# 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

- Skill name: `cis-docker-3.24`
- Category: [DevOps & Security](https://www.openparable.com/skill/devops-security/1)
- Source: 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
- Repository: CyberStrikeus/CyberStrike (1,211 GitHub stars when collected)

## SKILL.md

# 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

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

## Remediation

You should execute the command below.

```bash
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. | ●    | ●    | ●    |

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Source: https://www.openparable.com/skill/devops-security/cis-docker-3-24 (OpenParable). Cite the canonical URL above.