[FREEBSD:660EBBF5-DAEB-11E5-B2BD-002590263BF5] squid -- remote DoS in HTTP response processing

Squid security advisory 2016:2 reports:

  Due to incorrect bounds checking Squid is vulnerable to a denial
    of service attack when processing HTTP responses.
  These problems allow remote servers delivering certain unusual
    HTTP response syntax to trigger a denial of service for all
    clients accessing the Squid service.
  HTTP responses containing malformed headers that trigger this
    issue are becoming common. We are not certain at this time if
    that is a sign of malware or just broken server scripting.