The macOS system must be configured to lock the user session when a smart token is removed.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-209525	AOSX-14-000005	SV-209525r610285_rule		Medium

Description
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. Rather than be forced to wait for a period of time to expire before the user session can be locked, operating systems need to provide users with the ability to manually invoke a session lock so users may secure their session should they need to temporarily vacate the immediate physical vicinity.

Description

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. Rather than be forced to wait for a period of time to expire before the user session can be locked, operating systems need to provide users with the ability to manually invoke a session lock so users may secure their session should they need to temporarily vacate the immediate physical vicinity.

STIG	Date
Apple OS X 10.14 (Mojave) Security Technical Implementation Guide	2021-03-29

Details

Check Text ( C-9776r282057_chk )
To check if support for session locking with removal of a token is enabled, run the following command: /usr/sbin/system_profiler SPConfigurationProfileDataType \| /usr/bin/grep "tokenRemovalAction = 1;" If there is no result, this is a finding.

Fix Text (F-9776r282058_fix)
This setting is enforced using the "Smart Card Policy" configuration profile. Note: Before applying the "Smart Card Policy", the supplemental guidance provided with the STIG should be consulted to ensure continued access to the operating system.