CVE-2021-32842
Severity CVSS v4.0:
Pending analysis
Type:
CWE-22
Path Traversal
Publication date:
26/01/2022
Last modified:
07/02/2022
Description
SharpZipLib (or #ziplib) is a Zip, GZip, Tar and BZip2 library. Starting version 1.0.0 and prior to version 1.3.3, a check was added if the destination file is under a destination directory. However, it is not enforced that `_baseDirectory` ends with slash. If the _baseDirectory is not slash terminated like `/home/user/dir` it is possible to create a file with a name thats begins as the destination directory one level up from the 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 fixed this vulnerability.
Impact
Base Score 3.x
5.30
Severity 3.x
MEDIUM
Base Score 2.0
5.00
Severity 2.0
MEDIUM
Vulnerable products and versions
CPE | From | Up to |
---|---|---|
cpe:2.3:a:sharpziplib_project:sharpziplib:*:*:*:*:*:*:*:* | 1.0.0 (including) | 1.3.3 (excluding) |
To consult the complete list of CPE names with products and versions, see this page