Cuberite before 2019-06-11 allows webadmin directory traversal via ....// because the protection mechanism simply removes one ../ substring.
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://github.com/cuberite/cuberite/pull/4341 | third party advisory patch |