CVE-2021-29418 (Medium) detected in netmask-1.0.6.tgz

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CVE-2021-29418 - Medium Severity Vulnerability

Vulnerable Library - netmask-1.0.6.tgz

Parse and lookup IP network blocks

Library home page: https://registry.npmjs.org/netmask/-/netmask-1.0.6.tgz

Path to dependency file: /package.json

Path to vulnerable library: /node_modules/netmask/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
        • ❌ netmask-1.0.6.tgz (Vulnerable Library)

Found in HEAD commit: 2e9d597fe70064b9c61d9203c8a93a380a667238

Found in base branch: master

Vulnerability Details

The netmask package before 2.0.1 for Node.js mishandles certain unexpected characters in an IP address string, such as an octal digit of 9. This (in some situations) allows attackers to bypass access control that is based on IP addresses. NOTE: this issue exists because of an incomplete fix for CVE-2021-28918.

Publish Date: 2021-03-30

URL: CVE-2021-29418

CVSS 3 Score Details (5.3)

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: Low
  • Availability Impact: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://vuln.ryotak.me/advisories/6.txt

Release Date: 2021-03-30

Fix Resolution (netmask): 2.0.1

Direct dependency fix Resolution (snyk): 1.518.0

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⛑️ Automatic Remediation will be attempted for this issue.