The macOS system must disable iCloud Storage Setup during Setup Assistant.

STIG ID: APPL-14-002037  |  SRG: SRG-OS-000095-GPOS-00049 |  Severity: medium |  CCI: CCI-000381 |  Vulnerability Id: V-259498

Vulnerability Discussion

The prompt to set up iCloud storage services during Setup Assistant must
be disabled.

The default behavior of macOS is to prompt new users to set up storage in iCloud. Disabling the iCloud
storage setup prompt provides organizations more control over the storage of their data.

Check

Verify the macOS system is configured to disable iCloud Storage Setup during Setup
Assistant with the following command:

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

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

Fix

Configure the macOS system to disable iCloud Storage Setup during Setup
Assistant by installing the "com.apple.SetupAssistant.managed" configuration profile.