CVE-2021-23406 (Critical) detected in pac-resolver-3.0.0.tgz, degenerator-1.0.4.tgz

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CVE-2021-23406 - Critical Severity Vulnerability

Vulnerable Libraries - pac-resolver-3.0.0.tgz, degenerator-1.0.4.tgz

pac-resolver-3.0.0.tgz

Generates an asynchronous resolver function from a PAC file

Library home page: https://registry.npmjs.org/pac-resolver/-/pac-resolver-3.0.0.tgz

Path to dependency file: /package.json

Path to vulnerable library: /node_modules/pac-resolver/package.json

Dependency Hierarchy:

• snyk-1.406.0.tgz (Root Library)
  • proxy-agent-3.1.1.tgz
    • pac-proxy-agent-3.0.1.tgz
      • ❌ pac-resolver-3.0.0.tgz (Vulnerable Library)

degenerator-1.0.4.tgz

Turns sync functions into async generator functions

Library home page: https://registry.npmjs.org/degenerator/-/degenerator-1.0.4.tgz

Path to dependency file: /package.json

Path to vulnerable library: /node_modules/degenerator/package.json

Dependency Hierarchy:

• snyk-1.406.0.tgz (Root Library)
  • proxy-agent-3.1.1.tgz
    • pac-proxy-agent-3.0.1.tgz
      • pac-resolver-3.0.0.tgz
        • ❌ degenerator-1.0.4.tgz (Vulnerable Library)

Found in base branch: master

Vulnerability Details

This affects the package pac-resolver before 5.0.0. This can occur when used with untrusted input, due to unsafe PAC file handling. NOTE: The fix for this vulnerability is applied in the node-degenerator library, a dependency written by the same maintainer.

Publish Date: 2021-08-24

URL: CVE-2021-23406

CVSS 3 Score Details (9.8)

Base Score Metrics:

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

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-9j49-mfvp-vmhm

Release Date: 2021-08-24

Fix Resolution (pac-resolver): 5.0.0

Direct dependency fix Resolution (snyk): 1.518.0

Fix Resolution (degenerator): 5.0.0

Direct dependency fix Resolution (snyk): 1.518.0

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⛑️ Automatic Remediation will be attempted for this issue.