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CVE-2022-23519— Possible XSS vulnerability with certain configurations of rails-html-sanitizer

Quick assessment

Affected
rails rails-html-sanitizer
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Rails是美国Rails团队的一套基于Ruby语言的开源Web应用框架。 Rails rails-html-sanitizer 1.4.4之前版本存在跨站脚本漏洞，该漏洞源于Rails::Html::Sanitizer 的某些配置可能存在 XSS 漏洞，如果应用程序开发人员通过以下任一方式覆盖了消毒剂的允许标签，攻击者可能会注入内容：允许“math”和 style 元素，或者同时允许 svg 和 style 元素。

CVSS 7.2 · High EPSS 1.02% · P62
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I. Basic Information for CVE-2022-23519

Vulnerability Information
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Vulnerability Title
Possible XSS vulnerability with certain configurations of rails-html-sanitizer
Source: CVE Program / CVE List V5
Vulnerability Description
rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Prior to version 1.4.4, 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 in either of the following ways: allow both "math" and "style" elements, or allow both "svg" and "style" elements. Code is only impacted if allowed tags are being overridden. . This issue is fixed in version 1.4.4. All users overriding the allowed tags to include "math" or "svg" and "style" should either upgrade or use the following workaround immediately: Remove "style" from the overridden allowed tags, or remove "math" and "svg" from the overridden allowed tags.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Rails 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Rails是美国Rails团队的一套基于Ruby语言的开源Web应用框架。 Rails rails-html-sanitizer 1.4.4之前版本存在跨站脚本漏洞，该漏洞源于Rails::Html::Sanitizer 的某些配置可能存在 XSS 漏洞，如果应用程序开发人员通过以下任一方式覆盖了消毒剂的允许标签，攻击者可能会注入内容：允许“math”和 style 元素，或者同时允许 svg 和 style 元素。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
rails rails-html-sanitizer < 1.4.4 -

II. Public POCs for CVE-2022-23519

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III. Intelligence Information for CVE-2022-23519

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Vendor Advisories for CVE-2022-23519 (1)

Other References for CVE-2022-23519 (1)

Same Patch Batch · rails · 2022-12-14 · 4 CVEs total

CVE-2022-23517 7.5 HIGH Inefficient Regular Expression Complexity in rails-html-sanitizer
CVE-2022-23520 6.1 MEDIUM rails-html-sanitizer contains an incomplete fix for an XSS vulnerability
CVE-2022-23518 Improper neutralization of data URIs allows XSS in rails-html-sanitizer

IV. Related Vulnerabilities

Same product: rails-html-sanitizer
Same vendor: rails
Same weakness: CWE-79

V. Comments for CVE-2022-23519

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