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Apple’s #IAmRoot fix has introduced another bug

It’s been a rough week for Mac users.

First, they had to contend with a hole in macOS High Sierra’s security, which allowed anyone to access their files, simply by logging in as ‘root’ with no password.

Once this flaw was identified, Apple offered an immediate (if rather convoluted solution) and then went to work on patching the problem, which it rolled out on Wednesday night (local time).

Unfortunately it seems that, in its haste to fix this flaw, Apple has introduced another bug that affects the file sharing functionality in macOS High Sierra. Yikes!

According to a report from The Guardian, this new flaw “prevents users from authenticating with or connecting to file shares, which are used both in business and on home networks.”

Now, this obviously isn’t as dangerous a flaw as the original one – which users have dubbed #IAmRoot – but it’s still pretty bloody annoying.

The good news is that Apple has posted a fix for this problem. The bad news is that it requires anyone who wants to fix it to have a working knowledge of the Terminal app, a rather advanced feature that allows users to perform command line actions. To save you a click to Apple’s support page, here’s what you need to do:

  • Open the Terminal app, which is in the Utilities folder of your Applications folder.
  • Type sudo /usr/libexec/configureLocalKDC and press Return.
  • Enter your administrator password and press Return.
  • Quit the Terminal app.

To be frank, this isn’t looking good for Apple. For a company that used to be the yardstick for security, this last week has signalled a worrying trend. Here’s hoping things get better for Mac users going forward.

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