CVE-2020-26247 (Medium) detected in nokogiri-1.10.7.gem

[mend-bolt-for-github]

CVE-2020-26247 - Medium Severity Vulnerability

Vulnerable Library - nokogiri-1.10.7.gem

Nokogiri (鋸) is an HTML, XML, SAX, and Reader parser. Among Nokogiri's many features is the ability to search documents via XPath or CSS3 selectors.

Library home page: https://rubygems.org/gems/nokogiri-1.10.7.gem

Path to dependency file: /Gemfile.lock

Path to vulnerable library: /var/lib/gems/2.5.0/cache/nokogiri-1.10.7.gem

Dependency Hierarchy:

• github-pages-112.gem (Root Library)
  • jekyll-mentions-1.2.0.gem
    • html-pipeline-2.12.3.gem
      • ❌ nokogiri-1.10.7.gem (Vulnerable Library)

Found in base branch: master

Vulnerability Details

Nokogiri is a Rubygem providing HTML, XML, SAX, and Reader parsers with XPath and CSS selector support. In Nokogiri before version 1.11.0.rc4 there is an XXE vulnerability. XML Schemas parsed by Nokogiri::XML::Schema are trusted by default, allowing external resources to be accessed over the network, potentially enabling XXE or SSRF attacks. This behavior is counter to the security policy followed by Nokogiri maintainers, which is to treat all input as untrusted by default whenever possible. This is fixed in Nokogiri version 1.11.0.rc4.

Publish Date: 2020-12-30

URL: CVE-2020-26247

CVSS 3 Score Details (4.3)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: Low
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: Low
  • Integrity Impact: None
  • Availability Impact: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Release Date: 2020-12-30

Fix Resolution: 1.11.0.rc4

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