rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Prior to version 1.4.4, a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer may allow an attacker to inject content if the application developer has overridden the sanitizer's allowed tags in either of the following ways: allow both "math" and "style" elements, or allow both "svg" and "style" elements. Code is only impacted if allowed tags are being overridden. . This issue is fixed in version 1.4.4. All users overriding the allowed tags to include "math" or "svg" and "style" should either upgrade or use the following workaround immediately: Remove "style" from the overridden allowed tags, or remove "math" and "svg" from the overridden allowed tags.
CVE-2022-23519 - High Severity Vulnerability
HTML sanitization for Rails applications
Library home page: https://rubygems.org/gems/rails-html-sanitizer-1.0.3.gem
Path to dependency file: /Gemfile.lock
Path to vulnerable library: /Gemfile.lock
Dependency Hierarchy: - dotenv-rails-2.2.0.gem (Root Library) - railties-5.0.2.gem - actionpack-5.0.2.gem - :x: **rails-html-sanitizer-1.0.3.gem** (Vulnerable Library)
Found in base branch: master
rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Prior to version 1.4.4, a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer may allow an attacker to inject content if the application developer has overridden the sanitizer's allowed tags in either of the following ways: allow both "math" and "style" elements, or allow both "svg" and "style" elements. Code is only impacted if allowed tags are being overridden. . This issue is fixed in version 1.4.4. All users overriding the allowed tags to include "math" or "svg" and "style" should either upgrade or use the following workaround immediately: Remove "style" from the overridden allowed tags, or remove "math" and "svg" from the overridden allowed tags.
Publish Date: 2022-12-14
URL: CVE-2022-23519
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Changed - Impact Metrics: - Confidentiality Impact: Low - Integrity Impact: Low - Availability Impact: None
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-9h9g-93gc-623h
Release Date: 2022-12-14
Fix Resolution: rails-html-sanitizer - 1.4.4
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