Ensure mount propagation mode is not set to shared

MediaNivel 1Automatizadadocker

Descripción

A shared (or rshared) mount propagates mount changes between the container and the host. Flags containers with any mount whose Propagation is shared or rshared. 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}}{{range .Mounts}} {{.Propagation}}{{end}}' $ids) || exit 1; bad=$(printf '%s\n' "$out" | awk '/ r?shared( |$)/ {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 without :shared/:rshared bind-mount propagation (use the default rprivate, or slave if required).

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: dockerruntime
Referencia: CIS Docker Benchmark v1.9.0 - 5.20 Ensure mount propagation mode is not set to shared

Verificar este host

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

shell

tmaegis scan --target docker