QuickTime for Java on Mac OS X 10.4 through 10.4.8, when used with Quartz Composer, allows remote attackers to obtain sensitive information (screen images) via a Java applet that accesses images that are being rendered by other embedded QuickTime objects.
http://www.vupen.com/english/advisories/2006/5072
http://www.securityfocus.com/bid/21672
http://securitytracker.com/id?1017402
http://secunia.com/advisories/23438
http://lists.apple.com/archives/Security-announce/2006/Dec/msg00000.html