Apple Fixes Root Access Bug with Security Update

Yesterday a serious security flaw in macOS High Sierra was discovered that let someone with access to a Mac running Apple’s latest OS gain root access to the its data. Today, Apple released Security Update 2017-001, which fixes the issue. The release notes to the update describe the issue as follows:

Impact: An attacker may be able to bypass administrator authentication without supplying the administrator’s password
Description: A logic error existed in the validation of credentials. This was addressed with improved credential validation.

In a comment to Rene Ritchie of iMore.com, Apple said:

https://twitter.com/reneritchie/status/935909201821478914

Needless to say, this is an important update that should be installed as soon as possible.