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SLEM 5 must disable the x86 Ctrl-Alt-Delete key sequence.

An XCCDF Rule

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 availability of systems due to unintentional reboot. In the graphical user interface environment, risk of unintentional reboot from the Ctrl-Alt-Delete sequence is reduced because the user will be prompted before any action is taken.

ID
SV-261266r996292_rule
Severity
High
References
Updated

Remediation Templates

A Manual Procedure

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