libsoup: HTTP request smuggling via stripping null bytes from the ends of header names

A flaw was found in the Libsoup library. When Libsoup parses HTTP headers, it ignores null bytes at the end of header names. Thus, Transfer-Encoding: chunked is equivalent to Transfer-Encoding\x00: chunked. This issue allows request smuggling when Libsoup is used in a service behind a reverse pro...