GHSA-753j-mpmx-qq6g: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') in tornado

June 6, 2024

When Tornado receives a request with two Transfer-Encoding: chunked headers, it ignores them both. This enables request smuggling when Tornado is deployed behind a proxy server that emits such requests. Pound does this.

References

github.com/advisories/GHSA-753j-mpmx-qq6g
github.com/tornadoweb/tornado
github.com/tornadoweb/tornado/commit/d65f6e71a77f53a1ff0a0dc55704be13f04eb572
github.com/tornadoweb/tornado/security/advisories/GHSA-753j-mpmx-qq6g

Code Behaviors & Features

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