# Cis Ubuntu2004 V300 1 3 1 4

> Ensure all AppArmor Profiles are enforcing

- Skill: `cyberstrikeus/cis-ubuntu2004-v300-1-3-1-4` (Agent Skill)
- Install (CLI): `npx skillmds@latest add cyberstrikeus/cis-ubuntu2004-v300-1-3-1-4`
- Raw SKILL.md: https://api.skillmd.com/api/skills/cyberstrikeus/cis-ubuntu2004-v300-1-3-1-4/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: cyberstrikeus (https://skillmd.com/u/cyberstrikeus)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/cyberstrikeus/cis-ubuntu2004-v300-1-3-1-4

---


# 1.3.1.4 Ensure all AppArmor Profiles are enforcing (Automated)

## Profile

- Level 2 - Server
- Level 2 - Workstation

## Description

AppArmor profiles define what resources applications are able to access.

## Rationale

Security configuration requirements vary from site to site. Some sites may mandate a policy that is stricter than the default policy, which is perfectly acceptable. This item is intended to ensure that any policies that exist on the system are activated.

## Audit Procedure

### Command Line

Run the following commands and verify that profiles are loaded and are not in complain mode:

```bash
# apparmor_status | grep profiles
```

Review output and ensure that profiles are loaded, and in enforce mode:

```
34 profiles are loaded.
34 profiles are in enforce mode.
0 profiles are in complain mode.
2 processes have profiles defined.
```

Run the following command and verify that no processes are unconfined:

```bash
apparmor_status | grep processes
```

Review the output and ensure no processes are unconfined:

```
2 processes have profiles defined.
2 processes are in enforce mode.
0 processes are in complain mode.
0 processes are unconfined but have a profile defined.
```

## Expected Result

- All profiles should be in enforce mode with 0 profiles in complain mode
- No processes should be unconfined

## Remediation

### Command Line

Run the following command to set all profiles to enforce mode:

```bash
# aa-enforce /etc/apparmor.d/*
```

Note: Any unconfined processes may need to have a profile created or activated for them and then be restarted.

## References

1. NIST SP 800-53 Rev. 5: AC-3

## CIS Controls

| Controls Version | Control                                               | IG 1 | IG 2 | IG 3 |
| ---------------- | ----------------------------------------------------- | ---- | ---- | ---- |
| v8               | 3.3 Configure Data Access Control Lists               | \*   | \*   | \*   |
| v7               | 14.6 Protect Information through Access Control Lists | \*   | \*   | \*   |

MITRE ATT&CK Mappings: T1068, T1068.000, T1565, T1565.001, T1565.003 | TA0005 | M1048