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RHEL-09-271055 RHEL 9 must enable a user session lock until that user re-establishes access using established identification and authentication procedures for graphical user sessions.

DISA STIG library V2R10
All changes in this version
first version loaded CAT II

Maps to AC-11 via CCI-000056, CCI-000057, CCI-000058

Title

RHEL 9 must enable a user session lock until that user re-establishes access using established identification and authentication procedures for graphical user sessions.

Control

Verify RHEL 9 enables a user's session lock until that user re-establishes access using established identification and authentication procedures with the following command: Note: This requirement assumes the use of the RHEL 9 default graphical user interface, the GNOME desktop environment. If the system does not have any graphical user interface installed, this requirement is Not Applicable. $ gsettings get org.gnome.desktop.screensaver lock-enabled true If the setting is "false", this is a finding.

Discussion

A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not want to log out because of the temporary nature of the absence. The session lock is implemented at the point where session activity can be determined. Regardless of where the session lock is determined and implemented, once invoked, the session lock must remain in place until the user reauthenticates. No other activity aside from reauthentication must unlock the system. Satisfies: SRG-OS-000028-GPOS-00009, SRG-OS-000030-GPOS-00011

Related controls

CCI-000056, CCI-000057, CCI-000058

Fix

Configure RHEL 9 to enable a user's session lock until that user re-establishes access using established identification and authentication procedures. Create a database to contain the system-wide screensaver settings (if it does not already exist) with the following example: $ sudo vi /etc/dconf/db/local.d/00-screensaver Edit the "[org/gnome/desktop/screensaver]" section of the database file and add or update the following lines: # Set this to true to lock the screen when the screensaver activates lock-enabled=true Update the system databases: $ sudo dconf update