Provide references for CVE-2012-5689.
Where can I find more information about CVE-2012-5689?
References are available at: https://kb.isc.org/article/AA-00855/, http://www.isc.org/software/bind/advisories/cve-2012-5689, http://www.ubuntu.com/usn/USN-2693-1, http://rhn.redhat.com/errata/RHSA-2013-0550.html.