The remote FreeBSD host is missing a security-related update.
Privoxy Developers reports : Prevent invalid reads in case of corrupt chunk-encoded content. CVE-2016-1982. Bug discovered with afl-fuzz and AddressSanitizer. Remove empty Host headers in client requests. Previously they would result in invalid reads. CVE-2016-1983. Bug discovered with afl-fuzz and AddressSanitizer.