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CVE-2022-23518— Improper neutralization of data URIs allows XSS in 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 1.0.3到1.4.4版本存在跨站脚本漏洞，该漏洞源于当与 Loofah 结合使用时， 容易受到通过数据 URI 的跨站脚本攻击。

AI Predicted 5.4 Difficulty: Easy EPSS 0.89% · P58

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2022-23518

Vulnerability Information
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Vulnerability Title
Improper neutralization of data URIs allows XSS in rails-html-sanitizer
Source: CVE Program / CVE List V5
Vulnerability Description
rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Versions >= 1.0.3, < 1.4.4 are vulnerable to cross-site scripting via data URIs when used in combination with Loofah >= 2.1.0. This issue is patched in version 1.4.4.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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 1.0.3到1.4.4版本存在跨站脚本漏洞，该漏洞源于当与 Loofah 结合使用时， 容易受到通过数据 URI 的跨站脚本攻击。
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 >= 1.0.3, < 1.4.4 -

II. Public POCs for CVE-2022-23518

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III. Intelligence Information for CVE-2022-23518

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Vendor Advisories for CVE-2022-23518 (1)

Other References for CVE-2022-23518 (2)

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-2022-23519 7.2 HIGH Possible XSS vulnerability with certain configurations of rails-html-sanitizer
CVE-2022-23520 6.1 MEDIUM rails-html-sanitizer contains an incomplete fix for an XSS vulnerability

IV. Related Vulnerabilities

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

V. Comments for CVE-2022-23518

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