Apple has released iOS 4.3.4 for iPhone,iPad,iPod Touch and iOS 4.2.9 for Verizon CDMA iPhone to fix JailbreakMe 3.0 of Comex.
iOS 4.3.4 supports iPhone 3GS,iPhone 4 , iPad 2,iPad 1,iPod Touch 3G and iPod Touch 4G.
iOS 4.3.4 update will fix PDF exploit found in Mobile Safari which is same as JailbreakMe 3.0.The vulnerability found in iOS could lead to installing malware for distribution of malicious content.
With the release of iOS 4.3.4 Apple has closed doors for untethered jailbreak of iOS.
Apple has released a document which supports the fact that exploit JailbreakMe 3.0 has been patched-
Impact: Viewing a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution
Description: A buffer overflow exists in FreeType’s handling of TrueType fonts. Viewing a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution.
Jailbreakers are being advised to backup SHSH blobs using TinyUmbrella.
Download iOS 4.3.4 (Direct Links)
Download iOS 4.2.9 (Direct Link)
As usual jailbreakers should avoid updating to iOS 4.3.4.