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Security Advisories: GSA_kwCzR0hTQS1xanFwLXhyOTYtY2o5Oc4AA70j

Trix Editor Arbitrary Code Execution Vulnerability

The Trix editor, versions prior to 2.1.1, is vulnerable to arbitrary code execution when copying and pasting content from the web or other documents with markup into the editor. The vulnerability stems from improper sanitization of pasted content, allowing an attacker to embed malicious scripts which are executed within the context of the application.

Vulnerable Versions:

Fixed Versions:

Vector:

document.addEventListener('copy', function(e){
  e.clipboardData.setData('text/html', '<div><noscript><div class="123</noscript>456<img src=1 onerror=alert(1)//"></div></noscript></div>');
  e.preventDefault();
});

and pasting into the Trix editor, the script within the content is executed.

document.write(`copy<div data-trix-attachment="{&quot;contentType&quot;:&quot;text/html&quot;,&quot;content&quot;:&quot;&lt;img src=1 onerror=alert(101)&gt;HELLO123&quot;}"></div>me`);

Impact:

An attacker could exploit these vulnerabilities to execute arbitrary JavaScript code within the context of the user's session, potentially leading to unauthorized actions being performed or sensitive information being disclosed.

Remediation:

Update Recommendation: Users should upgrade to Trix editor version 2.1.1 or later, which incorporates proper sanitization of input from copied content.

CSP Enhancement: Additionally, enhancing the Content Security Policy (CSP) to disallow inline scripts can significantly mitigate the risk of such vulnerabilities. Set CSP policies such as script-src 'self' to ensure that only scripts hosted on the same origin are executed, and explicitly prohibit inline scripts using script-src-elem.

References:

Credit: These issues were reported by security researchers loknop and pinpie.

Permalink: https://github.com/advisories/GHSA-qjqp-xr96-cj99
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1xanFwLXhyOTYtY2o5Oc4AA70j
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: 13 days ago
Updated: 5 days ago


CVSS Score: 5.4
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Identifiers: GHSA-qjqp-xr96-cj99, CVE-2024-34341
References: Repository: https://github.com/basecamp/trix
Blast Radius: 16.7

Affected Packages

npm:trix
Dependent packages: 50
Dependent repositories: 1,229
Downloads: 911,241 last month
Affected Version Ranges: >= 0.9.0, < 1.3.2, >= 2.0.0, < 2.1.1
Fixed in: 1.3.2, 2.1.1
All affected versions: 0.9.0, 0.9.1, 0.9.2, 0.9.3, 0.9.4, 0.9.5, 0.9.6, 0.9.7, 0.9.8, 0.9.9, 0.9.10, 0.10.0, 0.10.1, 0.10.2, 0.11.0, 0.11.1, 0.11.2, 0.11.3, 0.11.4, 0.12.0, 0.12.1, 1.0.0, 1.1.0, 1.1.1, 1.2.0, 1.2.1, 1.2.2, 1.2.3, 1.2.4, 1.3.0, 1.3.1, 2.0.0, 2.0.1, 2.0.2, 2.0.3, 2.0.4, 2.0.5, 2.0.6, 2.0.7, 2.0.8, 2.0.9, 2.0.10, 2.1.0
All unaffected versions: 1.3.2, 2.1.1