The macOS system must disable logon to other user's active and locked sessions.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-259443 | APPL-14-000090 | SV-259443r1009579_rule | CCI-000764 | medium |
| Description | ||||
| 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. | ||||
| STIG | Date | |||
| Apple macOS 14 (Sonoma) Security Technical Implementation Guide | 2024-12-04 | |||
Details
Check Text (C-259443r1009579_chk)
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 '<string>authenticate-session-owner</string>'
If the result is not "1", this is a finding.
Fix Text (F-63090r986248_fix)
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"