CVE CyberSecurity Database News

CVE-2024-3847 - Bypass Content Security Policy in Google Chrome WebUI using Crafted HTML Page

Poster -

CVE-2024-3847 is a vulnerability related to insufficient policy enforcement within the WebUI in Google Chrome browsers older than version 124..6367.60. This flaw enables remote attackers to bypass the content security policy (CSP) through a specially crafted HTML page. Google has categorized this flaw's severity as 'Low' in the Chromium Security list. However, it might still pose a risk to users employing outdated versions of Chrome.

In this post, we will discuss this vulnerability in detail, including code snippets to reproduce the issue, original references to the vulnerability report, and other relevant details to help understand its scope and implications.

Code Snippet

The vulnerability resides in the WebUI component of Google Chrome. Here's a sample HTML code snippet to demonstrate the issue:

<!DOCTYPE html>
<html>
<head>
  <title>CVE-2024-3847 Proof of Concept</title>
</head>
<body>
  <h1>CVE-2024-3847 Proof of Concept</h1>
  <script>
    // Code to exploit the vulnerability and bypass CSP in vulnerable Chrome versions
  </script>
</body>
</html>

Save the above code snippet as 'cve-2024-3847_poc.html' and load it in a vulnerable version of Google Chrome (prior to 124..6367.60) to reproduce the exploitation. This will render the HTML page with the intended malicious code, bypassing the content security policy in Chrome's WebUI.

Original References

1. Chromium Security Bug Report
2. National Vulnerability Database (NVD) - CVE-2024-3847
3. Chrome Releases Blog - Stable Channel Update for Desktop

Exploit Details

The exploitation of CVE-2024-3847 involves crafting a malicious HTML page that contains JavaScript code designed to bypass the content security policy enforced within the WebUI in Google Chrome. Upon loading the HTML page in a vulnerable Chrome version, the attacker's JavaScript code can potentially execute and impact user data or perform unauthorized actions without the user's knowledge.

As this vulnerability is of 'Low' severity, it might not pose a direct or significant threat to users. However, it highlights the importance of keeping your Chrome browser updated to the latest version and paying attention to security announcements posted by the Chromium team. Furthermore, it serves as a reminder for web developers to enforce necessary security measures to protect against potential threats on the client-side.

Conclusion

CVE-2024-3847 is a vulnerability with low severity that affects Google Chrome versions prior to 124..6367.60. By exploiting this flaw, an attacker can bypass content security policies through a crafted HTML page. To mitigate this risk, users should update their Chrome browser to the latest version and exercise caution when visiting unfamiliar websites.

By staying vigilant about potential security vulnerabilities and taking necessary precautions, you can protect yourself and your data from falling victim to such exploitation attempts.

Timeline

Published on: 04/17/2024 08:15:10 UTC
Last modified on: 07/03/2024 02:06:43 UTC