GHSA-rrfc-7g8p-99q8

Опубликовано: 13 дек. 2022

Источник: github

Github: Прошло ревью

CVSS3: 6.1

Описание

Possible XSS vulnerability with certain configurations of rails-html-sanitizer

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:

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)

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.

Ссылки

Пакеты

Наименование

rails-html-sanitizer

rubygems

Затронутые версииВерсия исправления

< 1.4.4

1.4.4

EPSS

Процентиль: 60%

0.00392

Низкий

6.1 Medium

CVSS3

CVE ID

CVE-2022-23520

Дефекты

CWE-79

Связанные уязвимости

CVE-2022-23520

CVSS3: 6.1

ubuntu

около 3 лет назад

rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Prior to version 1.4.4, there is a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer due to an incomplete fix of CVE-2022-32209. 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. This issue is patched in version 1.4.4. All users overriding the allowed tags to include both "select" and "style" should either upgrade or use this workaround: Remove either "select" or "style" from the overridden allowed tags. NOTE: Code is _not_ impacted if allowed tags are overridden using either the :tags option to the Action View helper method sanitize or the :tags option to the instance method SafeListSanitizer#sanitize.