The SUSE operating system must disable the x86 Ctrl-Alt-Delete key sequence.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-234988	SLES-15-040060	SV-234988r991589_rule		High

Description
A locally logged-on user, who presses Ctrl-Alt-Delete when at the console, can reboot the system. If accidentally pressed, as could happen in the case of a mixed OS environment, this can create the risk of short-term loss of availability of systems due to unintentional reboot. In the graphical user interface environment, risk of unintentional reboot from the Ctrl-Alt-Delete sequence is reduced because the user will be prompted before any action is taken.

Description

A locally logged-on user, who presses Ctrl-Alt-Delete when at the console, can reboot the system. If accidentally pressed, as could happen in the case of a mixed OS environment, this can create the risk of short-term loss of availability of systems due to unintentional reboot. In the graphical user interface environment, risk of unintentional reboot from the Ctrl-Alt-Delete sequence is reduced because the user will be prompted before any action is taken.

STIG	Date
SUSE Linux Enterprise Server 15 Security Technical Implementation Guide	2024-05-30

Details

Check Text ( C-38176r619233_chk )
Verify the SUSE operating system is not configured to reboot the system when Ctrl-Alt-Delete is pressed. Check that the ctrl-alt-del.target is masked with the following command: > systemctl status ctrl-alt-del.target ctrl-alt-del.target Loaded: masked (/dev/null; maksed) Active: inactive (dead) If the ctrl-alt-del.target is not masked, this is a finding.

Fix Text (F-38139r619234_fix)
Configure the system to disable the Ctrl-Alt-Delete sequence for the command line with the following commands: > sudo systemctl disable ctrl-alt-del.target > sudo systemctl mask ctrl-alt-del.target And reload the daemon to take effect > sudo systemctl daemon-reload