The Oracle Linux operating system must be configured so that the x86 Ctrl-Alt-Delete key sequence is disabled on the command line.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-221717 | OL07-00-020230 | SV-221717r991589_rule | CCI-000366 | 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 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 7 Security Technical Implementation Guide | 2025-05-08 | |||
Details
Check Text (C-221717r991589_chk)
Verify the operating system is not configured to reboot the system when Ctrl-Alt-Delete is pressed.
Check that the ctrl-alt-del.target is masked and not active with the following command:
# systemctl status ctrl-alt-del.target
ctrl-alt-del.target
Loaded: masked (/dev/null; bad)
Active: inactive (dead)
If the ctrl-alt-del.target is not masked, this is a finding.
If the ctrl-alt-del.target is active, this is a finding.
Fix Text (F-36240r928539_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