Detections
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RHEL-10-700820 - RHEL 10 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 a mixed operating system environment, this can create the risk of short-term loss of systems' availability due to unintentional reboot.Solution
Configure RHEL 10 to disallow the user changing the Ctrl-Alt-Del sequence in the GNOME desktop.Note: The example below is using the database "local" for the system. If the system is using another database in "/etc/dconf/profile/user", the file should be created under the appropriate subdirectory.
Update the "/etc/dconf/db/local.d/locks/session" file to prevent nonprivileged users from modifying the Ctrl-Alt-Del setting:
$ sudo vi /etc/dconf/db/local.d/locks/session
/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_RHEL_10_V1R1_STIG.zip
Item Details
Audit Name: DISA Red Hat Enterprise Linux 10 STIG v1r1
Category: SYSTEM AND COMMUNICATIONS PROTECTION
References: 800-53|SC-5, CAT|II, CCI|CCI-002385, Rule-ID|SV-281285r1197249_rule, STIG-ID|RHEL-10-700820, Vuln-ID|V-281285
Plugin: Unix
Control ID: 4df0446b55be7fb69739a8e696e7824d2fb943e3146c847fdc02928991d0dd0b