FTP clients, including those that may be embedded in web clients, can be vulnerable to certain directory traversal attacks by modified FTP servers. If successful, the attacks could allow the server to overwrite or create arbitrary files outside of the client’s working directory, subject to file/directory permissions and the privilege level of the client. Vulnerable clients include wget-1.8.1, OpenBSD 3.0 ftp, and Solaris 2.7 and 2.7 ftp.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/30662/ftp.client.traversal.txt
Source: https://packetstormsecurity.com/files/30662/ftp.client.traversal.txt.html