Mozilla allows remote attackers to cause Mozilla to open a URI as a different MIME type than expected via a null character (%00) in an FTP URI.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1227
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11090
https://exchange.xforce.ibmcloud.com/vulnerabilities/16691
http://www.securityfocus.com/bid/15495
http://www.redhat.com/support/errata/RHSA-2004-421.html
http://www.novell.com/linux/security/advisories/2004_36_mozilla.html