Vulnerability Discussion

Users must enroll their Mac in a Mobile Device Management (MDM) software.

User Approved MDM (UAMDM) enrollment or enrollment via Apple Business Manager (ABM)/Apple School Manager (ASM) is required to manage certain security settings. Currently these include:

* Allowed Kernel Extensions
* Allowed Approved System Extensions
* Privacy Preferences Policy Control Payload
* ExtensibleSingleSignOn
* FDEFileVault

In macOS 11, UAMDM grants Supervised status on a Mac, unlocking the following MDM features, which were previously locked behind ABM:

* Activation Lock Bypass
* Access to Bootstrap Tokens
* Scheduling Software Updates
* Query list and delete local users

Check

Verify the macOS system is configured to enforce enrollment in mobile device management with the following command:

/usr/bin/profiles status -type enrollment | /usr/bin/awk -F: '/MDM enrollment/ {print $2}' | /usr/bin/grep -c "Yes (User Approved)"

If the result is not "1", this is a finding.

Fix

Configure the macOS system by ensuring that system is enrolled via UAMDM.