Unspecified vulnerability in Oracle MySQL Server 5.1.62 and earlier, and 5.5.23 and earlier, allows remote authenticated users to affect availability via unknown vectors related to Server Optimizer.
https://exchange.xforce.ibmcloud.com/vulnerabilities/77064
http://www.securityfocus.com/bid/54540
http://www.oracle.com/technetwork/topics/security/cpujul2012-392727.html
http://security.gentoo.org/glsa/glsa-201308-06.xml
http://secunia.com/advisories/53372