Does QuickTime pose a security risk?

The whole QuickTime/MySpace security hole that was discussed this week on TUAW has given rise to a general concern about QuickTime's vulnerabilities. The QuickTime bug apparently allowed a worm to infect MySpace user profiles and redirected traffic to a phishing site, where passwords were harvested.

An Information Week article suggests the security flaw could extend well beyond Myspace to both Mac and Windows users. The problem seems to stem from QuickTime's JavaScript support and a bug that allows malicious JavaScript code to affect browsers. The article states that although Apple has provided an Internet Explorer patch, it has yet to issue a general QuickTime fix across all platforms.