content/html/document/src/nsHTMLDocument.cpp in Mozilla Firefox 3.0.x before 3.0.15 and 3.5.x before 3.5.4 allows user-assisted remote attackers to bypass the Same Origin Policy and read an arbitrary content selection via the document.getSelection function.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5935
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10440
https://bugzilla.mozilla.org/show_bug.cgi?id=503226
http://www.vupen.com/english/advisories/2009/3334
http://www.mozilla.org/security/announce/2009/mfsa2009-61.html
http://www.mandriva.com/security/advisories?name=MDVSA-2009:294
http://sunsolve.sun.com/search/document.do?assetkey=1-26-272909-1