As often after a minor update, the hacker MuscleNerd (known to belong to the evad3rs team) advises jailbreakers to stay away from iOS 8.1.3. It must be said that this recommendation seems justified on reading the thirty security fixes accompanying iOS 8.1.3.
Among these fixes, there are several references to patches for flaws discovered by the TaiG team, not to mention a vulnerability affecting the core of iOS and identified by the Pangu team as well as Stefan Esser who is otherwise known by his pseudonym from hacker i0n1c.
Suffice to say that this suggests that the apple firm has had a heavy hand and has massively ended the exploits used in untethered jailbreak tools, whether Pangu8, TaiG or even the recent PP jailbreak. Via the Chinese microblogging site Weibo, a member of the TaiG team confirms that jailbreakers should not be upgraded to iOS 8.1.3.
Recall that the Pangu team offers the Pangu8 tool (on Windows and OS X) for the jailbreak of iOS 8.0 to 8.1.0. To be able to unroll terminals under iOS 8.1.1 and 8.1.2, the TaiG team offers a dedicated tool available in a Windows version. The PP jailbreak (for iOS 8.0 to 8.1.2) is available in a version for OS X.
Via Twitter, i0n1c is caustic. He underlines the correction by Apple of vulnerabilities which he had disclosed during training at the end of 2013. He also points to the discovery of a flaw in the core attributed to the TaiG team but which would be his own find, moreover, already used by the Pangu team in June 2014.
So Apple credits TaiG for my mach_port_kobject () bug that was also used by Pangu in June 2014 months before the TaiG jailbreak.
– Stefan Esser (@ i0n1c) January 27, 2015
i0n1c believes that Bug Bounty programs are the only way to motivate hackers to find security bugs. A message barely veiled towards Apple to consider compensation for such discoverers …
For the jailbreakers who hastily yielded to iOS 8.1.3 and now regret it, a restoration to iOS 8.1.2 remains possible as long as this version is signed by Apple. But it won't last forever.