Cis Docker 3.24

DevOps & Security

cis-docker-3.24

Cis Docker 3.24 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 the Containerd socket file permissions are set to 660 or more restrictively

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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-3.24/SKILL.md and all supporting files. Report provenance, permissions, scripts, dependencies, and security risks. Propose an exact installation into .agents/skills/cis-docker-3-24, but wait for my approval before writing files or running scripts.

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Ensure that the Containerd socket file permissions are set to 660 or more restrictively (Automated)

Profile Applicability

Level 1 - Docker - Linux

Description

You should verify that the Containerd socket file has permissions of 660 or are configured more restrictively.

Rationale

Only root and the members of the root group should be allowed to read and write to the default Containerd Unix socket. The Containerd socket file should therefore have permissions of 660 or more restrictive permissions.

Impact

None.

Audit Procedure

You should execute the command below to verify that the Docker socket file has permissions of 660 or more restrictive permissions

stat -c %a /run/containerd/containerd.sock

Remediation

You should execute the command below.

chmod 660 /run/containerd/containerd.sock

This sets the file permissions of the Containerd socket file to 660.

Default Value

By default, the permissions for the Containerd socket file is correctly set to 660.

References

None specified in benchmark.

CIS Controls

Controls Version	Control	IG 1	IG 2	IG 3
v8	3.3 Configure Data Access Control Lists - Configure data access control lists based on a user's need to know. Apply data access control lists, also known as access permissions, to local and remote file systems, databases, and applications.	●	●	●