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.
:heavy_check_mark: This issue was automatically closed by Mend because the vulnerable library in the specific branch(es) was either marked as ignored or it is no longer part of the Mend inventory.
CVE-2022-23519 - Medium Severity Vulnerability
Vulnerable Library - rails-html-sanitizer-1.2.0.gem
HTML sanitization for Rails applications
Library home page: https://rubygems.org/gems/rails-html-sanitizer-1.2.0.gem
Dependency Hierarchy: - rails-5.2.3.gem (Root Library) - actionview-5.2.3.gem - :x: **rails-html-sanitizer-1.2.0.gem** (Vulnerable Library)
Found in HEAD commit: 0cc6845b68c9648d6cc64293d4276d9e63d3123e
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, 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
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-9h9g-93gc-623h
Release Date: 2022-12-14
Fix Resolution: rails-html-sanitizer - 1.4.4
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