6.1 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
0.001 Low
EPSS
Percentile
46.7%
There is a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer. This is due to an incomplete fix of CVE-2022-32209.
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:
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)
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:
:tags
option to the Action View helper method sanitize
.:tags
option to the instance method SafeListSanitizer#sanitize
.Remove either “select” or “style” from the overridden allowed tags.
This vulnerability was responsibly reported by Dominic Breuker.
github.com/rails/rails-html-sanitizer
github.com/rails/rails-html-sanitizer/security/advisories/GHSA-rrfc-7g8p-99q8
github.com/rubysec/ruby-advisory-db/blob/master/gems/rails-html-sanitizer/CVE-2022-23520.yml
hackerone.com/reports/1654310
lists.debian.org/debian-lts-announce/2023/09/msg00012.html
nvd.nist.gov/vuln/detail/CVE-2022-23520
6.1 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
0.001 Low
EPSS
Percentile
46.7%