Apple Releases macOS High Sierra 10.13.4 Security Update
Apr 24, 2018 10:07 am PDT by Juli Clover
Apple today released a new security update for macOS High Sierra 10.13.4, which comes nearly one month after the first version of macOS High Sierra 10.13.4 was released to the public.


The new macOS High Sierra security update can be downloaded directly from the Mac App Store or through the Software Update function in the Mac App Store on all compatible Macs that are already running macOS High Sierra.

According to Apple's release notes, Security Update 2018-001 is recommended for all users and is meant to improve the security of macOS. The update addresses two security vulnerabilities related to Crash Reporter and LinkPresentation, both of which could be used maliciously to gain access to a Mac. A Safari 11.1 update is also included, with fixes for WebKit vulnerabilities.

Additional information on what's included in the security update can be found in the accompanying support document.

Related Roundup: macOS High Sierra

Top Rated Comments

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17 weeks ago
Wow, 1GB. That’s one heck of a security update.
Rating: 9 Votes
17 weeks ago
Does DisplayLink's sketchy driver work again?
Rating: 7 Votes
17 weeks ago
It's good that Apple didn't decide to wait until 10.13.5 to fix these vulnerabilities. My only concern is that El Capitan and Sierra have yet to receive the update.
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Oh no just with every update for about a year now, my Mac will not boot up afterwards unless I restore it from a backup ...

This definitely isn't normal. I'd recommend doing a fresh install of the latest version and restoring only the apps / files you need from backup.
Rating: 6 Votes
17 weeks ago
Fix DisplayLink yet?
Rating: 5 Votes
17 weeks ago

Wow, 1GB. That’s one heck of a security update.

Surely they also fixed a few bugs that they know are there, so they were embarrassed to mention. Or they didn't fix it and the software lately is just that bad.
Rating: 5 Votes
17 weeks ago


And WHERE did you find THAT info?


Well, when the article was posted I eagerly opened the App Store on my Mac and began the download, licking my lips in anticipation for the newest OS patch.

As it began downloading, I noticed the size of the update was exactly 1.0GB. My face pouted slightly and I gave my stubble a quizzical stroke, noting at that point that I should probably invest in a new razor.

"Security Updates which are in the same x.x.x version are historically quite small", I told myself. "They're not normally 1GB. How odd!"

As if by magic, the trackpad gravitated back to the MacRumors Safari tab and I publicly mused my confusion in the very comment you are quoting.

Does this help?
Rating: 5 Votes
17 weeks ago

It’s weird. Everytime i get an update, my late 2012 MacBook Pro Retina gets stuck on like 80% of the loading bar after a reboot and doesn’t move. A friend of mine ironically had the same issue on her 2009 MacBook Pro



For anybody where the update hangs at the progress bar, try unplugging all external devices (including your iPhone if it's docked). That fixed the issue with the updates hanging and I've had that problem with every update since HS was released.
Rating: 4 Votes
17 weeks ago
Mine hung during installation too. I let it sit overnight, and it made zero progress. Had to hard reboot.

I never saw this problem pre-High Sierra. Now, I've seen it on multiple Mac across multiple HS updates.
Rating: 4 Votes
17 weeks ago

Does DisplayLink's sketchy driver work again?

I'm a Duet user and have been holding off on the .4 update for this very reason. I'm hoping there's some progress soon so I can rejoin the rest of you on the latest, most secure version of OS X.
Rating: 3 Votes
17 weeks ago
Gone back to Yosemite after running out of patience with High Sierra. Now no more signing out of websites, no more daft message telling me I can't use full screen when I am in full screen, A calendar I can set new events on again, Reaper works just as well, everything runs just as well if not snappier. Now trying to return to Snow Leopard where I can ditch all the silly Mac apps like Chess, Dashboard, Game Centre, iTunes, iWebb, Launchpad, Mission Control, Photo Booth, Photos, Reminders etc. etc and run a lean machine again. And not feel walled in by Appledom. Enough.
Rating: 3 Votes

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