Apple has just released the latest
update for iOS 4.0.x (iPhone, iPod touch) and iOS 3.2.x (iPad).
Previous versions of the mobile operating systems had a PDF
vulnerability that was exploited
by the iPhone Dev Team to jailbreak the devices.
The iPhone Dev Team was able to make an
incredibly simple jailbreak (for the end user) that simply required users to visit the
website JailbreakMe.com to
jailbreak their devices. The jailbreak was followed up by a software
unlock which allowed the iPhone 4 to be used on other GSM networks
(in the case of U.S. customers, T-Mobile).
With this security update, that
loophole is obviously closed, so the ball is back in the iPhone Dev
Team's court to find another iOS security hole to expose.