Fixing Zip Slip vulnerability #111
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aviadatsnyk
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Jun 18, 2018
src/me/raynes/fs/compression.clj
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| (java.io ByteArrayOutputStream File))) | ||
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| (defn- check-final-path-inside-target-dir! [f target-dir entry] | ||
| (when-not (-> f .getCanonicalPath (.startsWith (.getCanonicalPath target-dir))) |
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@dlebrero great job fixing this!
can you please add the path separator after (.getCanonicalPath target-dir) and make it
(str (.getCanonicalPath target-dir) (java.io.File/separator)) (or any better implementation)?
This is to make sure that an evil file like /tmp/safe.UNSAFE/evil.sh cannot be written if the target directory is /tmp/safe.
See also the java reference implementation https://snyk.io/research/zip-slip-vulnerability#java.
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@aviadatsnyk thanks a lot for the review! |
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See https://github.com/snyk/zip-slip-vulnerability