The macOS system must disable iCloud Keychain synchronization.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-259501	APPL-14-002040	SV-259501r941125_rule		Medium

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.

STIG	Date
Apple macOS 14 (Sonoma) Security Technical Implementation Guide	2024-01-10

Details

Check Text ( C-63240r941123_chk )
Verify the macOS system is configured to disable iCloud Keychain synchronization with the following command: /usr/bin/osascript -l JavaScript << EOS $.NSUserDefaults.alloc.initWithSuiteName('com.apple.applicationaccess')\ .objectForKey('allowCloudKeychainSync').js EOS If the result is not "false", this is a finding.

Fix Text (F-63148r941124_fix)
Configure the macOS system to disable iCloud Keychain synchronization by installing the "com.apple.applicationaccess" configuration profile.