Ensure auditing is configured for Docker files and directories - docker.sock

MediumLevel 2Automateddocker

Description

Auditing the Docker socket /var/run/docker.sock records changes and use of a security-critical Docker component, supporting incident investigation. The audit lists the loaded kernel audit rules (auditctl -l, needs root) and looks for a watch on docker.sock. Not applicable when the Docker socket /var/run/docker.sock is not present.

How it is checked

Audit method: Shell command

shell

out=$(auditctl -l 2>/dev/null) || exit 1; printf '%s\n' "$out" | grep -q -e 'docker.sock' && echo compliant || echo missing

Expected output: compliant

How it is fixed

Fix method: Guidance or infrastructure patch

Add '-w /var/run/docker.sock -k docker' to /etc/audit/rules.d/docker.rules, then load it with 'augenrules --load' (or restart auditd).

Properties

Operating systems: Any
Tags: dockerauditdhost
Reference: CIS Docker Benchmark v1.9.0 - 1.1.9 Ensure auditing is configured for Docker files and directories - docker.sock

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