If you are a Mac user or have Mac users you support, please take time to mitigate this problem by setting the root password by following the instructions provided by Apple and referenced in these articles.  Hopefully a patch is coming soon.

https://www.infosecurity-magazine.com/news/apple-works-to-fix-serious-mac/

https://www.macrumors.com/2017/11/28/macos-high-sierra-bug-admin-access/?utm_source=feedly&utm_medium=webfeeds