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cis-ubuntu1204-v110-5-1-7

DevOps & Security
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Ensure tftp-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-v110-5-1-7/SKILL.md

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5.1.7 Ensure tftp-server is not enabled (Scored)

Profile Applicability

  • Level 1

Description

Trivial File Transfer Protocol (TFTP) is a simple file transfer protocol, typically used to automatically transfer configuration or boot machines from a boot server. The packages tftp and atftp are both used to define and support a TFTP server.

Rationale

TFTP does not support authentication nor does it ensure the confidentiality or integrity of data. It is recommended that TFTP be removed, unless there is a specific need for TFTP. In that case, extreme caution must be used when configuring the services.

Audit Procedure

Using Command Line

Ensure the tftp service is not enabled:

grep ^tftp /etc/inetd.conf

Expected Result

No results should be returned.

Remediation

Using Command Line

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

sed -i 's/^tftp/#tftp/' /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