Mozilla Firefox 3.5.x before 3.5.10 and 3.6.x before 3.6.4, and SeaMonkey before 2.0.5, does not properly handle situations in which both "Content-Disposition: attachment" and "Content-Type: multipart" are present in HTTP headers, which allows remote attackers to conduct cross-site scripting (XSS) attacks via an uploaded HTML document.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14186
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10168
https://exchange.xforce.ibmcloud.com/vulnerabilities/59667
https://bugzilla.mozilla.org/show_bug.cgi?id=537120
http://www.vupen.com/english/advisories/2010/1773
http://www.vupen.com/english/advisories/2010/1640
http://www.vupen.com/english/advisories/2010/1592
http://www.vupen.com/english/advisories/2010/1557
http://www.vupen.com/english/advisories/2010/1556
http://www.vupen.com/english/advisories/2010/1551
http://www.ubuntu.com/usn/usn-930-2
http://www.securitytracker.com/id?1024138
http://www.securityfocus.com/bid/41103
http://www.securityfocus.com/bid/41050
http://www.redhat.com/support/errata/RHSA-2010-0501.html
http://www.redhat.com/support/errata/RHSA-2010-0500.html
http://www.redhat.com/support/errata/RHSA-2010-0499.html
http://www.mozilla.org/security/announce/2010/mfsa2010-32.html
http://www.mandriva.com/security/advisories?name=MDVSA-2010:125
http://ubuntu.com/usn/usn-930-1
http://support.avaya.com/css/P8/documents/100091069
http://secunia.com/advisories/40481
http://secunia.com/advisories/40401
http://secunia.com/advisories/40326
http://lists.opensuse.org/opensuse-security-announce/2010-07/msg00005.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-June/043405.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-June/043369.html