cvedb.io
CVE-2021-32841
MEDIUM · CVSS 4
EPSS exploitation probability: 0%
Published 2022-01-26T22:15:07.837 · Last modified 2026-06-17T03:53:44.380

Summary

SharpZipLib (or #ziplib) is a Zip, GZip, Tar and BZip2 library. Starting version 1.3.0 and prior to version 1.3.3, a check was added if the destination file is under destination directory. However, it is not enforced that `destDir` ends with slash. If the `destDir` is not slash terminated like `/home/user/dir` it is possible to create a file with a name thats begins with the destination directory, i.e. `/home/user/dir.sh`. Because of the file name and destination directory constraints, the arbitrary file creation impact is limited and depends on the use case. Version 1.3.3 contains a patch for this vulnerability.

Affected products

sharpziplib_project — sharpziplib

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.