Provide references for CVE-2011-4868.
Where can I find more information about CVE-2011-4868?
References are available at: https://kb.isc.org/article/AA-00705, https://www.isc.org/software/dhcp/advisories/cve-2011-4868, https://deepthought.isc.org/article/AA-00595, http://security.gentoo.org/glsa/glsa-201301-06.xml.