curl: curl_easy_header runs at O(N) or worse and can be abused to use minute(s) of CPU time

Summary: The implementation of curleasyheader can be abused by a malicious server that puts all headers under a single key. Imagine a server response like: HTTP/1.1 200 OK a: a: a: a: repeat until MAXHTTPRESPHEADERSIZE bytes are used As a developer, if you want to loop through the headers you do...