Ensure that the container's root filesystem is mounted as read only

MediaNivel 1Automatizadadocker

Descripción

A read-only root filesystem stops attackers from modifying the container's binaries and configuration at runtime. The audit inspects every running container (docker ps -q) and prints the offending names; a host with no running containers is compliant.

Cómo se verifica

Método de auditoría: Comando de shell

shell

ids=$(docker ps -q) || exit 1; [ -z "$ids" ] && { echo compliant; exit 0; }; out=$(docker inspect --format '{{.Name}} {{.HostConfig.ReadonlyRootfs}}' $ids) || exit 1; bad=$(printf '%s\n' "$out" | awk '$2!="true"{print $1}'); [ -z "$bad" ] && echo compliant || printf '%s\n' "$bad"

Salida esperada: compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

Redeploy with --read-only (compose: 'read_only: true') and use volumes or --tmpfs for directories that must be writable.

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: dockerruntime
Referencia: CIS Docker Benchmark v1.9.0 - 5.13 Ensure that the container's root filesystem is mounted as read only

Verificar este host

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

shell

tmaegis scan --target docker