Lack of sufficient path validation in South River Technologies' Titan MFT and Titan SFTP servers on Linux allows an authenticated attacker to get the size of an arbitrary file on the filesystem using path traversal in the ftp "SIZE" command
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.