Integer overflow in CoreGraphics in Apple Mac OS X 10.4 up to 10.4.9 allows remote user-assisted attackers to cause a denial of service (application termination) or execute arbitrary code via a crafted PDF file.
https://exchange.xforce.ibmcloud.com/vulnerabilities/34499
http://www.vupen.com/english/advisories/2007/1939
http://www.securitytracker.com/id?1018114
http://www.securityfocus.com/bid/24144
http://secunia.com/advisories/25402
http://lists.apple.com/archives/security-announce/2007/May/msg00004.html