firefox is vulnerable to arbitrary code execution. Several flaws were found in the processing of malformed web content. A web page containing malicious content could cause Firefox to crash or, potentially, execute arbitrary code with the privileges of the user running Firefox.
blogs.sun.com/security/entry/multiple_vulnerabilities_in_mozilla_firefox
lists.opensuse.org/opensuse-security-announce/2010-10/msg00002.html
secunia.com/advisories/42867
support.avaya.com/css/P8/documents/100112690
www.mandriva.com/security/advisories?name=MDVSA-2010:173
www.mozilla.org/security/announce/2010/mfsa2010-59.html
www.mozilla.org/security/known-vulnerabilities/firefox36.html#firefox3.6.9
www.redhat.com/security/updates/classification/#critical
www.securityfocus.com/bid/43092
www.vupen.com/english/advisories/2010/2323
www.vupen.com/english/advisories/2011/0061
access.redhat.com/errata/RHSA-2010:0681
bugzilla.mozilla.org/show_bug.cgi?id=584180
exchange.xforce.ibmcloud.com/vulnerabilities/61656
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11492