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cis-ubuntu1204-v110-5-1-4

DevOps & Security
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Ensure talk server is not enabled

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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_12.04_LTS_Server_Benchmark_v1.1.0/cis-ubuntu1204-v110-5-1-4/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-v110-5-1-4/. Do not write files or run scripts until I approve.

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5.1.4 Ensure talk server is not enabled (Scored)

Profile Applicability

  • Level 1

Description

The talk software makes it possible for users to send and receive messages across systems through a terminal session. The talk client (allows initiate of talk sessions) is installed by default.

Rationale

The software presents a security risk as it uses unencrypted protocols for communication.

Audit Procedure

Using Command Line

Ensure the talk services are not enabled:

grep ^talk /etc/inetd.conf
grep ^ntalk /etc/inetd.conf

Expected Result

No results should be returned.

Remediation

Using Command Line

Remove or comment out any talk or ntalk lines in /etc/inetd.conf:

sed -i 's/^talk/#talk/' /etc/inetd.conf
sed -i 's/^ntalk/#ntalk/' /etc/inetd.conf

Default Value

Not enabled by default on Ubuntu 12.04 LTS Server.

References

  • CIS Ubuntu 12.04 LTS Server Benchmark v1.1.0

Profile

Level 1 - Scored