CWE-34 - Path Traversal: '....//'
- Abstraction:Variant
- Structure:Simple
- Status:Incomplete
- Release Date:2006-07-19
- Latest Modification Date:2023-06-29
Weakness Name
Path Traversal: '....//'
Description
The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize '....//' (doubled dot dot slash) sequences that can resolve to a location that is outside of that directory.
This allows attackers to traverse the file system to access files or directories that are outside of the restricted directory. The '....//' manipulation is useful for bypassing some path traversal protection schemes. If "../" is filtered in a sequential fashion, as done by some regular expression engines, then "....//" can collapse into the "../" unsafe value (CWE-182). It could also be useful when ".." is removed, if the operating system treats "//" and "/" as equivalent.
Common Consequences
Scope: Confidentiality, Integrity
Impact: Read Files or Directories, Modify Files or Directories
