MacOS High Sierra bug allows full admin access without a password
MacOS High Sierra bug allows full admin access without a password
macOS High Sierra security vulnerability discovered, here's how to set root password for fix
29 November, 2017, 01:58
From the account, you'll able to see everything on the Mac. As it turns out, it's remarkably easy for someone to gain admin access to the device; you don't even need a password. Then, instead of entering a password, you can type in "root" for the username and leave the password field empty.
CNET independently confirmed that you can login on MacOS High Sierra with just the username "root".
A software developer appears to have found a major security flaw with the latest version of the MacOS High Sierra.
Security vulnerabilities don't get a lot worse than this, as it requires nearly no technical skills to pull it off. The bug gives anyone unauthorized administration access to a Mac using a very simple trick: logging in as root.
A number of users have reported the issue is not active in other versions of MacOS.
On an up-to-date Mac, users can apparently gain access to change protected settings in certain circumstances by telling the system their username is "root" and providing a blank password. The Apple Support Twitter account acknowledged Ergin's tweet highlighting the issue but did not provide any additional comment. We'll update this post if we hear back. (The company maintains an invite-only bug bounty program.) Despite its incredibly alarming simplicity, The Verge is not reproducing the steps to bypass High Sierra's login screen here.
Once a password has been set for the "root" account, the flaw that allows a person to login as "root" with no password will no longer work. Changing the root password is the workaround for now.
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