The Ctrl-Alt-Delete key sequence must be disabled on AlmaLinux OS 9.
An XCCDF Rule
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.
- ID
- SV-269141r1050023_rule
- Version
- ALMA-09-006730
- Severity
- High
- References
- Updated
Remediation Templates
A Manual Procedure
Configure AlmaLinux OS 9 to disable the ctrl-alt-del.target with the following command:
$ systemctl disable --now reboot.target
$ systemctl mask --now reboot.target