Cross-site Scripting (XSS) Affecting ruby-rails-html-sanitizer package, versions <1.4.4-1


Severity

Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    0.11% (45th percentile)

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  • Snyk ID SNYK-DEBIANUNSTABLE-RUBYRAILSHTMLSANITIZER-3172422
  • published 15 Dec 2022
  • disclosed 14 Dec 2022

How to fix?

Upgrade Debian:unstable ruby-rails-html-sanitizer to version 1.4.4-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby-rails-html-sanitizer package and not the ruby-rails-html-sanitizer package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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.

CVSS Scores

version 3.1
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NVD

6.1 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    Required
  • Scope (S)
    Changed
  • Confidentiality (C)
    Low
  • Integrity (I)
    Low
  • Availability (A)
    None
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Red Hat

7.2 high
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SUSE

7.2 high