Buffer overflow in the CRAM-MD5 authentication mechanism in the IMAP server (nimap.exe) in IBM Lotus Domino before 6.5.6 and 7.x before 7.0.2 FP1 allows remote attackers to cause a denial of service via a long username.
https://exchange.xforce.ibmcloud.com/vulnerabilities/33276
http://www.zerodayinitiative.com/advisories/ZDI-07-011.html
http://www.vupen.com/english/advisories/2007/1133
http://www.securitytracker.com/id?1017823
http://www.securityfocus.com/bid/23173
http://www.securityfocus.com/bid/23172