TMA-DOCKER-5.6

Ensure sensitive host system directories are not mounted on containers

ÉlevéeNiveau 1Automatiséedocker

Description

Mounting host system directories (/, /boot, /dev, /etc, /lib, /proc, /sys, /usr) lets a container read or change the host. Flags those directories mounted in any mode, and anything below them mounted read-write. The audit inspects every running container (docker ps -q) and prints the offending names; a host with no running containers is compliant.

Méthode de vérification

Méthode d'audit: Commande shell

shell

ids=$(docker ps -q) || exit 1; [ -z "$ids" ] && { echo compliant; exit 0; }; out=$(docker inspect --format '{{.Name}} {{range .Mounts}} {{.Source}}|{{.RW}}{{end}}' $ids) || exit 1; bad=$(printf '%s\n' "$out" | awk '{for(i=2;i<=NF;i++){split($i,a,"|"); if(a[1] ~ /^\/(boot|dev|etc|lib|proc|sys|usr)?$/ || (a[2]=="true" && a[1] ~ /^\/(boot|dev|etc|lib|proc|sys|usr)\//)) print $1" "a[1]}}'); [ -z "$bad" ] && echo compliant || printf '%s\n' "$bad"

Sortie attendue: compliant

Méthode de correction

Méthode de correction: Recommandation ou correctif d'infrastructure

Redeploy the container without bind mounts of sensitive host directories; if a file is truly needed, mount only that file read-only (-v /etc/foo:/etc/foo:ro).

Propriétés

Systèmes d'exploitation: Tous
Étiquettes: dockerruntime
Référence: CIS Docker Benchmark v1.9.0 - 5.6 Ensure sensitive host system directories are not mounted on containers

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 docker