Multiple directory traversal vulnerabilities in the TFTP Server in Distinct Intranet Servers 3.10 and earlier allow remote attackers to read or write arbitrary files via a .. (dot dot) in the (1) get or (2) put commands.
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.