CWE-436 Interpretation Conflict

Product A handles inputs or steps differently than Product B, which causes A to perform incorrect actions based on its perception of B's state.

• Integrity, Other: Unexpected State, Varies by Context

• CVE-2005-1215: Bypass filters or poison web cache using requests with multiple Content-Length headers, a non-standard behavior. • CVE-2002-0485: Anti-virus product allows bypass via Content-Type and Content-Disposition headers that are mixed case, which are still processed by some clients. • CVE-2002-1978: FTP clients sending a command with "PASV" in the argument can cause firewalls to misinterpret the server's error as a valid response, allowing filter bypass. • CVE-2002-1979: FTP clients sending a command with "PASV" in the argument can cause firewalls to misinterpret the server's error as a valid response, allowing filter bypass. • CVE-2002-0637: Virus product bypass with spaces between MIME header fields and the ":" separator, a non-standard message that is accepted by some clients. • CVE-2002-1777: AV product detection bypass using inconsistency manipulation (file extension in MIME Content-Type vs. Content-Disposition field). • CVE-2005-3310: CMS system allows uploads of files with GIF/JPG extensions, but if they contain HTML, Internet Explorer renders them as HTML instead of images. • CVE-2005-4260: Interpretation conflict allows XSS via invalid "<" when a ">" is expected, which is treated as ">" by many web browsers. • CVE-2005-4080: Interpretation conflict (non-standard behavior) enables XSS because browser ignores invalid characters in the middle of tags.