Cis Docker 3.9
DevOps & Securitycis-docker-3.9Cis Docker 3.9 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 TLS CA certificate file ownership is set to root:root
How to use this skill
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Inspect the Agent Skill at https://github.com/CyberStrikeus/CyberStrike/blob/HEAD/.cyberstrike/skill/CIS_benchmarks/Server_Software/Docker/CIS_Docker_Benchmark_v1.8.0/cis-docker-3.9/SKILL.md and all supporting files. Report provenance, permissions, scripts, dependencies, and security risks. Propose an exact installation into .agents/skills/cis-docker-3-9, but wait for my approval before writing files or running scripts.
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Ensure that TLS CA certificate file ownership is set to root:root (Manual)
Profile Applicability
- Level 1 - Docker - Linux
Description
You should verify that the TLS CA certificate file (the file that is passed along with the --tlscacert parameter) is individually owned and group owned by root.
Rationale
The TLS CA certificate file should be protected from any tampering. It is used to authenticate the Docker server based on a given CA certificate. It must be therefore be individually owned and group owned by root to ensure that it cannot be modified by less privileged users.
Impact
None.
Audit Procedure
You should execute the command below to verify that the TLS CA certificate file is owned and group owned by root:
stat -c %U:%G <path to TLS CA certificate file> | grep -v root:root
The above command should return no results.
Remediation
You should execute the following command:
chown root:root <path to TLS CA certificate file>
This sets the individual ownership and group ownership for the TLS CA certificate file to root.
Default Value
By default, the ownership and group-ownership for TLS CA certificate file is correctly set to root.
References
CIS Controls
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|---|---|---|---|
| v8 | 5.4 Restrict Administrator Privileges to Dedicated Administrator Accounts - Restrict 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 Privileges - Controlled Use of Administrative Privileges |