The x86 Ctrl-Alt-Delete key sequence must be disabled on OL 8.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| high | V-248869 | SRG-OS-000480-GPOS-00227 | OL08-00-040170 | SV-248869r991589_rule | 2025-02-20 | 2 |
| 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 system 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. |
| ℹ️ Check |
|---|
| Verify OL 8 is not configured to reboot the system when Ctrl-Alt-Delete is pressed with the following command: $ sudo systemctl status ctrl-alt-del.target | grep Loaded: Loaded: masked (Reason: Unit ctrl-alt-del.target is masked.) If the "ctrl-alt-del.target" Loaded: value is not set to "masked", this is a finding. |
| ✔️ 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 Created symlink /etc/systemd/system/ctrl-alt-del.target -> /dev/null Reload the daemon to take effect: $ sudo systemctl daemon-reload |