Ensure 'Impersonate a client after authentication' is set to 'Administrators, LOCAL SERVICE, NETWORK SERVICE, SERVICE'

AltaNível 1Automatizadawindows

Descrição

The policy setting allows programs that run on behalf of a user to impersonate that user (or another specified account) so that they can act on behalf of the user. If this user right is required for this kind of impersonation, an unauthorized user will not be able to convince a client to connect—for example, by remote procedure call (RPC) or named pipes—to a service that they have created to impersonate that client, which could elevate the unauthorized user's permissions to administrative or system levels. Services that are started by the Service Control Manager have the built-in Service group

Como é verificado

Método de auditoria: Comando shell

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*SeImpersonatePrivilege\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-1-5-19,S-1-5-20,S-1-5-32-544,S-1-5-6') { 'compliant' } else { 'non-compliant: ' + ($have -join ',') }

Saída esperada: compliant

Como é corrigido

Método de correção: Orientação ou patch de infraestrutura

Set through Group Policy (domain policy for domain members): Computer Configuration\Policies\Windows Settings\Security Settings\Local Policies\User Rights Assignment\Impersonate a client after authentication

Propriedades

Sistemas operacionais: windows-10
Tags: cis-convertedseceditwindows
Referência: CIS Microsoft Windows 10 Enterprise Benchmark v4.0.0 - 2.2.24

Verificar este host

Execute isto em uma máquina que você tenha permissão para auditar. A varredura é somente leitura.

shell

tmaegis scan --target windows