Cross-site Scripting (XSS) Affecting ruby-sanitize package, versions <4.6.6-2.1~0.20.04.2


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.06% (28th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Cross-site Scripting (XSS) vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-UBUNTU2004-RUBYSANITIZE-3325851
  • published24 Apr 2024
  • disclosed28 Jan 2023

Introduced: 28 Jan 2023

CVE-2023-23627  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 ruby-sanitize to version 4.6.6-2.1~0.20.04.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby-sanitize package and not the ruby-sanitize package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

Sanitize is an allowlist-based HTML and CSS sanitizer. Versions 5.0.0 and later, prior to 6.0.1, are vulnerable to Cross-site Scripting. When Sanitize is configured with a custom allowlist that allows noscript elements, attackers are able to include arbitrary HTML, resulting in XSS (cross-site scripting) or other undesired behavior when that HTML is rendered in a browser. The default configurations do not allow noscript elements and are not vulnerable. This issue only affects users who are using a custom config that adds noscript to the element allowlist. This issue has been patched in version 6.0.1. Users who are unable to upgrade can prevent this issue by using one of Sanitize's default configs or by ensuring that their custom config does not include noscript in the element allowlist.

CVSS Base Scores

version 3.1