Not ideal.

This appears to be fixed as of April (at least for Apache). [0].

[0] - https://github.com/nginx/nginx/commit/365694160a85229a7cb006...

> We disclosed to Apache on May 27, and Stefan Eissing fixed it on the same day by making cookie headers count against LimitRequestFields.

I was about to say, the bug here isn't in the protocol, it's that memory use isn't being counted & limited as it should... and, yeah.

I'm a bit surprised this happened to Apache, though. APR uses pool allocators. That should be easy enough to track and limit...

After reading the article, I can conclude that Codex discovered nothing new.

This is already something that is known, and if you're able to be targeted by this (which is not the majority of users) configure your httpd differently.

Couldn’t simple fuzzing have found this?