TMA-CHROME-2.17

Ensure 'Proxy settings' is set to 'Enabled' and does not contain "ProxyMode": "auto_detect"

MediaNivel 1Automatizadachrome

Descripción

Google Chrome offers the functionality to configure the proxy settings by automatic discovery using WPAD (Web Proxy Auto-Discovery Protocol). Setting this configures the proxy settings for Chrome and ARC-apps, which ignore all proxy-related options specified from the command line. Disabled (0): Lets users choose their proxy settings. Rationale: Attackers may abuse the WPAD auto-config functionality to supply computers with a PAC file that specifies a rogue web proxy under their control. Compliant when the proxy policy is configured (ProxyMode or ProxySettings under HKLM\SOFTWARE\Policies\Google\Chrome) and neither selects auto_detect.

Cómo se verifica

Método de auditoría: Registro de Windows

registry

$v = (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google\Chrome' -Name 'ProxyMode' -ErrorAction SilentlyContinue).'ProxyMode'; $m = $v; $v = (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google\Chrome' -Name 'ProxySettings' -ErrorAction SilentlyContinue).'ProxySettings'; if ($null -eq $m -and $null -eq $v) { 'unset' } elseif ("$m" -eq 'auto_detect' -or "$v" -match 'auto_detect') { 'non-compliant: auto_detect' } else { 'compliant' }

Salida esperada: compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

Configure through Group Policy: Computer Configuration\Polices\Administrative Templates\Google\Google Chrome\Proxy settings with a ProxyMode other than auto_detect.

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: chromebrowsercis-l1
Referencia: CIS Google Chrome Benchmark v3.0.0 - 2.17 Ensure 'Proxy settings' is set to 'Enabled' and does not contain "ProxyMode": "auto_detect"

Verificar este host

Ejecute esto en un equipo que tenga permiso para auditar. El escaneo es de solo lectura.

shell

tmaegis scan --target chrome