RHEL-09-211045 - The systemd Ctrl-Alt-Delete burst key sequence in RHEL 9 must be disabled.

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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.

Satisfies: SRG-OS-000324-GPOS-00125, SRG-OS-000480-GPOS-00227


Configure the system to disable the CtrlAltDelBurstAction by added or modifying the following line in the '/etc/systemd/system.conf' configuration file:


Reload the daemon for this change to take effect.

$ sudo systemctl daemon-reload

See Also


Item Details

References: CAT|I, CCI|CCI-000366, CCI|CCI-002235, Rule-ID|SV-257784r925339_rule, STIG-ID|RHEL-09-211045, Vuln-ID|V-257784

Plugin: Unix

Control ID: ddaf04419dcc81d061bcde28579710c5e602830a1b72e477186f0569f39ce9e6