Ensure noexec option set on /tmp partition

MediaNivel 1Automatizadacos

Descripción

The noexec mount option specifies that the filesystem cannot contain executable binaries. Since the /tmp filesystem is only intended for temporary file storage, set this option to ensure that users cannot run executable binaries from /tmp .

Cómo se verifica

Método de auditoría: Comando de shell

shell

if ! findmnt -kn /tmp >/dev/null 2>&1; then echo compliant; elif findmnt -kn /tmp | grep -qw -- noexec; then echo compliant; else echo /tmp' is mounted without noexec'; fi

Salida esperada: compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

Run the following command to remount /tmp : # mount -o remount,noexec /tmp /etc is stateless on Container-Optimized OS. Therefore, /etc cannot be used to make these changes persistent across reboots. The steps mentioned above needs to be performed after every boot.

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: container-optimized-oscos
Referencia: CIS Google Container-Optimized OS Benchmark v1.2.0 - 1.1.5 Ensure noexec option set on /tmp partition

Verificar este host

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

shell

tmaegis scan --target cos