Integer underflow in QuickDraw Manager in Apple Mac OS X 10.4.11 and 10.5 before 10.5.7 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted PICT image that triggers a heap-based buffer overflow.

More... (http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2009-0010)