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← Back to Red Hat Enterprise Linux 10 Security Technical Implementation Guide

V-281299

CAT I (High)

RHEL 10 must disable the x86 Ctrl-Alt-Delete key sequence.

Rule ID

SV-281299r1166849_rule

STIG

Red Hat Enterprise Linux 10 Security Technical Implementation Guide

Version

V1R1

CCIs

CCI-002235

Discussion

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 operating system environment, this can create the risk of short-term loss of systems availability due to unintentional reboot. In a graphical user environment, risk of unintentional reboot from the Ctrl-Alt-Delete sequence is reduced because the user will be prompted before any action is taken.

Check Content

Verify RHEL 10 is not configured to reboot the system when Ctrl-Alt-Delete is pressed with the following command:

$ sudo systemctl status ctrl-alt-del.target
o ctrl-alt-del.target
        Loaded: masked (Reason: Unit ctrl-alt-del.target is masked.)
        Active: inactive (dead)

If the "ctrl-alt-del.target" is loaded and not masked, this is a finding.

Fix Text

Configure RHEL 10 to disable the "ctrl-alt-del.target" with the following command:

$ sudo systemctl disable --now ctrl-alt-del.target
$ sudo systemctl mask --now ctrl-alt-del.target