QT/iTunes security flaw

Secunia published a moderate security advisory relating to Quicktime 7.x and iTunes 6.x.
An error in the headers of a .mov file could make it possible to cause a denial of service and then allow the execution of malicious code.
The only means of protection at the moment is to not open mov files from dubious sources.
http://secunia.com/advisories/18149/