Apple today released a security update for the iPhone and the iPod touch. Numbered 1.1.2 for both devices, this update protects against the poetic “maliciously crafted TIFF image may lead to an unexpected application termination or arbitrary code execution.”
Since you can only update the iPhone and iPod touch from iTunes, and since iTunes only checks for updates weekly, you should connect your device and click the Check Now button on the device’s settings screen. This will tell iTunes to check for an update right away so you can be safe.
