CVE-2023-24824 (High) detected in commonmarker-0.17.7.1.gem

[mend-bolt-for-github]

CVE-2023-24824 - High Severity Vulnerability

Vulnerable Library - commonmarker-0.17.7.1.gem

A fast, safe, extensible parser for CommonMark. This wraps the official libcmark library.

Library home page: https://rubygems.org/gems/commonmarker-0.17.7.1.gem

Dependency Hierarchy:

• github-pages-175.gem (Root Library)
  • jekyll-commonmark-ghpages-0.1.3.gem
    • ❌ commonmarker-0.17.7.1.gem (Vulnerable Library)

Found in base branch: master

Vulnerability Details

cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. A polynomial time complexity issue in cmark-gfm may lead to unbounded resource exhaustion and subsequent denial of service. This CVE covers quadratic complexity issues when parsing text which leads with either large numbers of > or - characters. This issue has been addressed in version 0.29.0.gfm.10. Users are advised to upgrade. Users unable to upgrade should validate that their input comes from trusted sources.

Publish Date: 2023-03-31

URL: CVE-2023-24824

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: None
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-48wp-p9qv-4j64

Release Date: 2023-03-31

Fix Resolution: commonmarker - 0.23.9

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