The Ubuntu operating system must not have the telnet package installed.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-238326	UBTU-20-010405	SV-238326r987796_rule		High

Description

Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are not encrypted, they can be plainly read (i.e., clear text) and easily compromised.

STIG	Date
Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide	2025-05-16

Details

Check Text (C-41536r654151_chk)

Verify that the telnet package is not installed on the Ubuntu operating system by running the following command:

$ dpkg -l | grep telnetd

If the package is installed, this is a finding.

Fix Text (F-41495r654152_fix)

Remove the telnet package from the Ubuntu operating system by running the following command:

$ sudo apt-get remove telnetd