The Oracle Linux operating system must be configured so the x86 Ctrl-Alt-Delete key sequence is disabled in the Graphical User Interface.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-228565 | OL07-00-020231 | SV-228565r991589_rule | CCI-000366 | high |
| 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 environment, risk of unintentional reboot from the Ctrl-Alt-Delete sequence is reduced because the user will be prompted before any action is taken. | ||||
| STIG | Date | |||
| Oracle Linux 7 Security Technical Implementation Guide | 2025-05-08 | |||
Details
Check Text (C-228565r991589_chk)
Note: If the operating system does not have a graphical user interface installed, this requirement is Not Applicable.
Verify the operating system is not configured to reboot the system when Ctrl-Alt-Delete is pressed.
Check that the ctrl-alt-del.target is masked and not active in the graphical user interface with the following command:
# grep logout /etc/dconf/db/local.d/*
logout=''
If "logout" is not set to use two single quotations, or is missing, this is a finding.
Fix Text (F-36295r602588_fix)
Configure the system to disable the Ctrl-Alt-Delete sequence for the graphical user interface with the following command:
# touch /etc/dconf/db/local.d/00-disable-CAD
Add the setting to disable the Ctrl-Alt-Delete sequence for the graphical user interface:
[org/gnome/settings-daemon/plugins/media-keys]
logout=''