cis-ubuntu1204-v110-5-1-7

name	cis-ubuntu1204-v110-5-1-7
description	Ensure tftp-server is not enabled
category	cis-os-hardening
version	1.1.0
author	cyberstrike-official
tags	["cis","ubuntu",12.04,"linux","tftp","legacy-services","inetd"]
cis_id	5.1.7
cis_benchmark	CIS Ubuntu 12.04 LTS Server Benchmark v1.1.0
tech_stack	["ubuntu","linux"]
cwe_ids	[]
chains_with	[]
prerequisites	[]
severity_boost	{}

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