| Package | Affected versions | Patched versions |
|---|---|---|
| SharpZipLib | ≥ 1.3.0, < 1.3.3 | 1.3.3 |
| sharpziplib | ≥ 1.3.0, < 1.3.3 | 1.3.3 |
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.
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