yaSSL 1.7.5 and earlier, as used in MySQL and possibly other products, allows remote attackers to cause a denial of service (crash) via a Hello packet containing a large size value, which triggers a buffer over-read in the HASHwithTransform::Update function in hash.cpp.
https://exchange.xforce.ibmcloud.com/vulnerabilities/39433
http://www.vupen.com/english/advisories/2008/2780
http://www.vupen.com/english/advisories/2008/0560/references
http://www.ubuntu.com/usn/usn-588-1
http://www.securityfocus.com/bid/31681
http://www.securityfocus.com/archive/1/485810/100/0/threaded
http://www.mandriva.com/security/advisories?name=MDVSA-2008:150
http://www.debian.org/security/2008/dsa-1478
http://support.apple.com/kb/HT3216
http://securityreason.com/securityalert/3531
http://secunia.com/advisories/32222
http://secunia.com/advisories/29443
http://secunia.com/advisories/28597
http://secunia.com/advisories/28324
http://lists.apple.com/archives/security-announce/2008/Oct/msg00001.html