A vulnerability in the WebApl component of Mitel OpenScape Xpressions through V7R1 FR5 HF43 P913 could allow an unauthenticated attacker to conduct a path traversal attack due to insufficient input validation. A successful exploit could allow an attacker to read files from the underlying OS and obtain sensitive information.
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.