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Back in September security researcher Ian Beer announced on Twitter that he will publicize the found iOS 11.4/11.4.1 Exploits. His focus has shifted to iOS 12 where he is now looking for new exploits. Now his exploits are available to the public!
Exploits are mandatory to develop a new jailbreak for a specific iOS version. To make a jailbreak it needs quite a few things for example you need read and write access and ensure that the exploits are executed at the correct position in the code. A combination of a few exploits is often the key to success.
The exploits from Ian Beer are only something like a “Proof of Concept” (PoC) because there is manual for developers on how they can be used effectively. Another problem with the found exploit is that the require root privileges. To get these root access (which is not quite so easy) there is another exploit that can be used for this. For example the one found by bazad. And there is already the next problem: The exploits from Ian Beer work on iOS 11.4 and iOS 11.4.1 but the root exploit from bazad only works with iOS 11.4.
Now it is up to the developers to find more exploits to build a jailbreak for iOS 11.4/11.4.1. Even if the chances for a jailbreak are not so high right not the exploits from Ian are a first bright spot.
The three iOS 11.4/iOS 11.4.1 exploits from Ian Beer
If you want to take a closer look at the exploits you can find them here: