wzdftpd 0.5.4 allows remote authenticated users to execute arbitrary commands via shell metacharacters in the SITE command.Referenceshttp://www.osvdb.org/19682http://www.securiteam.com/exploits/5CP0R1PGUE.htmlhttp://www.debian.org/security/2006/dsa-1006http://secunia.com/advisories/16936http://www.securityfocus.com/bid/14935http://archives.neohapsis.com/archives/fulldisclosure/2005-09/0646.html