Title

The system must display a publicly-viewable pattern during a graphical desktop environment session lock. (Cat III impact)

Discussion

To protect the on-screen content of a session, it must be replaced with a publicly-viewable pattern upon session lock. Examples of publicly viewable patterns include screen saver patterns, photographic images, solid colors, or a blank screen, so long as none of those patterns convey sensitive information. This requirement applies to graphical desktop environments provided by the system to locally attached displays and input devices, as well as, to graphical desktop environments provided to remote systems using remote access protocols.

Check Content

NOTE: This will virtually always be a manual review. Determine if a publicly-viewable pattern is displayed during a session lock. If the session lock pattern is not publicly-viewable, this is a finding.

Fix Text

Configure the system to display a publicly-viewable pattern during a session lock.

Additional Identifiers

Rule ID: SV-38275r1_rule

Vulnerability ID: V-22301

Group Title: GEN000510

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.