Mail in Apple Mac OS X before 10.5, when an IPv6 SMTP server is used, does not properly initialize memory, which might allow remote attackers to execute arbitrary code or cause a denial of service (application crash), or obtain sensitive information (memory contents) in opportunistic circumstances, by sending an e-mail message.
https://exchange.xforce.ibmcloud.com/vulnerabilities/42723
http://www.vupen.com/english/advisories/2008/1697
http://www.us-cert.gov/cas/techalerts/TA08-150A.html
http://www.securityfocus.com/bid/29500
http://www.securityfocus.com/bid/29412
http://securitytracker.com/id?1020140
http://secunia.com/advisories/30430
http://lists.apple.com/archives/security-announce/2008//May/msg00001.html