CVE-2024-24791

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.

Notes