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Linux RHEL-10-700950

DISA STIG RHEL-10-700950 (CAT I): RHEL 10 must disable the systemd Ctrl-Alt-Delete burst key sequence.

DISA STIG recommends

RHEL-10-700950 CAT I

RHEL 10 must disable the systemd Ctrl-Alt-Delete burst key sequence.

NIST SP 800-53: AC-6(10)

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: $ sudo grep -iR CtrlAltDelBurstAction /etc/systemd/system* /etc/systemd/system.conf.d/55-CtrlAltDel-BurstAction.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 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.conf Edit the file to contain the setting by adding the following text: [Manager] CtrlAltDelBurstAction=none Reload the daemon for this change to take effect. $ sudo systemctl daemon-reload

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