Varnish 2.1.5, 3.0.3 DoS in http_GetHdr() while parsing Vary header

httpGetHdr | l == strlenhdr + 1 Authors: 22733db72ab3ed94b5f8a1ffcde850251fe6f466 c8e74ebd8392fda4788179f9a02bb49337638e7b AKAT-1 Versions: 3.0.3, 2.1.5 Summary: It's possible to crash Varnish via assertion if the single header within the Vary header is longer then 127 bytes. The 'l' cachehttp.c2...