V-282378

Discussion

A session time-out 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 log out because of the temporary nature of the absence. Rather than relying on the user to manually lock their operating system session prior to vacating the vicinity, the GNOME desktop can be configured to identify when a user's session has idled and act to initiate the session lock. As such, users should not be allowed to change session settings. Satisfies: SRG-OS-000029-GPOS-00010, SRG-OS-000031-GPOS-00012

Check Content

Verify TOSS 5 prevents a user from overriding settings for graphical user interfaces. 

Note: This requirement assumes the use of the TOSS 5 default graphical user interface—the GNOME desktop environment. If the system does not have a graphical user interface installed, this requirement is not applicable.

Determine which profile the system database is using by running the following command:

$ sudo grep system-db /etc/dconf/profile/user

system-db:local

Verify the graphical settings are locked from nonprivileged user modification using the following command:

Note: The example below is using the database "local" for the system, so the path is "/etc/dconf/db/local.d". This path must be modified if a database other than "local" is being used.

$ sudo grep -i idle /etc/dconf/db/local.d/locks/*

/org/gnome/desktop/session/idle-delay

If the command does not return at least the example result, this is a finding.