icsharpcode/sharpziplib · Security
Path Traversal in SharpZipLib
- GHSA ID
- GHSA-m22m-h4rf-pwq3
- CVE ID
- CVE-2021-32840
- Severity
- high
- Published
- Updated
- CVSS
- 7.3 · CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
- CVSS v3
- 7.3 · CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
Description
SharpZipLib (or #ziplib) is a Zip, GZip, Tar and BZip2 library. Prior to version 1.3.3, a TAR file entry ../evil.txt may be extracted in the parent directory of destFolder. This leads to arbitrary file write that may lead to code execution. The vulnerability was patched in version 1.3.3.
CWEs
- CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
References
- https://nvd.nist.gov/vuln/detail/CVE-2021-32840 ↗
- https://github.com/icsharpcode/SharpZipLib/commit/a0e96de70b5264f4c919b09253b1522bc7a221cc ↗
- https://github.com/icsharpcode/SharpZipLib/releases/tag/v1.3.3 ↗
- https://securitylab.github.com/advisories/GHSL-2021-125-sharpziplib/ ↗
- https://github.com/advisories/GHSA-m22m-h4rf-pwq3 ↗