Ensure 'Allow download restrictions' is set to 'Enabled: Block malicious downloads'

AltaNivel 1Automatizadaedge

Descripción

This policy setting controls whether Microsoft Edge blocks certain types of downloads, and prevents users from bypassing security warnings, depending on the classification of Safe Browsing. The recommended state for this setting is: Enabled: Block malicious downloads. Note: These restrictions only apply to downloads from web page content, as well as the 'download link...' context menu option. Rationale: Downloads could contain malware that has the potential to exfiltrate sensitive data or encrypt critical systems for ransom. Audit reads the Group Policy registry value and prints 'compliant', 'unset' (policy not configured, reported as FAIL) or the non-compliant value. Registry value: HKLM\SOFTWARE\Policies\Microsoft\Edge:DownloadRestrictions (REG_DWORD); compliant when it is 4. Remediation writes 4 locally; in a domain set it through the ADMX so Group Policy does not revert it.

Cómo se verifica

Método de auditoría: Registro de Windows

registry

$v = (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Edge' -Name 'DownloadRestrictions' -ErrorAction SilentlyContinue).'DownloadRestrictions'; if ($null -eq $v) { 'unset' } elseif (($null -ne $v -and @(4) -contains [int64]$v)) { 'compliant' } else { "non-compliant: $v" }

Salida esperada: compliant

Cómo se corrige

Método de corrección: Comando de shell

shell

$p = 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Edge'; if (-not (Test-Path -Path $p)) { New-Item -Path $p -Force | Out-Null }; New-ItemProperty -Path $p -Name 'DownloadRestrictions' -Value 4 -PropertyType DWord -Force | Out-Null

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: edgebrowsercis-l1
Referencia: CIS Microsoft Edge Benchmark v5.0.0 - 1.38 Ensure 'Allow download restrictions' is set to 'Enabled: Block malicious downloads'

Verificar este host

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

shell

tmaegis scan --target edge