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APPL-26-002015 The macOS system must disable iCloud Mail.

DISA STIG library V1R4
All changes in this version
first version loaded CAT II

Maps to CM-7 via CCI-000381

Title

The macOS system must disable iCloud Mail.

Control

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

Discussion

The macOS built-in Mail.app connection to Apple's iCloud service must be disabled. Apple's iCloud service does not provide an organization with enough control over the storage and access of data and, therefore, automated mail synchronization must be controlled by an organization-approved service.

Related controls

CCI-000381

Fix

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