Apple QuickTime before 7.4.5 enables deserialization of QTJava objects by untrusted Java applets, which allows remote attackers to execute arbitrary code via a crafted applet.
https://exchange.xforce.ibmcloud.com/vulnerabilities/41601
http://www.vupen.com/english/advisories/2008/1078
http://www.us-cert.gov/cas/techalerts/TA08-094A.html
http://www.securityfocus.com/bid/28583
http://support.apple.com/kb/HT1241