Title

Graphical desktop environments provided by the system must automatically lock after 15 minutes of inactivity. (Cat II impact)

Discussion

Allowing access to a graphical environment when the user is not attending the system can allow unauthorized users access to the system.

Check Content

If the system is not running XWindows, this check does not apply. Determine if the screen saver timeout is configured properly. # grep "^\*timeout:" /usr/share/X11/app-defaults/XScreenSaver If the output is not: *timeout: 0:15:00 this is a finding. # grep "^\*lockTimeout:" /usr/share/X11/app-defaults/XScreenSaver If the output is not: *lockTimeout: 0:00:05 this is a finding. # grep "^\*lock:" /usr/share/X11/app-defaults/XScreenSaver If the output is not: *lock: True this is a finding. For each existing user, check the configuration of their personal .xscreensaver file. # grep "^lock:" $HOME/.xscreensaver If the output is not: *lock: True this is a finding. grep "^lockTimeout:" $HOME/.xscreensaver If the output is not: *lockTimeout: 0:00:05 this is a finding.

Fix Text

The root role is required. Edit the global screensaver configuration file to ensure 15 minute screen lock. # pfedit /usr/share/X11/app-defaults/XScreenSaver Find the timeout control lines and change them to read: *timeout: 0:15:00 *lockTimeout:0:00:05 *lock: True For each user on the system, edit their local $HOME/.xscreensaver file and change the timeout values. # pfedit $HOME/.xscreensaver Find the timeout control lines and change them to read: timeout: 0:15:00 lockTimeout:0:00:05 lock: True

Additional Identifiers

Rule ID: SV-216337r603267_rule

Vulnerability ID: V-216337

Group Title: SRG-OS-000029

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