Apple has also published a new knowledge base document, which provides the security content of iOS 8.3.
The knowledge base documents reveals that Apple has also patched quite a few security flaws in iOS 8.3. But we have some news for jailbreakers. Apple has also credited “TaiG Jailbreak Team” for discovering the security flaw in the “Backup” system.
Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later
Impact: An attacker may be able to use the backup system to access restricted areas of the file system
Description: An issue existed in the relative path evaluation logic of the backup system. This issues was addressed through improved path evaluation.
CVE-2015-1087 : TaiG Jailbreak Team
We are assuming that this vulnerability was used by the TaiG team in the iOS 8.1.1 – iOS 8.1.2 jailbreak. Apple had patched several security vulnerabilities in iOS 8.1.3 which had killed the TaiG jailbreak and PP Jailbreak. So now we are not seeing iOS 8.3 jailbreak very soon 🙁
TaiG team has said that they’re working on a jailbreak for iOS 8.2, and probably a jailbreak for iOS 8.3 with today’s release. It is not clear what impact the patching of the security vulnerability in the backup system used by the TaiG team will have on the iOS 8.3 jailbreak.
This is another reason why jailbreakers on iOS 8.1.2 or lower should avoid upgrading to iOS 8.3 and be extremely careful while installing jailbreak tweaks or messing around with the file system.