Apple Releases macOS High Sierra Security Update to Fix Root Password Vulnerability

Apple today released Security Update 2017-001 to fix a serious vulnerability that enables access to the root superuser account with a blank password on any Mac running macOS High Sierra version 10.13.1.

rootbug
The critical bug, which gained attention after it was tweeted by developer Lemi Ergin yesterday, lets anyone gain administrator privileges by simply entering the username "root" and a blank password in System Preferences > Users & Groups.

The security update is rolling out on the Mac App Store now, and it should be installed by all users running macOS High Sierra as soon as possible. Regardless, starting later today, Apple said the security update will be automatically installed on all Macs running macOS High Sierra 10.13.1.

Apple has since apologized for the vulnerability in a statement issued to MacRumors:

Security is a top priority for every Apple product, and regrettably we stumbled with this release of macOS.

When our security engineers became aware of the issue Tuesday afternoon, we immediately began working on an update that closes the security hole. This morning, as of 8 a.m., the update is available for download, and starting later today it will be automatically installed on all systems running the latest version (10.13.1) of macOS High Sierra.

We greatly regret this error and we apologize to all Mac users, both for releasing with this vulnerability and for the concern it has caused. Our customers deserve better. We are auditing our development processes to help prevent this from happening again.

The vulnerability does not affect macOS Sierra or any other previous version of the operating system.

Related Forum: macOS High Sierra

Popular Stories

iPhone SE 4 Vertical Camera Feature

iPhone SE 4 Production Will Reportedly Begin Ramping Up in October

Tuesday July 23, 2024 2:00 pm PDT by
Following nearly two years of rumors about a fourth-generation iPhone SE, The Information today reported that Apple suppliers are finally planning to begin ramping up mass production of the device in October of this year. If accurate, that timeframe would mean that the next iPhone SE would not be announced alongside the iPhone 16 series in September, as expected. Instead, the report...
iPhone 17 Plus Feature

iPhone 17 Lineup Specs Detail Display Upgrade and New High-End Model

Monday July 22, 2024 4:33 am PDT by
Key details about the overall specifications of the iPhone 17 lineup have been shared by the leaker known as "Ice Universe," clarifying several important aspects of next year's devices. Reports in recent months have converged in agreement that Apple will discontinue the "Plus" iPhone model in 2025 while introducing an all-new iPhone 17 "Slim" model as an even more high-end option sitting...
Generic iPhone 17 Feature With Full Width Dynamic Island

Kuo: Ultra-Thin iPhone 17 to Feature A19 Chip, Single Rear Camera, Semi-Titanium Frame, and More

Wednesday July 24, 2024 9:06 am PDT by
Apple supply chain analyst Ming-Chi Kuo today shared alleged specifications for a new ultra-thin iPhone 17 model rumored to launch next year. Kuo expects the device to be equipped with a 6.6-inch display with a current-size Dynamic Island, a standard A19 chip rather than an A19 Pro chip, a single rear camera, and an Apple-designed 5G chip. He also expects the device to have a...
iPhone 16 Pro Sizes Feature

iPhone 16 Series Is Less Than Two Months Away: Everything We Know

Thursday July 25, 2024 5:43 am PDT by
Apple typically releases its new iPhone series around mid-September, which means we are about two months out from the launch of the iPhone 16. Like the iPhone 15 series, this year's lineup is expected to stick with four models – iPhone 16, iPhone 16 Plus, iPhone 16 Pro, and iPhone 16 Pro Max – although there are plenty of design differences and new features to take into account. To bring ...
icloud private relay outage

iCloud Private Relay Experiencing Outage

Thursday July 25, 2024 3:18 pm PDT by
Apple’s iCloud Private Relay service is down for some users, according to Apple’s System Status page. Apple says that the iCloud Private Relay service may be slow or unavailable. The outage started at 2:34 p.m. Eastern Time, but it does not appear to be affecting all iCloud users. Some impacted users are unable to browse the web without turning iCloud Private Relay off, while others are...
iPhone 17 Plus Feature Purple

iPhone 17 Rumored to Feature Mechanical Aperture

Tuesday July 23, 2024 9:32 am PDT by
Apple is planning to release at least one iPhone 17 model next year with mechanical aperture, according to a report published today by The Information. The mechanical system would allow users to adjust the size of the iPhone 17's aperture, which refers to the opening of the camera lens through which light enters. All existing iPhone camera lenses have fixed apertures, but some Android...

Top Rated Comments

aforty Avatar
87 months ago
How embarrassing...

I wish Apple did a better job testing their releases. We used to enjoy such high quality when it came to software updates and releases.
Score: 42 Votes (Like | Disagree)
bwintx Avatar
87 months ago
That was quick
And it was utterly necessary that it be just that.
Score: 36 Votes (Like | Disagree)
dannyyankou Avatar
87 months ago
That was quick
Score: 34 Votes (Like | Disagree)
AbSoluTc Avatar
87 months ago
How embarrassing...

I wish Apple did a better job testing their releases. We used to enjoy such high quality when it came to software updates and releases.
You ever heard of Windows? Perhaps you should read up on that OS if you haven't.

Also, give me a break. Nobody finds everything, not even "Apple". Patched quickly and painlessly. Move along.
Score: 31 Votes (Like | Disagree)
longofest Avatar
87 months ago
You ever heard of Windows? Perhaps you should read up on that OS if you haven't.

Also, give me a break. Nobody finds everything, not even "Apple". Patched quickly and painlessly. Move along.
Three... count 'em... THREE... critical and ridiculous security issues with Mac OS High Sierra within as many months. This one, the Disk utility one, and the keychain one. And that's just the security issues...

There's no excuse for it. Saying "well, microsoft is just as bad" just means that Apple is stooping to Microsoft's level... but I'd actually venture to say that Apple is starting to get worse than Microsoft when it comes to Mac OS vs Windows.
Score: 13 Votes (Like | Disagree)
discuit Avatar
87 months ago
This is actually an argument in favor of public disclosure of vulnerabilities. Lemi Orhan Ergin was catching a lot of criticism yesterday for posting it on twitter, but if this bug had been reported privately, it would have taken much longer to fix, while malicious actors would be able to exploit it all along.
Score: 10 Votes (Like | Disagree)