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.
This is generally found in proxies, firewalls, anti-virus software, and other intermediary devices that monitor, allow, deny, or modify traffic based on how the client or server is expected to behave.
| Nature | Mapping | Type | ID | Name |
|---|---|---|---|---|
| ChildOf | Discouraged | P | 435 | Improper Interaction Between Multiple Correctly-Behaving Entities |
| ParentOf | Allowed | V | 113 | Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting') |
| ParentOf | Allowed | B | 115 | Misinterpretation of Input |
| ParentOf | Allowed | B | 351 | Insufficient Type Distinction |
| ParentOf | Allowed | B | 434 | Unrestricted Upload of File with Dangerous Type |
| ParentOf | Allowed | B | 437 | Incomplete Model of Endpoint Features |
| ParentOf | Allowed | B | 444 | Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') |
| ParentOf | Allowed | V | 626 | Null Byte Interaction Error (Poison Null Byte) |
| ParentOf | Allowed | V | 650 | Trusting HTTP Permission Methods on the Server Side |
| ParentOf | Allowed | V | 86 | Improper Neutralization of Invalid Characters in Identifiers in Web Pages |
| Nature | Mapping | Type | ID | Name |
|---|---|---|---|---|
| MemberOf | Prohibited | C | 957 | SFP Secondary Cluster: Protocol Error |
| MemberOf | Prohibited | V | 1003 | Weaknesses for Simplified Mapping of Published Vulnerabilities |
| MemberOf | Prohibited | C | 1398 | Comprehensive Categorization: Component Interaction |
| Nature | Mapping | Type | ID | Name |
|---|---|---|---|---|
| MemberOf | Prohibited | BS | BOSS-294 | Not Language-Specific Weaknesses |
| MemberOf | Prohibited | BS | BOSS-315 | Unexpected State (impact) |
| MemberOf | Prohibited | BS | BOSS-326 | Varies by Context (impact) |
| Nature | Mapping | Type | ID | Name |
|---|---|---|---|---|
| MemberOf | Prohibited | C | 957 | SFP Secondary Cluster: Protocol Error |
| Scope | Likelihood | Impact | Note |
|---|---|---|---|
| IntegrityOther | N/A | Unexpected StateVaries by Context | N/A |
N/A
N/A
The paper "Insertion, Evasion, and Denial of Service: Eluding Network Intrusion Detection" [REF-428] shows that OSes varied widely in how they manage unusual packets, which made it difficult or impossible for intrusion detection systems to properly detect certain attacker manipulations that took advantage of these OS differences.
Null characters have different interpretations in Perl and C, which have security consequences when Perl invokes C functions. Similar problems have been reported in ASP [REF-429] and PHP.
| Reference | Description |
|---|---|
| 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. |
| Ordinality | Description |
|---|
This CWE entry is a Class and might have Base-level children that would be more appropriate
Examine children of this entry to see if there is a better fit
| Taxonomy Name | Entry ID | Fit | Entry Name |
|---|---|---|---|
| PLOVER | N/A | N/A | Multiple Interpretation Error (MIE) |
| WASC | 27 | N/A | HTTP Response Smuggling |