GHSA-2x7h-96h5-rq84
Path Traversal in SharpZipLib
Quick fix
GHSA-2x7h-96h5-rq84 — SharpZipLib: upgrade to the fixed version with the command below.
dotnet add package SharpZipLib --version 1.3.3Details
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.
Are you affected?
Enter the version of the package you're using.
Affected packages
1.3.0Fixed in: 1.3.3dotnet add package SharpZipLib --version 1.3.3References
- https://nvd.nist.gov/vuln/detail/CVE-2021-32841[ADVISORY]
- https://github.com/icsharpcode/SharpZipLib/commit/5c3b293de5d65b108e7f2cd0ea8f81c1b8273f78[WEB]
- https://github.com/icsharpcode/SharpZipLib[PACKAGE]
- https://github.com/icsharpcode/SharpZipLib/releases/tag/v1.3.3[WEB]
- https://securitylab.github.com/advisories/GHSL-2021-125-sharpziplib[ADVISORY]