Another serious zero-day day hole in Windows Media Player 9 and 11 published on the web. Through a prepeared Wav, SND of MIDI file an attacker can take over the OS. Tested on fully patched XP and Vista. POC exploit can be found here: http://www.securitytracker.com/alerts/2008/Dec/1021495.html
The malicious files can be embedded in a website. M$ has not come forward with a reaction to the publication, neither has Jeff Jones. For the moment I use VLC Media Player,