The XML parsing code in Sun Java Runtime Environment JDK and JRE 6 Update 3 and earlier processes external entity references even when the "external general entities" property is false, which allows remote attackers to conduct XML external entity (XXE) attacks and cause a denial of service or access restricted resources.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9847
http://www.vupen.com/english/advisories/2008/1252
http://www.vupen.com/english/advisories/2008/0371
http://www.securitytracker.com/id?1019292
http://www.securityfocus.com/bid/27553
http://www.securityfocus.com/archive/1/487434/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2008-0245.html
http://www.gentoo.org/security/en/glsa/glsa-200806-11.xml
http://www.gentoo.org/security/en/glsa/glsa-200804-20.xml
http://sunsolve.sun.com/search/document.do?assetkey=1-66-231246-1
http://securityreason.com/securityalert/3621
http://security.gentoo.org/glsa/glsa-200804-28.xml
http://secunia.com/advisories/30780
http://secunia.com/advisories/29858
http://secunia.com/advisories/29841
http://secunia.com/advisories/28746