Vulnerability Discussion

The macOS built-in Freeform.app connection to Apple's iCloud service must be disabled.

Enabling any service increases the attack surface for an intruder. By disabling unnecessary services, the attack surface is minimized.

Check

Verify the macOS system is configured to disable iCloud Freeform services with the following command:

/usr/bin/osascript -l JavaScript << EOS
$.NSUserDefaults.alloc.initWithSuiteName('com.apple.applicationaccess')\
.objectForKey('allowCloudFreeform').js
EOS

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

Fix

Configure the macOS system to disable iCloud Freeform services by installing the "com.apple.applicationaccess" configuration profile.