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.
{ "nvd_published_at": "2022-01-26T22:15:00Z", "cwe_ids": [ "CWE-22" ], "severity": "MODERATE", "github_reviewed": true, "github_reviewed_at": "2022-02-01T16:21:00Z" }