TMA-COS-1.1.3
Ensure nodev option set on /tmp partition
MediaNivel 1Automatizadacos
Descripción
The nodev mount option specifies that the filesystem cannot contain special devices. Since the /tmp filesystem is not intended to support devices, set this option to ensure that users cannot attempt to create block or character special devices in /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 -- nodev; then echo compliant; else echo /tmp' is mounted without nodev'; 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,nodev /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 - 1.1.3 Ensure nodev 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