Format string vulnerability in the msg command (cat_message function in msg.c) in OpenFTPD 0.30.2 and earlier allows remote authenticated users to execute arbitrary code via format string specifiers in the message argument.
https://exchange.xforce.ibmcloud.com/vulnerabilities/16843
https://euvd.enisa.europa.eu/vulnerability/EUVD-2004-2514
http://www.securityfocus.com/bid/10830
http://www.openftpd.org:9673/openftpd
http://securitytracker.com/id?1010823
http://secunia.com/advisories/12174
http://archives.neohapsis.com/archives/bugtraq/2004-08/0017.html
http://archives.neohapsis.com/archives/bugtraq/2004-07/0350.html