The XPCVariant::VariantDataToJS function in the XPCOM implementation in Mozilla Firefox 3.0.x before 3.0.15 and 3.5.x before 3.5.4 does not enforce intended restrictions on interaction between chrome privileged code and objects obtained from remote web sites, which allows remote attackers to execute arbitrary JavaScript with chrome privileges via unspecified method calls, related to “doubly-wrapped objects.”
sunsolve.sun.com/search/document.do?assetkey=1-26-272909-1
www.mandriva.com/security/advisories?name=MDVSA-2009:294
www.mozilla.org/security/announce/2009/mfsa2009-57.html
www.vupen.com/english/advisories/2009/3334
bugzilla.mozilla.org/show_bug.cgi?id=505988
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6565
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9789