macOS 15 - Sequoia

The macOS system must disable iCloud Keychain Sync

STIG ID: APPL-15-002040 | SRG: SRG-OS-000095-GPOS-00049 | Severity: Medium | CCI: CCI-000381 | Vulnerability ID: V-268501

Description

The macOS system's ability to automatically synchronize a user's passwords to their iCloud account must be disabled.Apple's iCloud service does not provide an organization with enough control over the storage and access of data and, therefore, password management and synchronization must be controlled by an organization-approved service.

Check

C-268501r1034443_chk

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

Fix

F-72432r1034442_fix

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