Detections
Analytics
OL09-00-002129 - OL 9 must prevent a user from overriding the Ctrl-Alt-Del sequence settings for the graphical user interface.
Information
A locally logged-in user who presses Ctrl-Alt-Del, when at the console, can reboot the system. If accidentally pressed, as could happen in the case of mixed OS environment, this can create the risk of short-term loss of availability of systems due to unintentional reboot.Solution
Configure OL 9 to disallow the user changing the Ctrl-Alt-Del sequence in the GNOME desktop.Create a database to container system-wide graphical user logon settings (if it does not already exist) with the following command:
$ sudo touch /etc/dconf/db/local.d/locks/session
Add the following line to the session locks file to prevent nonprivileged users from modifying the Ctrl-Alt-Del setting:
/org/gnome/settings-daemon/plugins/media-keys/logout
Run the following command to update the database:
$ sudo dconf update
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Oracle_Linux_9_V1R4_STIG.zip
Item Details
Audit Name: DISA Oracle Linux 9 STIG v1r4
Category: CONFIGURATION MANAGEMENT
References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-271687r1091773_rule, STIG-ID|OL09-00-002129, Vuln-ID|V-271687
Plugin: Unix
Control ID: 1b41d354508888703101f9d8689be3cb9fc24299cd6464ded3b1c25694cda683