CVE-2011-3453
Integer overflow in libresolv in Apple Mac OS X before 10.7.3 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption and application crash) via crafted DNS data.
Date published : 2012-02-02
http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html
http://lists.apple.com/archives/security-announce/2012/Mar/msg00001.html