[DRE-maint] Bug#1013806: ruby-rails-html-sanitizer: CVE-2022-32209

[Salvatore Bonaccorso]

Source: ruby-rails-html-sanitizer
Version: 1.4.2-2
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for ruby-rails-html-sanitizer.

CVE-2022-32209[0]:
| # Possible XSS Vulnerability in Rails::Html::SanitizerThere is a
| possible XSS vulnerability with certain configurations of
| Rails::Html::Sanitizer.This vulnerability has been assigned the CVE
| identifier CVE-2022-32209.Versions Affected: ALLNot affected:
| NONEFixed Versions: v1.4.3## ImpactA 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.
| This may be done via application configuration:```ruby# In
| config/application.rbconfig.action_view.sanitized_allowed_tags =
| ["select", "style"]```see
| https://guides.rubyonrails.org/configuring.html#configuring-action-
| viewOr it may be done with a `:tags` option to the Action View helper
| `sanitize`:```<%= sanitize @comment.body, tags: ["select", "style"]
| %>```see https://api.rubyonrails.org/classes/ActionView/Helpers/San
| itizeHelper.html#method-i-sanitizeOr it may be done with
| Rails::Html::SafeListSanitizer directly:```ruby# class-level
| optionRails::Html::SafeListSanitizer.allowed_tags = ["select",
| "style"]```or```ruby# instance-level
| optionRails::Html::SafeListSanitizer.new.sanitize(@article.body, tags:
| ["select", "style"])```All users overriding the allowed tags by any of
| the above mechanisms to include both "select" and "style" should
| either upgrade or use one of the workarounds immediately.##
| ReleasesThe FIXED releases are available at the normal locations.##
| WorkaroundsRemove either `select` or `style` from the overridden
| allowed tags.## CreditsThis vulnerability was responsibly reported by
| [windshock](https://hackerone.com/windshock?type=user).


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2022-32209
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-32209
[1] https://hackerone.com/reports/1530898
[2] https://discuss.rubyonrails.org/t/cve-2022-32209-possible-xss-vulnerability-in-rails-sanitizer/80800
[3] https://github.com/rails/rails-html-sanitizer/commit/45a5c10fed3d9aa141594c80afa06d748fa0967d

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore