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cis-ubuntu1204-v110-7-4-3

DevOps & Security
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Verify Permissions on /etc/hosts.allow

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Prompt to paste
I want to install this Agent Skill for this project in Codex.

Source SKILL.md: https://github.com/CyberStrikeus/CyberStrike/blob/HEAD/.cyberstrike/skill/CIS_benchmarks/Operating_Systems/Ubuntu/CIS_Ubuntu_12.04_LTS_Server_Benchmark_v1.1.0/cis-ubuntu1204-v110-7-4-3/SKILL.md

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First, summarize what it does, its dependencies, license status if identifiable, and any risks. Show the exact files you propose to add under .agents/skills/cis-ubuntu1204-v110-7-4-3/. Do not write files or run scripts until I approve.

After I approve, install the complete skill folder, including required referenced files, into that project location. Verify it is discoverable, then tell me its actual invocation name and how to use it. Do not claim it is installed until you have verified it.

Copying this prompt does not install or run the skill. Review third-party files before use. Codex skill guide

7.4.3 Verify Permissions on /etc/hosts.allow (Scored)

Profile Applicability

  • Level 1

Description

The /etc/hosts.allow file contains networking information that is used by many applications and therefore must be readable for these applications to operate.

Rationale

It is critical to ensure that the /etc/hosts.allow file is protected from unauthorized write access. Although it is protected by default, the file permissions could be changed either inadvertently or through malicious actions.

Audit Procedure

Using Command Line

Run the following command to determine the permissions on the /etc/hosts.allow file.

/bin/ls -l /etc/hosts.allow

Expected Result

-rw-r--r-- 1 root root 2055 Jan 30 16:30 /etc/hosts.allow

Remediation

Using Command Line

If the permissions of the /etc/hosts.allow file are incorrect, run the following command to correct them:

/bin/chmod 644 /etc/hosts.allow

Default Value

Permissions are 644 by default.

References

  • CIS Ubuntu 12.04 LTS Server Benchmark v1.1.0

Profile

Level 1 - Scored