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RHEL-10-700960 RHEL 10 must disable the x86 Ctrl-Alt-Delete key sequence.

DISA STIG library V1R3
All changes in this version
first version loaded CAT I

Maps to AC-6(10) via CCI-002235

Title

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

Control

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.

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.

Related controls

CCI-002235

Fix

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