Directory traversal vulnerability in FFFTP 1.96b allows remote FTP servers to create or overwrite arbitrary files via a response to an FTP LIST command with a filename that contains a .. (dot dot).
https://exchange.xforce.ibmcloud.com/vulnerabilities/42796
http://www.vupen.com/english/advisories/2008/1708/references
http://www.securityfocus.com/bid/29459