Loofah is a general library for manipulating and transforming HTML/XML
documents and fragments. It's built on top of Nokogiri and libxml2, so
it's fast and has a nice API.
Loofah excels at HTML sanitization (XSS prevention). It includes some
nice HTML sanitizers, which are based on HTML5lib's whitelist, 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](https://github.com/flavorjones/loofah-activerecord).
Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. Loofah < 2.19.1 contains an inefficient regular expression that is susceptible to excessive backtracking when attempting to sanitize certain SVG attributes. This may lead to a denial of service through CPU resource consumption. This issue is patched in version 2.19.1.
: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-2022-23514 - High Severity Vulnerability
Vulnerable Library - loofah-2.2.3.gem
Loofah is a general library for manipulating and transforming HTML/XML documents and fragments. It's built on top of Nokogiri and libxml2, so it's fast and has a nice API. Loofah excels at HTML sanitization (XSS prevention). It includes some nice HTML sanitizers, which are based on HTML5lib's whitelist, 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](https://github.com/flavorjones/loofah-activerecord).
Library home page: https://rubygems.org/gems/loofah-2.2.3.gem
Dependency Hierarchy: - rails-5.2.3.gem (Root Library) - actionview-5.2.3.gem - rails-html-sanitizer-1.2.0.gem - :x: **loofah-2.2.3.gem** (Vulnerable Library)
Found in HEAD commit: 0cc6845b68c9648d6cc64293d4276d9e63d3123e
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 < 2.19.1 contains an inefficient regular expression that is susceptible to excessive backtracking when attempting to sanitize certain SVG attributes. This may lead to a denial of service through CPU resource consumption. This issue is patched in version 2.19.1.
Publish Date: 2022-12-14
URL: CVE-2022-23514
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/advisories/GHSA-486f-hjj9-9vhh
Release Date: 2022-12-14
Fix Resolution: loofah - 2.19.1
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