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CIS Ubuntu 14.04 LTS - 5.5 Ensure root login is restricted to system console

DevOps & Security
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Verify root login is restricted to physically secure system consoles via /etc/securetty

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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_Linux_14.04_LTS_Benchmark_v2.1.0/cis-ubuntu1404-v210-5-5/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-ubuntu-14-04-lts-5-5-ensure-root-login-is-restricted-to-system-console/. Do not write files or run scripts until I approve.

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

5.5 Ensure root login is restricted to system console (Not Scored)

Profile Applicability

  • Level 1 - Server
  • Level 1 - Workstation

Description

The file /etc/securetty contains a list of valid terminals that may be logged in directly as root.

Rationale

Since the system console has special properties to handle emergency situations, it is important to ensure that the console is in a physically secure location and that unauthorized consoles have not been defined.

Audit Procedure

cat /etc/securetty

Expected Result

Review the output and verify only physically secure consoles are listed.

Remediation

Remove entries for any consoles that are not in a physically secure location.

Default Value

Varies by installation.

References

  • CIS Controls: 5.1 - Minimize And Sparingly Use Administrative Privileges

Profile

  • Level 1 - Server
  • Level 1 - Workstation