VulnerabilityModified

CVE-2022-23520

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.

MEDIUM 6.1EPSS 1.11%

Does this matter?

Lower severity and a low EPSS score (1.11%). Track it; it rarely justifies an emergency change on its own.

Description

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.

CVSS 3.1: 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS: 1.11% probability · 64th percentile
CISA KEV: Not listed
Weakness: CWE-79
Affected: rubyonrails/rails html sanitizers · debian/debian linux
Source: security-advisories@github.com

References

https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-rrfc-7g8p-99q8Exploit, Third Party Advisory
https://hackerone.com/reports/1654310Exploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00012.htmlMailing List, Third Party Advisory
https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-rrfc-7g8p-99q8Exploit, Third Party Advisory
https://hackerone.com/reports/1654310Exploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00012.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/09/msg00045.html

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.