iPhone OS 3.1.3 Update Includes 5 Security Fixes

So, what’s new with iPhone OS 3.1.3? The update info says:

– Improved reported battery level on the iPhone 3GS (only)
– Fix for 3rd party apps not launching
– Fix for crashing when using Japanese Kana keyboard

Is there anything else? If you take a look at the security aspect, there’s quite a lot reported in this Apple support note:

About the security content of iPhone OS 3.1.3 and iPhone OS 3.1.3 for iPod touch

1. Core Audio
Impact: Playing a maliciously crafted mp4 audio file may lead to an unexpected application termination or arbitrary code execution

Description: A buffer overflow exists in the handling of mp4 audio files.

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