Big Sur - Disable Login to Other User's Active and Locked Sessions

Information

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 andlocked session prevents unauthorized persons from viewing potentially sensitive and/or personal information.

Solution

[source,bash]
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/usr/bin/security authorizationdb write system.login.screensaver "use-login-window-ui"
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See Also

https://github.com/usnistgov/macos_security

Item Details

Category: ACCESS CONTROL, IDENTIFICATION AND AUTHENTICATION

References: 800-53|AC-6, 800-53|AC-6(1), 800-53|AC-6(2), 800-53|IA-2, 800-53|IA-2(5), CCE|CCE-85395-2

Plugin: Unix

Control ID: 0260c8e55b623da1ef5ad9efacb72d5a9d89fe830152913fedd204428ea6499e