Integer overflow in Apple CoreGraphics, as used in Safari before 4.0.3, Mozilla Firefox before 3.0.12, and Mac OS X 10.4.11 and 10.5.8, allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a long text run that triggers a heap-based buffer overflow during font glyph rendering, a related issue to CVE-2009-1194.
https://bugzilla.mozilla.org/show_bug.cgi?id=480134
http://www.vupen.com/english/advisories/2009/1972
http://www.securitytracker.com/id?1022717
http://www.securityfocus.com/bid/35758
http://www.mozilla.org/security/announce/2009/mfsa2009-36.html
http://support.apple.com/kb/HT3865
http://support.apple.com/kb/HT3733
http://sunsolve.sun.com/search/document.do?assetkey=1-66-264308-1
http://secunia.com/advisories/36701
http://secunia.com/advisories/35914
http://lists.apple.com/archives/security-announce/2009/Sep/msg00004.html
http://lists.apple.com/archives/security-announce/2009/Aug/msg00002.html