CVE-2021-32841

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.
Configurations

Configuration 1 (hide)

cpe:2.3:a:sharpziplib_project:sharpziplib:*:*:*:*:*:*:*:*

History

21 Nov 2024, 06:07

Type Values Removed Values Added
References () https://github.com/icsharpcode/SharpZipLib/commit/5c3b293de5d65b108e7f2cd0ea8f81c1b8273f78 - Patch, Third Party Advisory () https://github.com/icsharpcode/SharpZipLib/commit/5c3b293de5d65b108e7f2cd0ea8f81c1b8273f78 - Patch, Third Party Advisory
References () https://github.com/icsharpcode/SharpZipLib/releases/tag/v1.3.3 - Release Notes, Third Party Advisory () https://github.com/icsharpcode/SharpZipLib/releases/tag/v1.3.3 - Release Notes, Third Party Advisory
References () https://securitylab.github.com/advisories/GHSL-2021-125-sharpziplib/ - Exploit, Third Party Advisory () https://securitylab.github.com/advisories/GHSL-2021-125-sharpziplib/ - Exploit, Third Party Advisory
CVSS v2 : 5.0
v3 : 5.3
v2 : 5.0
v3 : 4.0

Information

Published : 2022-01-26 22:15

Updated : 2024-11-21 06:07


NVD link : CVE-2021-32841

Mitre link : CVE-2021-32841

CVE.ORG link : CVE-2021-32841


JSON object : View

Products Affected

sharpziplib_project

  • sharpziplib
CWE
CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')