Ensure only trusted users are allowed to control Docker daemon

MediumLevel 1Manual reviewdocker

Description

The Docker daemon currently requires access to the Docker socket which is, by default, owned by the user root and the group docker. Docker allows you to share a directory between the Docker host and a guest container without limiting the access rights of the container. Reported as a manual review item: the audit needs a site-specific judgement.

How it is checked

Audit method: Manual review

This recommendation cannot be checked automatically. A scan lists it with these instructions when you pass --include-manual.

Execute the following command on the docker host and ensure that only trusted users are members of the docker group. getent group docker Expected state: You should remove any untrusted users from the docker group. Additionally, you should not create a mapping of sensitive directories from the host to container volumes.

How it is fixed

Fix method: Guidance or infrastructure patch

You should remove any untrusted users from the docker group. Additionally, you should not create a mapping of sensitive directories from the host to container volumes.

Properties

Operating systems: Any
Tags: dockermanual
Reference: CIS Docker Benchmark v1.9.0 - 1.1.2 Ensure only trusted users are allowed to control Docker daemon