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Patch for macOS Root Access Flaw Breaks File Sharing

November 30, 2017

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The patch released by Apple on Wednesday for a critical root access vulnerability affecting macOS High Sierra appears to break the operating system’s file sharing functionality in some cases. The company has provided an easy fix for affected users.

The flaw, tracked as CVE-2017-13872, allows an attacker to gain privileged access to a device running macOS High Sierra by logging in to the root account via the graphical user interface with the username “root” and any password. Apple has disabled the root account by default and when users attempt to log in to this account, the password they enter is set as its password. If the password field is left blank, there will be no password on the root account.

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