling priority' is set to 'Administrators, Window Manager\Window Manager Group'

HighLevel 1Automatedwindows

Description

This policy setting determines whether users can increase the base priority class of a process. (It is not a privileged operation to increase relative priority within a priority class.) This user right is not required by administrative tools that are supplied with the operating system but might be required by software development tools. The recommended state for this setting is: Administrators, Window Manager\Window Manager Group.

How it is checked

Audit method: Shell command

shell

$f = Join-Path $env:TEMP ('tmaegis-' + [guid]::NewGuid().ToString() + '.inf'); secedit /export /cfg $f /areas SECURITYPOLICY USER_RIGHTS /quiet | Out-Null; $c = Get-Content $f -ErrorAction SilentlyContinue; Remove-Item $f -Force -ErrorAction SilentlyContinue; $line = $c | Where-Object { $_ -match '^\s*SeIncreaseBasePriorityPrivilege\s*=' } | Select-Object -First 1; $v = if ($line) { ($line -split '=', 2)[1].Trim().Trim('"') } else { $null }; $have = @(if ($v) { $v -split ',' | ForEach-Object { $_.Trim().TrimStart('*') } | Where-Object { $_ } }); if ((($have | Sort-Object -Unique) -join ',') -eq 'S-1-5-32-544,S-1-5-90-0') { 'compliant' } else { 'non-compliant: ' + ($have -join ',') }

Expected output: compliant

How it is fixed

Fix method: Guidance or infrastructure patch

Set through Group Policy (domain policy for domain members): Computer Configuration\Policies\Windows Settings\Security Settings\Local Policies\User Rights Assignment\Increase scheduling priority

Properties

Operating systems: windows-10
Tags: cis-convertedseceditwindows
Reference: CIS Microsoft Windows 10 Enterprise Benchmark v4.0.0 - 2.2.25

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

shell

tmaegis scan --target windows