The Hash-based Message Authentication Code (HMAC) provider in Java on Apple Mac OS X 10.4.11, 10.5.4, and 10.5.5 uses an uninitialized variable, which allows remote attackers to execute arbitrary code via a crafted applet, related to an "error checking issue."
https://exchange.xforce.ibmcloud.com/vulnerabilities/45396
https://euvd.enisa.europa.eu/vulnerability/EUVD-2008-3623
http://www.securitytracker.com/id?1020943
http://www.securityfocus.com/bid/31379
http://support.apple.com/kb/HT3179
http://support.apple.com/kb/HT3178
http://secunia.com/advisories/32018
http://lists.apple.com/archives/security-announce//2008/Sep/msg00008.html
http://lists.apple.com/archives/security-announce//2008/Sep/msg00007.html