OL 9 must be configured so that the x86 Ctrl-Alt-Delete key sequence is disabled.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-271752 | OL09-00-002413 | SV-271752r1091968_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 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. |
| STIG | Date |
| Oracle Linux 9 Security Technical Implementation Guide | 2025-05-08 |
Details
| Check Text (C-75802r1091966_chk) |
| Verify that OL 9 is not configured to reboot the system when Ctrl-Alt-Delete is pressed with the following command: $ systemctl status ctrl-alt-del.target 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 (F-75709r1091967_fix) |
| Configure OL 9 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 |