macOS 15 - Sequoia
The macOS system must disable iCloud Mail
STIG ID: APPL-15-002015 | SRG: SRG-OS-000095-GPOS-00049 | Severity: Medium | CCI: CCI-000381 | Vulnerability ID: V-268490
Description
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.
Check
C-268490r1034410_chk
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').jsEOSIf the result is not "false", this is a finding.
Fix
F-72421r1034409_fix
Configure the macOS system to disable iCloud Mail by installing the "com.apple.applicationaccess" configuration profile.