Description (CNA)
Tornado before 6.4.1 ignores duplicate Transfer-Encoding: chunked headers, treating requests as having no message body and parsing the chunked body as a subsequent request. Attackers can exploit this inconsistency when Tornado is deployed behind proxies to perform HTTP request smuggling, enabling access control bypass, cache poisoning, or connection desynchronization.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| tornadoweb / tornado | affected 0 before 6.4.1; unaffected 6.4.1 |
CWE
CWE-444
References
- https://github.com/tornadoweb/tornado/security/advisories/GHSA-753j-mpmx-qq6g
- https://www.vulncheck.com/advisories/tornado-before-6.4.1-http-request-smuggling-via-transfer-encoding
ADP enrichment
No English description supplied.