CVE-2021-28834 (High) detected in kramdown-2.3.0.gem

[mend-for-github-com]

CVE-2021-28834 - High Severity Vulnerability

Vulnerable Library - kramdown-2.3.0.gem

kramdown is yet-another-markdown-parser but fast, pure Ruby, using a strict syntax definition and supporting several common extensions.

Library home page: https://rubygems.org/gems/kramdown-2.3.0.gem

Dependency Hierarchy:

• middleman-4.3.11.gem (Root Library)
  • ❌ kramdown-2.3.0.gem (Vulnerable Library)

Found in base branch: master

Vulnerability Details

Kramdown before 2.3.1 does not restrict Rouge formatters to the Rouge::Formatters namespace, and thus arbitrary classes can be instantiated.

Publish Date: 2021-03-19

URL: CVE-2021-28834

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

Release Date: 2021-03-19

Fix Resolution: 2.3.1