MySQL MaxDB before 7.5.00.18 allows remote attackers to cause a denial of service (crash) via an HTTP request to webdbm with high ASCII values in the Server field, which triggers an assert error in the IsAscii7 function.
https://exchange.xforce.ibmcloud.com/vulnerabilities/17633
http://www.securityfocus.com/bid/11346
http://www.secunia.com/advisories/12756
http://www.idefense.com/application/poi/display?id=150&type=vulnerabilities&flashstatus=false