Apple today updated it iTunes music software to version 7.4, mostly to provide support for new iPods, but also to fix a security issue. This fix, for both Mac OS X and Windows, protects against an exploit where album cover art could lead to crashes or “arbitrary code execution”. As always, update iTunes from Software Update (if you’re on a Mac), or by choosing iTunes > Check for Updates, on Windows.
More information about this security fix is avaliable on this Apple web page.
