SafeUM
Home Blog Services Download Help About Recharge

Axarhöfði 14, 110 Reykjavik, Iceland

Iceland - 2015
SafeUM
Blog
Services
Download
Help
About
Recharge
Menu
Archive
TOP Security!
13 Dec 2017

Google Project Zero 'tpf0' exploit whets appetite for iOS 11 jailbreak

Google's Project Zero iOS bug hunter Ian Beer has released details about an iOS 11 exploit that could offer up a jailbreak for iOS 11.1.2.

Beer last week teased that he had an exploit called 'tfp0', which is short for the kernel task port in iOS, and has today followed with an exploit using two recently patched flaws that may offer the rare prospect of a possible jailbreak on iOS.

It appears what he has released isn't a full jailbreak but enough to allow security researchers to bypass software restrictions imposed by Apple and test a newish version of iOS. It may also help create a jailbreak for those interested in testing iOS 11.1.2 or below. Beer published details of an 'async_wake' exploit and proof-of-concept local kernel debugging tool for iOS 11.1.2 on Monday. Apple released iOS 11.2 on December 2, so the tools won't work on updated iPhones.

As detailed in Project Zero's bug repository, the issue Beer found relates to a memory flaw in IOSurface, a kernel extension. Jailbreaking researchers Team Pangu claim to have discovered the same flaw last year and have been using it for jailbreaking an iPhone during internal research.

Beer's release of his exploit came after Team Pangu revealed a proof of concept exploit for one of the iOSurface vulnerabilities he'd reported to Apple. Team Pangu researcher Wang Tielei described iOS 11.2 as a "big loss" as it blocked a kernel vulnerability that could be exploited from within an iOS app sandbox.

Beer's exploit uses a combination of the IOSurface bug, another kernel bug patched in iOS 11.2, and specially crafted kernel messages to get the prized tfp0 on Apple devices. Beer confirmed his technique does work on iPhone 7, iPhone 6s, and iPod Touch 6G if they're running iOS 11.1.2. He notes that it should be simple to port to other models. He also tested it on a MacBookAir 5,2 running MacOS 10.13.

Tags:
iOS information leaks
Source:
ZDNet
1640
Other NEWS
3 Jul 2020 safeum news imgage An encrypted messaging service has been infiltrated by police
4 May 2020 safeum news imgage Two-Factor Authentication ​What Is It and Why You Should Use It
12 Dec 2019 safeum news imgage Encryption is under threat - this is how it affects you
4 Nov 2019 safeum news imgage Should Big Decisions Be Based on Data or Your Intuition?
7 Jun 2018 safeum news imgage VPNFilter malware infecting 500,000 devices is worse than we thought
4 Jun 2018 safeum news imgage Hackers target Booking.com in criminal bid to steal hundreds of thousands from customers
1 Jun 2018 safeum news imgage Operator of World's Top Internet Hub Sues German Spy Agency
30 May 2018 safeum news imgage US says North Korea behind malware attacks
29 May 2018 safeum news imgage Facebook and Google targeted as first GDPR complaints filed
25 May 2018 safeum news imgage A new reason to not buy these cheap Android devices
24 May 2018 safeum news imgage Flaws in smart pet devices, apps could come back to bite owners
23 May 2018 safeum news imgage Google sued for 'clandestine tracking' of 4.4m UK iPhone users' browsing data
21 May 2018 safeum news imgage LocationSmart reportedly leaked phone location data onto the web
18 May 2018 safeum news imgage The SEC created its own scammy ICO to teach investors a lesson
17 May 2018 safeum news imgage Thieves suck millions out of Mexican banks in transfer heist
All news
SafeUM
Confidential Terms of Use Our technologies Company
Follow us
Download
SafeUM © Safe Universal Messenger

Axarhöfði 14,
110 Reykjavik, Iceland

Iceland - 2015