CVE-2022-23516 (High) detected in loofah-2.18.0.gem

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CVE-2022-23516 - High Severity Vulnerability

Vulnerable Library - loofah-2.18.0.gem

Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri.

Loofah excels at HTML sanitization (XSS prevention). It includes some nice HTML sanitizers, which are based on HTML5lib's safelist, so it most likely won't make your codes less secure. (These statements have not been evaluated by Netexperts.)

ActiveRecord extensions for sanitization are available in the loofah-activerecord gem.

Library home page: https://rubygems.org/gems/loofah-2.18.0.gem

Path to dependency file: /Gemfile.lock

Path to vulnerable library: /home/wss-scanner/.gem/ruby/2.7.0/cache/loofah-2.18.0.gem

Dependency Hierarchy:

• actionview-6.0.5.gem (Root Library)
  • rails-html-sanitizer-1.4.2.gem
    • :x: loofah-2.18.0.gem (Vulnerable Library)

Found in base branch: master

Vulnerability Details

Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. Loofah >= 2.2.0, < 2.19.1 uses recursion for sanitizing CDATA sections, making it susceptible to stack exhaustion and raising a SystemStackError exception. This may lead to a denial of service through CPU resource consumption. This issue is patched in version 2.19.1. Users who are unable to upgrade may be able to mitigate this vulnerability by limiting the length of the strings that are sanitized.

Publish Date: 2022-12-14

URL: CVE-2022-23516

CVSS 3 Score Details (7.5)

Base Score Metrics:

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

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://github.com/flavorjones/loofah/security/advisories/GHSA-3x8r-x6xp-q4vm

Release Date: 2022-12-14

Fix Resolution: loofah - 2.19.1