Ensure noexec option set on /tmp partition

MoyenneNiveau 1Automatiséecos

Description

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 .

Méthode de vérification

Méthode d'audit: Commande 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

Sortie attendue: compliant

Méthode de correction

Méthode de correction: Recommandation ou correctif d'infrastructure

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.

Propriétés

Systèmes d'exploitation: Tous
Étiquettes: container-optimized-oscos
Référence: CIS Google Container-Optimized OS Benchmark v1.2.0 - 1.1.5 Ensure noexec option set on /tmp partition

Vérifier cet hôte

Exécutez cette commande sur une machine que vous êtes autorisé à auditer. L'analyse est en lecture seule.

shell

tmaegis scan --target cos