Ensure that Docker's default bridge "docker0" is not used

NiskaNivo 2Automatskadocker

Opis

Containers on the default bridge (docker0) can reach each other without restriction and are exposed to ARP spoofing; user-defined networks should be used. Flags containers attached to the network named bridge. The audit inspects every running container (docker ps -q) and prints the offending names; a host with no running containers is compliant.

Kako se proverava

Metod provere: Komanda ljuske

shell

ids=$(docker ps -q) || exit 1; [ -z "$ids" ] && { echo compliant; exit 0; }; out=$(docker inspect --format '{{.Name}}{{range $n, $_ := .NetworkSettings.Networks}} {{$n}}{{end}}' $ids) || exit 1; bad=$(printf '%s\n' "$out" | awk '{for(i=2;i<=NF;i++) if($i=="bridge") {print $1; break}}'); [ -z "$bad" ] && echo compliant || printf '%s\n' "$bad"

Očekivani izlaz: compliant

Kako se ispravlja

Metod ispravke: Smernica ili zakrpa infrastrukture

Create user-defined networks (docker network create ...) and attach containers to them instead of the default bridge.

Svojstva

Operativni sistemi: Bilo koji
Oznake: dockerruntimenetwork
Referenca: CIS Docker Benchmark v1.9.0 - 5.30 Ensure that Docker's default bridge "docker0" is not used

Proverite ovaj računar

Pokrenite ovo na računaru za koji imate dozvolu za proveru. Skeniranje radi u režimu samo za čitanje.

shell

tmaegis scan --target docker --level 2