GHSA-rrfc-7g8p-99q8

Suggest an improvement
Source
https://github.com/advisories/GHSA-rrfc-7g8p-99q8
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/12/GHSA-rrfc-7g8p-99q8/GHSA-rrfc-7g8p-99q8.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-rrfc-7g8p-99q8
Aliases
Published
2022-12-13T17:51:40Z
Modified
2023-11-01T04:57:53.667722Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
Summary
Possible XSS vulnerability with certain configurations of rails-html-sanitizer
Details

Summary

There is a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer. This is due to an incomplete fix of CVE-2022-32209.

  • Versions affected: ALL
  • Not affected: NONE
  • Fixed versions: 1.4.4

Impact

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 to allow both "select" and "style" elements.

Code is only impacted if allowed tags are being overridden using either of the following two mechanisms:

  1. Using the Rails configuration config.action_view.sanitized_allow_tags=:

    # In config/application.rb
    config.action_view.sanitized_allowed_tags = ["select", "style"]
    

    (see https://guides.rubyonrails.org/configuring.html#configuring-action-view)

  2. Using the class method Rails::Html::SafeListSanitizer.allowed_tags=:

    # class-level option
    Rails::Html::SafeListSanitizer.allowed_tags = ["select", "style"]
    

All users overriding the allowed tags by either of the above mechanisms to include both "select" and "style" should either upgrade or use one of the workarounds immediately.

NOTE: Code is not impacted if allowed tags are overridden using either of the following mechanisms:

  • the :tags option to the Action View helper method sanitize.
  • the :tags option to the instance method SafeListSanitizer#sanitize.

Workarounds

Remove either "select" or "style" from the overridden allowed tags.

References

Credit

This vulnerability was responsibly reported by Dominic Breuker.

References

Affected packages

RubyGems / rails-html-sanitizer

Package

Name
rails-html-sanitizer
Purl
pkg:gem/rails-html-sanitizer

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.4.4

Affected versions

1.*

1.0.0
1.0.1
1.0.2
1.0.3
1.0.4
1.1.0
1.2.0
1.3.0
1.4.0
1.4.1
1.4.2
1.4.3