Heap-based buffer overflow in ImageIO in Apple Safari before 5.0.6 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted TIFF image with CCITT Group 4 encoding.
http://support.apple.com/kb/HT5281
http://support.apple.com/kb/HT5130
http://support.apple.com/kb/HT5001
http://support.apple.com/kb/HT4999
http://support.apple.com/kb/HT4808
http://lists.apple.com/archives/security-announce/2012/May/msg00001.html
http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html
http://lists.apple.com/archives/security-announce/2011//Jul/msg00002.html
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00002.html
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00001.html