Buffer overflow in the cmd_usr function in ftp-gw in TIS Internet Firewall Toolkit (FWTK) allows remote attackers to execute arbitrary code via a long destination hostname (dest).
https://exchange.xforce.ibmcloud.com/vulnerabilities/31363
http://www.securityfocus.com/bid/21960
http://www.ranum.com/security/computer_security/editorials/codetools/