Path Traversal in SharpZipLib
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
SharpZipLibNuGet | >= 1.3.0, < 1.3.3 | 1.3.3 |
Affected products
2- Range: 1.3.3
Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-2x7h-96h5-rq84ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2021-32841ghsaADVISORY
- securitylab.github.com/advisories/GHSL-2021-125-sharpziplibghsaADVISORY
- github.com/icsharpcode/SharpZipLib/commit/5c3b293de5d65b108e7f2cd0ea8f81c1b8273f78ghsax_refsource_MISCWEB
- github.com/icsharpcode/SharpZipLib/releases/tag/v1.3.3ghsax_refsource_MISCWEB
- securitylab.github.com/advisories/GHSL-2021-125-sharpziplib/mitrex_refsource_CONFIRM
News mentions
0No linked articles in our index yet.