Provide references for CVE-2016-6172.
Where can I find more information about CVE-2016-6172?
References are available at: https://doc.powerdns.com/md/changelog/#powerdns-authoritative-server-401, http://www.debian.org/security/2016/dsa-3664, http://www.securitytracker.com/id/1036242, http://www.openwall.com/lists/oss-security/2016/07/06/3, https://github.com/PowerDNS/pdns/issues/4128, https://github.com/PowerDNS/pdns/issues/4133, http://www.securityfocus.com/bid/91678, https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015058.html, https://github.com/PowerDNS/pdns/pull/4134, http://lists.opensuse.org/opensuse-updates/2016-08/msg00085.html, https://github.com/sischkg/xfer-limit/blob/master/README.md.