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

[mend-bolt-for-github]

CVE-2018-20834 - High Severity Vulnerability

Vulnerable Library - tar-2.2.1.tgz

tar for node

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

Dependency Hierarchy:

• pillars-0.7.1.tgz (Root Library)
  • templated-0.3.9.tgz
    • nunjucks-3.1.2.tgz
      • chokidar-1.7.0.tgz
        • fsevents-1.1.3.tgz
          • node-pre-gyp-0.6.39.tgz
            • ❌ tar-2.2.1.tgz (Vulnerable Library)

Found in HEAD commit: 7c3567c7b8d78dce0fcb947eca5db3cca195eb19

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: Change files

Origin: isaacs/node-tar@7ecef07

Release Date: 2019-05-15

Fix Resolution: Replace or update the following files: bad-link.tar, parse.js, link-file-entry-collision.js, package.json, bad-link.hex

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