CVE-2018-20834 (High) detected in tar-2.2.1.tgz, tar-4.4.1.tgz

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CVE-2018-20834 - High Severity Vulnerability

Vulnerable Libraries - tar-2.2.1.tgz, tar-4.4.1.tgz

tar-2.2.1.tgz

tar for node

Library home page: https://registry.npmjs.org/tar/-/tar-2.2.1.tgz

Dependency Hierarchy:

• gulp-sass-4.0.2.tgz (Root Library)
  • node-sass-4.11.0.tgz
    • node-gyp-3.8.0.tgz
      • ❌ tar-2.2.1.tgz (Vulnerable Library)

tar-4.4.1.tgz

tar for node

Library home page: https://registry.npmjs.org/tar/-/tar-4.4.1.tgz

Dependency Hierarchy:

• browser-sync-2.26.3.tgz (Root Library)
  • chokidar-2.0.4.tgz
    • fsevents-1.2.4.tgz
      • node-pre-gyp-0.10.0.tgz
        • ❌ tar-4.4.1.tgz (Vulnerable Library)

Found in HEAD commit: 4d038f6521e1205e037211e7c3dcc92a82448d22

Found in base branch: master

Vulnerability Details

A vulnerability was found in node-tar before version 4.4.2 (excluding version 2.2.2). An Arbitrary File Overwrite issue exists when extracting a tarball containing a hardlink to a file that already exists on the system, in conjunction with a later plain file with the same name as the hardlink. This plain file content replaces the existing file content. A patch has been applied to node-tar v2.2.2).

Publish Date: 2019-04-30

URL: CVE-2018-20834

CVSS 3 Score Details (7.5)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: High
  • Availability Impact: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16082

Release Date: 2019-04-30

Fix Resolution (tar): 2.2.2

Direct dependency fix Resolution (gulp-sass): 4.1.0

Fix Resolution (tar): 4.4.2

Direct dependency fix Resolution (browser-sync): 2.26.4