CVE-2022-23520 (Medium) detected in rails-html-sanitizer-1.4.2.gem

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CVE-2022-23520 - Medium Severity Vulnerability

Vulnerable Library - rails-html-sanitizer-1.4.2.gem

HTML sanitization for Rails applications

Library home page: https://rubygems.org/gems/rails-html-sanitizer-1.4.2.gem

Path to dependency file: /Gemfile.lock

Path to vulnerable library: /home/wss-scanner/.gem/ruby/2.7.0/cache/rails-html-sanitizer-1.4.2.gem

Dependency Hierarchy:

• actionview-6.0.5.gem (Root Library)
  • :x: rails-html-sanitizer-1.4.2.gem (Vulnerable Library)

Found in base branch: master

Vulnerability Details

rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Prior to version 1.4.4, there is a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer due to an incomplete fix of CVE-2022-32209. Rails::Html::Sanitizer may allow an attacker to inject content if the application developer has overridden the sanitizer's allowed tags to allow both "select" and "style" elements. Code is only impacted if allowed tags are being overridden. This issue is patched in version 1.4.4. All users overriding the allowed tags to include both "select" and "style" should either upgrade or use this workaround: Remove either "select" or "style" from the overridden allowed tags. NOTE: Code is not impacted if allowed tags are overridden using either the :tags option to the Action View helper method sanitize or the :tags option to the instance method SafeListSanitizer#sanitize.

Publish Date: 2022-12-14

URL: CVE-2022-23520

CVSS 3 Score Details (6.1)

Base Score Metrics:

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

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-rrfc-7g8p-99q8

Release Date: 2022-12-14

Fix Resolution: rails-html-sanitizer - 1.4.4