Finding ID | Version | Rule ID | IA Controls | Severity |
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V-219212 | UBTU-18-010151 | SV-219212r832928_rule | High |
Description |
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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. |
STIG | Date |
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Canonical Ubuntu 18.04 LTS Security Technical Implementation Guide | 2023-03-06 |
Check Text ( C-20937r832926_chk ) |
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Verify the Ubuntu operating system is not configured to reboot the system when Ctrl-Alt-Delete is pressed. Check that the "ctrl-alt-del.target" (otherwise also known as reboot.target) is not active with the following command: $ sudo systemctl status ctrl-alt-del.target ctrl-alt-del.target Loaded: masked (/dev/null; bad) Active: inactive (dead) If the "ctrl-alt-del.target" is not masked, this is a finding. |
Fix Text (F-20936r832927_fix) |
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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 And reload the daemon to take effect: $ sudo systemctl daemon-reload |