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Yet another macOS High Sierra bug: Unlock App Store system preferences with any password

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<p>Less than two months ago, Apple users discovered a bug in macOS that allowed anyone to log in with root access (https://www.macworld.com/article/3238868/macs/macos-high-sierra-root-security-issue-allows-admin-access-to-your-macbut-theres-a-fix.html). Apple apologized and fixed it quickly, but now users on <a href="https://openradar.appspot.com/36350507" rel="nofollow">Open Radar[/url] have found a similar (but far less severe) macOS password bug.</p><p>If you're running macOS High Sierra, try this: </p><ol>
<li>Open <strong>System Preferences</strong>.</li>
<li>Click on <strong>App Store</strong>.</li>
<li>If the padlock is unlocked, <strong>click to lock it</strong>.</li>
<li>Click the padlock to <strong>unlock it</strong>.</li>
<li>In the prompt, enter your username and any password.</li>
</ol>
<p>The App Store preferences pane should unlock. We tried it on a new iMac and MacBook Pro, both with macOS 10.13.2, and it worked.</p><p class="jumpTag"><a href="/article/3246634/macs/macos-high-sierra-bug-unlock-app-store-system-preferences.html#jump">To read this article in full, please click here[/url]</p></section></article>

Source: Yet another macOS High Sierra bug: Unlock App Store system preferences with any password (https://www.macworld.com/article/3246634/macs/macos-high-sierra-bug-unlock-app-store-system-preferences.html#tk.rss_all)