/var/WEB-GUI/cgi-bin/downloadfile.cgi on FiberHome HG2201T 1.00.M5007_JS_201804 devices allows pre-authentication Directory Traversal for reading arbitrary files.
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.
Link | Tags |
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https://gist.github.com/ztz472947849/d62e7b6f4831b55c338ef22432eca06d | third party advisory exploit |