Detections
Analytics
UBTU-24-300025 - Ubuntu 24.04 LTS must disable the x86 Ctrl-Alt-Delete key sequence if a graphical user interface is installed.
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 the graphical 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 Ubuntu 24.04 LTS to disable the Ctrl-Alt-Delete sequence when using a graphical user interface.Create or edit a file named /etc/dconf/db/local.d/00-mediakeys with the following contents:
[org/gnome/settings-daemon/plugins/media-keys]
logout=@as []
Update the dconf settings:
$ sudo dconf update
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_CAN_Ubuntu_24-04_LTS_V1R5_STIG.zip
Item Details
Audit Name: DISA Canonical Ubuntu 24.04 LTS STIG v1r5
Category: CONFIGURATION MANAGEMENT
References: 800-53|CM-6b., CAT|I, CCI|CCI-000366, Rule-ID|SV-270711r1184069_rule, STIG-ID|UBTU-24-300025, Vuln-ID|V-270711
Plugin: Unix
Control ID: f49a43bfb881b5186d28aa75b26e55ced8c7308403ad503aea159520ae6c7bec