Ensure that authorization for Docker client commands is enabled

MediumLevel 2Automateddocker

Description

An authorization plugin gives granular control over which Docker API commands each client may run. Compliant when --authorization-plugin or a non-empty "authorization-plugins" list is configured. The audit reads the running dockerd command line (ps) together with /etc/docker/daemon.json.

How it is checked

Audit method: Shell command

shell

args=$(ps -eo args 2>/dev/null) || exit 1; s=$(printf '%s\n' "$args" | grep '[d]ockerd'; cat /etc/docker/daemon.json 2>/dev/null); printf '%s\n' "$s" | grep -Eq -e '--authorization-plugin|"authorization-plugins"[[:space:]]*:[[:space:]]*\[[[:space:]]*("|$)' && echo compliant || echo missing

Expected output: compliant

How it is fixed

Fix method: Guidance or infrastructure patch

Install an authorization plugin and add it to "authorization-plugins" in /etc/docker/daemon.json (or --authorization-plugin=<PLUGIN>), then restart the Docker daemon.

Properties

Operating systems: Any
Tags: dockerdaemon
Reference: CIS Docker Benchmark v1.9.0 - 2.13 Ensure that authorization for Docker client commands is enabled

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

shell

tmaegis scan --target docker --level 2