I0n1c Explains How His iOS 7.1.1 Jailbreak Works

Stefan Esser, a hacker known as i0n1c, has posted an explanation of how his jailbreak of iOS 7.1.1 works.
The jailbreak, which has not yet been released, is unique in that it uses a kernel bug which is hidden inside functionality that can be easily reached, even from within the iOS application sandbox.

 



 

 
This means that the exploit code can be used to break out of any application that you exploit. This is very different from nearly all of the kernel vulnerabilities used in iOS jailbreaks since iOS 4. There have been only 2 publicly disclosed vulnerabilities that had this power. The first has been used in comex's JailbreakMe3 and the other one is the posix_spawn() vulnerability disclosed by SektionEins during SyScan 2013 and later used by the jailbreak community in the p0sixpwn jailbreak.

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