CVE-2024-24791 Information

Description

The net/http HTTP/1.1 client mishandled the case where a server responds to a request with an \Expect: 100-continue\ header with a non-informational (200 or higher) status. This mishandling could leave a client connection in an invalid state where the next request sent on the connection will fail. An attacker sending a request to a net/http/httputil.ReverseProxy proxy can exploit this mishandling to cause a denial of service by sending \Expect: 100-continue\ requests which elicit a non-informational response from the backend. Each such request leaves the proxy with an invalid connection and causes one subsequent request using that connection to fail.

Reference

https://go.dev/cl/591255 https://go.dev/issue/67555 https://groups.google.com/g/golang-dev/c/t0rK-qHBqzY/m/6MMoAZkMAgAJ https://pkg.go.dev/vuln/GO-2024-2963