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

[mend-bolt-for-github[bot]]

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: - jekyll-sitemap-1.4.0.gem (Root Library) - jekyll-4.2.0.gem - kramdown-parser-gfm-1.1.0.gem - :x: **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

Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28834

Release Date: 2021-03-19

Fix Resolution: REL_2_3_1

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