RSniff 1.0 allows remote attackers to cause a denial of service (connection exhaustion) via a large number of connections with a command other than AUTHENTICATE, or without any data, which prevents the socket from being closed properly.
https://exchange.xforce.ibmcloud.com/vulnerabilities/15823
http://www.securityfocus.com/bid/10093
http://secunia.com/advisories/11339