STIG ID: APPL-14-000090 | SRG: SRG-OS-000104-GPOS-00051 | Severity: medium | CCI: | Vulnerability Id: V-259443
The ability to log in to another user's active or locked session must be disabled.
macOS has a privilege that can be granted to any user that will allow that user to unlock active user's sessions. Disabling the admins and/or user's ability to log into another user's active and locked session prevents unauthorized persons from viewing potentially sensitive and/or personal information.
Note: Configuring this setting will disable TouchID from unlocking the screensaver.
Configure the macOS system to disable login to other user's active and locked sessions with the following command:
/usr/bin/security authorizationdb write system.login.screensaver "authenticate-session-owner"
Verify the macOS system is configured to disable login to other user's active and locked sessions with the following command:
/usr/bin/security authorizationdb read system.login.screensaver 2>&1 | /usr/bin/grep -c '
If the result is not "1", this is a finding.