Security expert discovered a new vulnerability in macOS High Sierra that could be exploited by users logged as admins to unlock the AppStore Preferences in System Preferences by providing any password. The vulnerability was reported by Eric Holtam and affects the latest version of MacOS 10.13.2.2. Apple has issued a security patch in the latest beta version of the software and the problem will be addressed in a future update for stable versions. The issue doesnt affect non-admin accounts that must provide correct credentials to unlock AppStore preferences.”]
Source: https://securityaffairs.co/wordpress/67649/hacking/macos-high-sierra-flaw.html