Integer underflow in CoreGraphics in Apple Mac OS X 10.5 before 10.5.7, iPhone OS 1.0 through 2.2.1, and iPhone OS for iPod touch 1.1 through 2.2.1 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted PDF file that triggers a heap-based buffer overflow.
lists.apple.com/archives/security-announce/2009/Jun/msg00005.html
lists.apple.com/archives/security-announce/2009/May/msg00002.html
secunia.com/advisories/35074
support.apple.com/kb/HT3549
support.apple.com/kb/HT3639
www.securityfocus.com/bid/34926
www.securitytracker.com/id?1022209
www.us-cert.gov/cas/techalerts/TA09-133A.html
www.vupen.com/english/advisories/2009/1297
www.vupen.com/english/advisories/2009/1621
exchange.xforce.ibmcloud.com/vulnerabilities/50482