TMA-IIS-4.9

Ensure 'notListedIsapisAllowed' is set to false

AltaNivel 1Automatizadaiis

Descripción

The notListedIsapisAllowed attribute is a server-level setting that is located in the ApplicationHost.config file in the <isapiCgiRestriction> element of the <system.webServer> section under <security>. This element ensures that malicious users cannot copy unauthorized ISAPI binaries to the Web server and then run them. It is recommended that notListedIsapisAllowed be set to false. isapiCgiRestriction notListedIsapisAllowed must be false. PowerShell 5.1 with the WebAdministration module; run elevated.

Cómo se verifica

Método de auditoría: Comando de shell

shell

Import-Module WebAdministration -ErrorAction Stop; $c = Get-WebConfiguration -Filter 'system.webServer/security/isapiCgiRestriction' -PSPath 'MACHINE/WEBROOT/APPHOST'; if ($c.notListedIsapisAllowed -eq $false) { 'compliant' } else { 'noncompliant' }

Salida esperada: compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

Set-WebConfigurationProperty -PSPath 'MACHINE/WEBROOT/APPHOST' -Filter system.webServer/security/isapiCgiRestriction -Name notListedIsapisAllowed -Value False

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: iisrequest-filtering
Referencia: CIS Microsoft IIS 10 Benchmark v1.2.1 - 4.9 Ensure 'notListedIsapisAllowed' is set to false

Verificar este host

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

shell

tmaegis scan --target iis