Apple Releases iOS 4.3.5, Fixes Certificate Chain Validation Issue

Mac OS X maker Apple has dished out iOS 4.3.5 for the iPhone and the iPad to fix certain security issues.

The update comes a short while after Apple released a security patch to fix a vulnerability that allowed jailbreak of iOS devices.

Apple said that the update was related to certificate chain validation and advised all users to upgrade to the new versions. The update can be downloaded via iTunes and users will have to connect their devices to PCs for installing it.

“A certificate chain validation issue existed in the handling of X.509 certificates. An attacker with a privileged network position may capture or modify data in sessions protected by SSL/TLS. Other attacks involving X.509 certificate validation may also be possible. This issue is addressed through improved validation of X.509 certificate chains,” Apple’s description of the vulnerability read.

The update comes as iOS device users the world over are eagerly waiting for Apple to launch iOS 5, which was unveiled during the World Wide Developer Conference.

The iPhone Dev Team (the hacking group), on the other hand, claim that the Redsn0w jailbreak tool continues to work on iOS devices even after installing the 4.3.5 update.