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.
archives.neohapsis.com/archives/bugtraq/2004-07/0350.html
archives.neohapsis.com/archives/bugtraq/2004-08/0017.html
secunia.com/advisories/12174
securitytracker.com/id?1010823
www.openftpd.org:9673/openftpd
www.osvdb.org/8261
www.securityfocus.com/bid/10830
exchange.xforce.ibmcloud.com/vulnerabilities/16843