Cis Docker 5.23
DevOps & Securitycis-docker-5.23Cis Docker 5.23 is an Agent Skill for devops & security published in the CyberStrikeus/CyberStrike repository on GitHub: a SKILL.md instruction file an AI agent can load to do this task.
Ensure that docker exec commands are not used with the privileged option
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5.23 Ensure that docker exec commands are not used with the privileged option (Manual)
Profile Applicability
- Level 2 - Docker - Linux
Description
You should not use docker exec with the --privileged option.
Rationale
Using the --privileged option in docker exec commands gives extended Linux capabilities to the command. This could potentially be an insecure practice, particularly when you are running containers with reduced capabilities or with enhanced restrictions.
Impact
If you need enhanced capabilities within a container, then run it with all the permissions it requires. These should be specified individually.
Audit Procedure
If you have auditing enabled as recommended in Section 1, you can use the command below to filter out docker exec commands that use the --privileged option.
ausearch -k docker | grep exec | grep privileged
Remediation
You should not use the --privileged option in docker exec commands.
Default Value
By default, the docker exec command runs without the --privileged option.
References
- https://docs.docker.com/engine/reference/commandline/exec/
- https://docs.docker.com/engine/reference/run/#runtime-privilege-and-linux-capabilities
CIS Controls
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|---|---|---|---|
| v8 | 5.4 Restrict Administrator Privileges to Dedicated Administrator AccountsRestrict administrator privileges to dedicated administrator accounts on enterprise assets. Conduct general computing activities, such as internet browsing, email, and productivity suite use, from the user's primary, non-privileged account. | ● | ● | ● |
| v7 | 4 Controlled Use of Administrative PrivilegesControlled Use of Administrative Privileges |