CVE-2018-20834 (High) detected in tar-2.2.2.tgz

[mend-bolt-for-github]

CVE-2018-20834 - High Severity Vulnerability

Vulnerable Library - tar-2.2.2.tgz

tar for node

Library home page: https://registry.npmjs.org/tar/-/tar-2.2.2.tgz

Path to dependency file: /tmp/ws-scm/website/docs/package.json

Path to vulnerable library: /tmp/ws-scm/website/docs/node_modules/tar/package.json

Dependency Hierarchy:

• gulp-sass-4.0.2.tgz (Root Library)
  • node-sass-4.12.0.tgz
    • node-gyp-3.8.0.tgz
      • ❌ tar-2.2.2.tgz (Vulnerable Library)

Found in HEAD commit: e2e3dc7e7f13d2bacd617e9f3854642af94f5b03

Vulnerability Details

A vulnerability was found in node-tar before version 4.4.2. 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.

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://hackerone.com/reports/344595

Release Date: 2019-04-30

Fix Resolution: v4.4.2

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