CWE-30: Path Traversal: '\dir\..\filename'
VariantDraft
The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize '\dir\..\filename' (leading backslash dot dot) sequences that can resolve to a location that is outside of that directory.
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Extended Description
This allows attackers to traverse the file system to access files or directories that are outside of the restricted directory. This is similar to CWE-26, except using "\" instead of "/". The '\dir\..\filename' manipulation is useful for bypassing some path traversal protection schemes. Sometimes a program only checks for "..\" at the beginning of the input, so a "\..\" can bypass that check.
Technical Details
- Structure
- Simple
Applicable To
Not Language-Specific
Windows