The FTP protocol implementation in Mozilla Firefox before 1.5.0.11 and 2.x before 2.0.0.3 allows remote attackers to force the client to connect to other servers, perform a proxied port scan, or obtain sensitive information by specifying an alternate server address in an FTP PASV response.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11431
https://exchange.xforce.ibmcloud.com/vulnerabilities/33119
http://www.vupen.com/english/advisories/2007/1034
http://www.ubuntu.com/usn/usn-443-1
http://www.securitytracker.com/id?1017800
http://www.securityfocus.com/bid/23082
http://www.securityfocus.com/archive/1/470172/100/200/threaded
http://www.securityfocus.com/archive/1/463501/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2007-0402.html
http://www.redhat.com/support/errata/RHSA-2007-0400.html
http://secunia.com/advisories/25858