CVE-2021-28918 (High) detected in netmask-1.0.6.tgz

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CVE-2021-28918 - High 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:

• pac-resolver-3.0.1.tgz (Root Library)
  • ❌ netmask-1.0.6.tgz (Vulnerable Library)

Found in base branch: master

Vulnerability Details

Improper input validation of octal strings in netmask npm package v1.0.6 and below allows unauthenticated remote attackers to perform indeterminate SSRF, RFI, and LFI attacks on many of the dependent packages. A remote unauthenticated attacker can bypass packages relying on netmask to filter IPs and reach critical VPN or LAN hosts.

Publish Date: 2021-04-01

URL: CVE-2021-28918

CVSS 3 Score Details (9.1)

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: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-pch5-whg9-qr2r

Release Date: 2021-04-01

Fix Resolution (netmask): 2.0.1

Direct dependency fix Resolution (@crossbrowsertesting/pac-resolver): 3.0.2

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