Directory traversal vulnerability in Serv-U FTP Server before 11.1.0.5 allows remote authenticated users to read and write arbitrary files, and list and create arbitrary directories, via a "..:/" (dot dot colon forward slash) in the (1) list, (2) put, or (3) get commands.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2011-4718
http://www.serv-u.com/releasenotes/
http://www.exploit-db.com/exploits/18182
http://secunia.com/advisories/47021
http://archives.neohapsis.com/archives/fulldisclosure/2011-11/0454.html