Does iOS 15.4 also support jailbreaking? No, but it is said that the kernel PoC code released yesterday iOS 15.4 beta 3 system is also suitable, it is suspected that it supports jailbreaking instead of the official version, because in the internal beta version, Apple did not fix this vulnerability, and the iPhone 12/13 also supports mask unlocking.
note! It is not that the vulnerability supports iOS 15.4 official jailbreaking, nor does it mean that the jailbreak tool is about to be released, but it is just that iOS 15.4 beta 3 The vulnerability is effectively exploited, but it is not sure whether jailbreaking is supported, and the lower version of the system does not recommend upgrading, again, it is not recommended to upgrade.
To recap, the new vulnerability was mentioned yesterday, according to Jaakerblom security researchers revealed that iOS 15.4 fixes the kernel vulnerability introduced in iOS 15.0 beta, and this vulnerability supports effective exploitation of iOS 15.0 - 15.3.1 systems and get root privileges.
Subsequently, Synackiv released this PoC code on Twitter, and the system affected by this code is iOS 15.0 - 15.3.1, which means that the device can be exploited through this code, but it is uncertain whether it will be used for jailbreaking, and it remains to be seen.
then! I tested against the PoC code he provided and the results were:
- iPhone 7Plus iOS 15.1 (Active)
- iPhone 12 Pro Max 15.3.1 (Active)
- iPhone 13 Pro Max 15.3.1 (active)
note! Vulnerability code support, not necessarily jailbreak support, just hopeful.
Test renderings:
As can be seen from the following figure, when the PoC application is opened, the device crashes and restarts instantly, which means that it is effectively exploited, and at the same time, it can be seen in the Panic log that there is indeed a kernel crash problem, and even mentions a vulnerability attack.
After knowing the above news, I never expected that the vulnerability was actually not fixed in the iOS 15.4 beta 1 - 3 beta version, and then! I upgraded my iPhone 12 Pro Max device to an iOS 15.4 beta 3 internal beta system for testing, and it really worked.
But! It is not recommended to upgrade to the iOS 15.4 beta 3 system in the early version, after all, it has not yet been determined whether jailbreaking is supported, and the key iOS 15.2 - 15.4 system jailbreak will be more difficult, more difficult than the iOS 15.0 - 15.1.1 system, as mentioned by CoolStar Jailbreak God before.
If you're an iPhone 12 series device and already on iOS 15.4 and want to take that risk, you can downgrade to iOS 15.4 beta 3 now and get the system update package in the new Fun Toolbox applet.
The above is about the new vulnerability of iOS 15.2 - 15.4 beta 3, about the progress of iOS 15.0 - 15.1.1 system jailbreak, just coolStar jailbreak god for the libhooker substrate update, the launch of version 1.6.9.
Libhooker 1.6.9 Board Update:
- Added initial support for iOS 15
- Added support for tweaks to make lbhoker itself hooked
- Adds support for hooking more system methods
It seems that CoolStar jailbreak god for iOS 15.0 - 15.1.1 system jailbreak, seems to be very smooth, do you think CoolStar first released iOS 15 jailbreak, or Pwn20wnd jailbreak god released first! Let's wait and see!
Probably that's it, that said! Are you looking forward to the release of the iOS 15 System Jailbreak Tool? Please comment.