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V-277110

CAT II (Medium)

The macOS system must disable iCloud Keychain Sync.

Rule ID

SV-277110r1148782_rule

STIG

Apple macOS 26 (Tahoe) Security Technical Implementation Guide

Version

V1R2

CCIs

CCI-000381

Discussion

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 Content

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').js
EOS

If the result is not "false", this is a finding.

Fix Text

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