Detections
Analytics

1.71 UBTU-22-271030

Information

The operating system must disable the x86 Ctrl-Alt-Delete key sequence if a graphical user interface is installed.

GROUP ID: V-260539
RULE ID: SV-260539r1069103

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 the operating system 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-screensaver with the following contents:

[org/gnome/settings-daemon/plugins/media-keys]
logout=""

Update the dconf settings:

$ sudo dconf update

See Also

https://workbench.cisecurity.org/benchmarks/22168

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CAT|I, CCI|CCI-000366, CSCv7|5.1, Rule-ID|SV-260539r1069103_rule, STIG-ID|UBTU-22-271030, Vuln-ID|V-260539

Plugin: Unix

Control ID: 0d6ed2302ac077452531f1458db9564c7e06b4644b17c6582f3fb80b6a6de2aa