Apple has released a new version of iOS, which is iOS 4.3.4 (and 4.2.9 in the case of Verizon iPhone). With the help of this version, the vulnerability regarding the malicious PDF files corrupting the system is removed. Apple implies that a fix is being applied, which will prevent the execution of arbitrary code when crafted PDF is opened on your device but there is a catch, before you decide to update your iPhone with this latest version of iOS remember that your jailbreak won’t work any further.
The new iOS update is now available for iPhone 3GS and iPhone 4 which are running on iOS 3.0 or higher, on 3rd generation iPods (running on iOS 3.1 or higher), and iPads with iOS 3.2 or higher. Apple’s iOS 4.3.4 update has fixed the vulnerability in the CoreGraphics framework, which created problems relating to the way PDF files were handled. Hackers could have remote controlled the iDevices after tricking the user into opening a malicious PDF file. The flaw was first uncovered by ‘Comex’ , member of a hacking team as named by iPhone Dev team. ‘Comex’ using this flaw created a loophole to jailbreak the iOS.
The update targets three components of the iOS: buffer overflow in Free Type’s handling of True Type fonts; signature issue in Free Type’s handling of Type1 fonts; and invalid type conversion issue in use of IOMobile Frame Buffer queuing primitives. ‘Comex’ had earlier brought out ‘JailbreakMe 2.0’ aimed at iPhone 4. Apple prevented the hack by launching another similar iOS update (4.3.3 update).
For all the Jailbreak fans who are disappointed at the latest update of the iOS need not do so. Just after 12 hours of the release, a poster appeared at the Redmond Pie which claims to have certain ‘PwnageTool 4.3.3’ a bundle that will unlock your iDevice. We will get you an update on this as soon as we get our hands on it.