Apple Releases iOS 12.4.1 With Jailbreak Vulnerability Fix

Apple today released iOS 12.4.1, a minor update that comes one month after the launch of iOS 12.4.

The iOS 12.4.1 update is available on all eligible devices over-the-air in the Settings app. To access the update, go to Settings > General > Software Update. As with all iOS updates, iOS 12.4.1 is free to download.


Today's update includes a fix for a vulnerability that allowed hackers to create a jailbreak for the iOS 12.4 update, according to Apple's security support document. Apple actually addressed the vulnerability in iOS 12.3, but then accidentally unpatched it in the iOS 12.4 update.

Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation

Impact: A malicious application may be able to execute arbitrary code with system privileges

Description: A use after free issue was addressed with improved memory management.

CVE-2019-8605: Ned Williamson working with Google Project Zero

After hackers discovered that the vulnerability was once again available, it didn't take long for a jailbreak to be created. The security issue also left iOS devices vulnerable to hacking attempts, which is why Apple likely worked quickly to correct it.

According to Apple's release notes, the update includes "important security and stability updates" and is recommended for all users.

Top Rated Comments

(View all)
Avatar
12 months ago
In all seriousness, who is jailbreaking anymore anyway? The features we want are basically already on the OS, and really doesn't have any relevant benefits anymore other than extreme customization. At least, thats my opinion on it.

Or, just like anything else in life, they are probably doing it just to say they can do it.
Score: 12 Votes (Like | Disagree)
Avatar
12 months ago
Jailbreak is good for Apple, it helps them innovate.
Score: 11 Votes (Like | Disagree)
Avatar
12 months ago

In all seriousness, who is jailbreaking anymore anyway? The features we want are basically already on the OS, and really doesn't have any relevant benefits anymore other than extreme customization. At least, thats my opinion on it.

Or, just like anything else in life, they are probably doing it just to say they can do it.

It's not only about jailbreaking. This is an exploit that could allow any app in the App Store to jailbreak your device and allow the app to go rogue.
Score: 9 Votes (Like | Disagree)
Avatar
12 months ago

In all seriousness, who is jailbreaking anymore anyway? The features we want are basically already on the OS, and really doesn't have any relevant benefits anymore other than extreme customization. At least, thats my opinion on it.

Or, just like anything else in life, they are probably doing it just to say they can do it.

In all seriousness, there's a post like this in EVERY jailbreaking related thread. Know what the capabilities are before you act like it's beneath you. Comedic response.
Score: 8 Votes (Like | Disagree)
Avatar
12 months ago

In all seriousness, who is jailbreaking anymore anyway? The features we want are basically already on the OS, and really doesn't have any relevant benefits anymore other than extreme customization. At least, thats my opinion on it.

Or, just like anything else in life, they are probably doing it just to say they can do it.

Have you not seen the jailbreak tweaks they are amazing iOS needs them
Score: 7 Votes (Like | Disagree)
Avatar
12 months ago

I used to think that as well, I have not jailbroken since iOS 11, but I recently saw a video of all the features and tweaks in the last jailbreak and it is AMAZING. Apple should learn from these guys, something I hate about the company is their arrogance and slowness to give users what they want.

About your phrase "they are probably doing it just to say they can do it", I disagree, jailbreaking is quite easy today, nothing to brag about, do you remember how we did it back in iOS 5, iOS 6??? That was a process.

I can remember the days of jailbreaking iOS 2, 3, and 4.x. Now THOSE were some lengthy tutorials lol. Redmond Pie's guides used to involve like a dozen steps at least, and if you screwed up just one of them it could've meant an unsuccessful jailbreak or at worst, a bricked device. But those were the Steve Jobs days when Apple was much more "the customer doesn't know what they want until we tell them they want it" oriented, and so it was much more liberating to break out of their lockdown than I feel like it would be today.
Score: 6 Votes (Like | Disagree)

Top Stories

Apple Warns Against Closing MacBooks With a Cover Over the Camera

Friday July 10, 2020 11:12 am PDT by
Apple this month published a support document that warns customers against closing their Mac notebooks with a cover over the camera as it can lead to display damage. Image via Reddit Apple says that the clearance between the display and the keyboard is designed to very tight tolerances, which can be problematic. Covering the camera can also cause issues with automatic brightness and True Tone....

Leaker: 'iPhone 12 Pro' to Come With 6GB of RAM

Friday July 10, 2020 1:59 am PDT by
Later this year, Apple is expected to release four OLED iPhones in three display sizes, including 5.4, 6.7, and two 6.1-inch models. Rumors suggest the 6.7-inch iPhone and one 6.1-inch model will be higher-end devices, and now leaker @L0vetodream has corroborated previous rumors about the internal specs of Apple's upcoming lineup. Rumors suggest Apple will use 5-nanometer A14 chips in its...

Apple Moving Forward on Semitransparent Lenses for Upcoming AR Headset

Friday July 10, 2020 7:24 am PDT by
Apple and Foxconn have reached a key milestone in the development of Apple's long-rumored augmented reality headset, with the semitransparent lenses for the device moving from prototype to trial production, reports The Information. Apple is developing the lenses on a single production line at a Foxconn factory in Chengdu in southwestern China, where most of Apple’s iPad production is...

Kuo: Apple Silicon Macs to Include 13-inch MacBook Pro and MacBook Air This Year, 14.1-inch and 16-inch MacBook Pro Models Next Year

Friday July 10, 2020 2:58 am PDT by
At last month's WWDC, Apple officially announced that its Mac computers will be transitioned from Intel x86 to homegrown Apple Silicon chips. Apple said it plans to deliver the first Apple Silicon Mac by the end of the year and complete the transition in about two years. According to Apple analyst Ming-Chi Kuo, a 13.3-inch MacBook Pro with a form factor similar to the current 13.3-inch...

Arm-Intel-PowerPC Universal Binaries Are Possible

Saturday July 11, 2020 1:42 pm PDT by
Casual MacRumors visitors may not realize that we have a very active PowerPC forum where users discuss issues related to PowerPC Macs that have not been produced since 2006. Threads range from hardware upgrades and software options to nostalgia: Photo by AphoticD Apple's recently announced transition to Apple Silicon (Arm) based Macs raised some interesting questions about future support...

iPhone 12 Sizes Compared with iPhone SE, 7, 8, SE 2, X, 11, 11 Pro and 11 Pro Max [Update]

Tuesday July 7, 2020 6:49 pm PDT by
Apple is planning on launching the iPhone 12 this fall which is rumored to be coming in 3 different sizes: 5.4", 6.1" and 6.7". The middle size (6.1") matches up with the currently shipping iPhone 11, but the other two sizes will be entirely new. Over the weekend, there was some excitement about how well the new 5.4" iPhone 12 compares to the original iPhone SE. Those who have been hoping...

Tom Hanks WWII Movie 'Greyhound' Debuts on Apple TV+

Friday July 10, 2020 3:33 am PDT by
Apple TV+ today debuted "Greyhound," the highly anticipated Second World War movie starring Tom Hanks as a naval officer given command of Navy destroyer Greyhound in the Battle of the Atlantic. "Greyhound" features Hanks as George Krause, who must fight his own self doubts and personal demons as he leads a convoy of Allied ships against German U-boats to prove that he belongs in command. ...

Top Stories: iOS 14 Public Beta, iPhone 12 Size Comparison, 14-Inch MacBook Pro Rumors

Saturday July 11, 2020 6:00 am PDT by
After one round of developer beta testing, Apple unleashed iOS and iPadOS 14 to a wider audience this week, opening it up to members of the public beta program. There are lots of changes and new features to check out, but as with any beta, be careful about installing it on your main devices. Subscribe to the MacRumors YouTube channel for more videos. Other major stories this week included our ...

Hands-On With tvOS 14: Picture in Picture, 4K YouTube, HomeKit and More

Thursday July 9, 2020 12:48 pm PDT by
Apple at WWDC introduced a new version of tvOS, the software that's designed to run on the fourth and fifth-generation Apple TV models. tvOS updates are often more minor in scale than iOS, watchOS, and macOS updates, but tvOS 14 has some useful new features. Subscribe to the MacRumors YouTube channel for more videos. Apple in tvOS 13 introduced a Picture in Picture option for the Apple TV...

Apple CEO Tim Cook's 2019 Compensation Totaled Over $133 Million

Friday July 10, 2020 12:01 pm PDT by
Apple CEO Tim Cook was the second highest paid CEO in the United States in 2019, according to Bloomberg's list of the highest paid CEOs and executives in 2019. Cook received compensation totaling $133,727,869 by Bloomberg's count. Almost all of Cook's compensation was provided in the form of stock awards and related performance bonuses. As reported by the SEC earlier this year, Cook received ...