updated 03:05 pm EST, Wed March 9, 2011
iOS update copes with Safari, networking flaws
The new iOS 4.3 and Apple TV 4.2 updates address a host of security vulnerabilities, official notes show. The majority of the fixes are associated with v4.3, and in particular Safari and/or its underlying WebKit rendering engine; Apple remarks for example that in iOS 4.2.1, clearing cookies sometimes has no effect. The v4.3 update also copes with vulnerabilities in FreeType, TIFF images, libxml, Wi-Fi networking and the handling of IPv6 addresses.
The Apple TV update is similar in character, owing to the fact that the firmware is technically a variant of iOS. Patches carried over from iOS 4.3 target FreeType, TIFF files, IPv6 and Wi-Fi. Apple mentions that while an Apple TV will periodically check for updates, people wanting to force the set-top to check can find the option within the General category under Settings.