The macOS system must conceal, via the session lock, information previously visible on the display with a publicly viewable image.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-257147	APPL-13-000006	SV-257147r905074_rule		Medium

Description
A default screen saver must be configured for all users, as the screen saver will act as a session timeout lock for the system and must conceal the contents of the screen from unauthorized users. The screen saver must not display any sensitive information or reveal the contents of the locked session screen. Publicly viewable images can include static or dynamic images such as patterns used with screen savers, photographic images, solid colors, a clock, a battery life indicator, or a blank screen.

Description

A default screen saver must be configured for all users, as the screen saver will act as a session timeout lock for the system and must conceal the contents of the screen from unauthorized users. The screen saver must not display any sensitive information or reveal the contents of the locked session screen. Publicly viewable images can include static or dynamic images such as patterns used with screen savers, photographic images, solid colors, a clock, a battery life indicator, or a blank screen.

STIG	Date
Apple macOS 13 (Ventura) Security Technical Implementation Guide	2023-08-28

Details

Check Text ( C-60832r905072_chk )
Verify the macOS system is configured with a screen saver with the following command: /usr/sbin/system_profiler SPConfigurationProfileDataType \| /usr/bin/grep "moduleName" moduleName = Ventura; If there is no result or the "moduleName" is undefined, this is a finding.

Fix Text (F-60773r905073_fix)
Configure the macOS system with a screen saver by installing the "Login Window Policy" configuration profile.