The Sun Java Plugin capability in Java 2 Runtime Environment (JRE) 1.4.2_01, 1.4.2_04, and possibly earlier versions, does not properly restrict access between Javascript and Java applets during data transfer, which allows remote attackers to load unsafe classes and execute arbitrary code by using the reflection API to access private Java packages.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5674
https://exchange.xforce.ibmcloud.com/vulnerabilities/18188
http://www.vupen.com/english/advisories/2008/0599
http://www.securityfocus.com/bid/12317
http://www.kb.cert.org/vuls/id/760344
http://www.idefense.com/application/poi/display?id=158&type=vulnerabilities
http://www-1.ibm.com/support/docview.wss?uid=swg21257249
http://sunsolve.sun.com/search/document.do?assetkey=1-26-57591-1
http://sunsolve.sun.com/search/document.do?assetkey=1-26-101523-1
http://securityreason.com/securityalert/61
http://secunia.com/advisories/29035
http://secunia.com/advisories/13271
http://lists.apple.com/archives/security-announce/2005/Feb/msg00000.html