CWE WEAKNESSES / CWE-430
CWE-430
Deployment of Wrong Handler
Base
What it is
The wrong "handler" is assigned to process an object.
An example of deploying the wrong handler would be calling a servlet to reveal source code of a .JSP file, or automatically "determining" type of the object even if it is contradictory to an explicitly specified type.
Impact
| Integrity, Other | Varies by Context, Unexpected State |
Mitigations
- [Architecture and Design] Perform a type check before interpreting an object.
- [Architecture and Design] Reject any inconsistent types, such as a file with a .GIF extension that appears to consist of PHP code.
Real-world CVE examples
- CVE-2001-0004 — Source code disclosure via manipulated file extension that causes parsing by wrong DLL.
- CVE-2002-0025 — Web browser does not properly handle the Content-Type header field, causing a different application to process the document.
- CVE-2000-1052 — Source code disclosure by directly invoking a servlet.
- CVE-2002-1742 — Arbitrary Perl functions can be loaded by calling a non-existent function that activates a handler.
Related weaknesses
Test & detect
Browse all common weaknesses, check related exploited CVEs, or map to ATT&CK techniques.
Source: MITRE CWE. View on cwe.mitre.org →