Title

The macOS system must disable iCloud Document Sync. (Cat II impact)

Discussion

The macOS built-in iCloud document synchronization service must be disabled to prevent organizational data from being synchronized to personal or nonapproved storage. Apple's iCloud service does not provide an organization with enough control over the storage and access of data and, therefore, automated document synchronization must be controlled by an organization-approved service.

Check Content

Verify the macOS system is configured to disable iCloud Document Sync with the following command: /usr/bin/osascript -l JavaScript << EOS $.NSUserDefaults.alloc.initWithSuiteName('com.apple.applicationaccess')\ .objectForKey('allowCloudDocumentSync').js EOS If the result is not "false", this is a finding.

Fix Text

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

Additional Identifiers

Rule ID: SV-268502r1034446_rule

Vulnerability ID: V-268502

Group Title: SRG-OS-000095-GPOS-00049

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.