RHEL 10 must disable the systemd Ctrl-Alt-Delete burst key sequence.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| high | V-281298 | SRG-OS-000324-GPOS-00125 | RHEL-10-700950 | SV-281298r1166846_rule | 2026-03-11 | 1 |
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 operating system 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.
ℹ️ Check
Verify RHEL 10 is configured to not reboot the system when Ctrl-Alt-Delete is pressed seven times within two seconds with the following command:
$ grep -iR CtrlAltDelBurstAction /etc/systemd/
/etc/systemd/system.conf:CtrlAltDelBurstAction=none
If the "CtrlAltDelBurstAction" is not set to "none", is commented out, or is missing, this is a finding.
✔️ Fix
Configure RHEL 10 to disable the "CtrlAltDelBurstAction".
Update the "/etc/systemd/system.conf" configuration file as follows:
$ sudo vi /etc/systemd/system.conf
CtrlAltDelBurstAction=none
Reload the daemon for this change to take effect:
$ sudo systemctl daemon-reload