GHSA-753J-MPMX-QQ6G Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') in tornado

Summary 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. PoC 0. Install Tornado. 1. Start a simple Tornado server that echoes...

The vulnerability of the Apsis Pound proxy server, related to HTTP request processing flaws, allows attackers to send hidden HTTP requests (HTTP Request Smuggling attack).

The vulnerability of the Apsis Pound proxy server is related to HTTP request processing flaws. Exploiting this vulnerability allows a malicious actor to send hidden HTTP requests remotely, using specially crafted headers for such attacks...