CVE-2024-45614 Header normalization allows for client to clobber proxy set headers in Puma

Puma is a Ruby/Rack web server built for parallelism. In affected versions clients could clobber values set by intermediate proxies such as X-Forwarded-For by providing a underscore version of the same header X-ForwardedFor. Any users relying on proxy set variables is affected. v6.4.3/v5.6.9 now...