Apple has released iOS 6.1.3 for iPhone (3GS and later), iPad (2nd generation and later) and iPod touch (4th generation and later) devices. The company says that the update offers improvements as well as bug fixes – including code to fix the vulnerability that has been publicly known for over a month and which allowed potential attackers to bypass the code lock in order to access the telephone app, contacts and photos.
According to the security details Apple has released on iOS 6.1.3, the update closes holes that allowed users to execute unsigned code and determine the address of structures in the kernel and allowed users to change permissions on arbitrary files. According to reports, the update corrects at least one hole that is being exploited by the evasi0n jailbreak.
Apple says that iOS 6.1.3 also improves the map material for Japan. Whether the changes go beyond the new additions that have been integrated on the server side remains unclear. At present, the update appears to only be available for direct installation on devices via Wi-Fi networks, and not via mobile networks. The size of the iPhone 5 update is 18MB. iOS 6.1.3 (build 10B329) is being released gradually on different devices; it may not yet be available everywhere.
Apple has also released iOS 5.2.1 for second and third generation Apple TVs, which fixes some of the same issues.