Buffer overflow in bftp daemon (bftpd) 1.0.11 allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long USER command.
https://exchange.xforce.ibmcloud.com/vulnerabilities/5426
https://euvd.enisa.europa.eu/vulnerability/EUVD-2000-0930
http://www.securityfocus.com/bid/1858
http://archives.neohapsis.com/archives/bugtraq/2000-10/0397.html