Security bug: MacOS root access!

In case you missed the news…

Originally shared by +Vlad Markov

If you have a High Sierra Mac OS, make sure to fix this bug, steps to fix, if you have administrator privileges:
macbook:user1$ sudo passwd root
Password: <your user1 password>
Changing password for root.
New password: <new password for root>
Retype new password: <new password for root>

Major macOS High Sierra Bug Allows Full Admin Access Without Password – How to Fix [Updated]