CVE-2021-32840 Path Traversal in SharpZipLib

2022-01-2621:05:10

CWE-22

GitHub_M

www.cve.org

7.3 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

HIGH

Availability Impact

LOW

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

9.9 High

AI Score

Confidence

High

0.006 Low

EPSS

Percentile

78.8%

JSON

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.

CNA Affected

[
  {
    "product": "sharpziplib",
    "vendor": "icsharpcode",
    "versions": [
      {
        "lessThan": "1.3.3",
        "status": "affected",
        "version": "1.3.3",
        "versionType": "custom"
      },
      {
        "lessThan": "0.86.0*",
        "status": "affected",
        "version": "0.86.0",
        "versionType": "custom"
      }
    ]
  }
]