RHEL-08-040172 - The systemd Ctrl-Alt-Delete burst key sequence in RHEL 8 must be disabled.

Information

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.

Solution

Configure RHEL 8 to disable the CtrlAltDelBurstAction by adding it to a drop file in a "/etc/systemd/system.conf.d/" configuration file:

If no drop file exists, create one with the following command:

$ sudo mkdir -p /etc/systemd/system.conf.d && sudo vi /etc/systemd/system.conf.d/55-CtrlAltDel-BurstAction

Edit the file to contain the setting by adding the following text:

CtrlAltDelBurstAction=none

Reload the daemon for this change to take effect.

$ sudo systemctl daemon-reload

Item Details

Audit Name: DISA Red Hat Enterprise Linux 8 STIG v2r7

Category: CONFIGURATION MANAGEMENT

Plugin: Unix

Control ID: d51e5f0618d5157352d360673adcb2fc518e9e127345a78a363a985c87b95992

Detections

Analytics

RHEL-08-040172 - The systemd Ctrl-Alt-Delete burst key sequence in RHEL 8 must be disabled.

Information

Solution

See Also

Item Details