CVE-2009-3376 Information

Description

Mozilla Firefox before 3.0.15 and 3.5.x before 3.5.4 and SeaMonkey before 2.0 does not properly handle a right-to-left override (aka RLO or U+202E) Unicode character in a download filename which allows remote attackers to spoof file extensions via a crafted filename as demonstrated by displaying a non-executable extension for an executable file.

Reference

http://lists.opensuse.org/opensuse-security-announce/2010-06/msg00001.html http://secunia.com/advisories/38977 http://sunsolve.sun.com/search/document.do?assetkey=1-26-272909-1 http://www.mandriva.com/security/advisories?name=MDVSA-2009:294 http://www.mozilla.org/security/announce/2009/mfsa2009-62.html http://www.redhat.com/support/errata/RHSA-2010-0153.html http://www.redhat.com/support/errata/RHSA-2010-0154.html http://www.ubuntu.com/usn/USN-915-1 http://www.vupen.com/english/advisories/2009/3334 http://www.vupen.com/english/advisories/2010/0648 http://www.vupen.com/english/advisories/2010/0650 https://bugzilla.mozilla.org/show_bug.cgi?id=511521 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A11218 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A6541