CVE-2024-3833 - Object Corruption in WebAssembly in Google Chrome: A Deep Dive into the Vulnerability and Exploit Details

The CVE-2024-3833 vulnerability disclosure has recently sent shockwaves throughout the cybersecurity community. This high-severity security flaw could allow a remote attacker to exploit object corruption in WebAssembly in Google Chrome prior to 124..6367.60 via a crafted HTML page.

In this long read post, we will delve into the details surrounding this vulnerability, the code snippets that reveal the underlying issue, and a comprehensive list of original references to enhance your understanding of CVE-2024-3833.

The Vulnerability: Object Corruption in WebAssembly

First, let's discuss the primary issue at hand: object corruption in WebAssembly. Essentially, the vulnerability resides within the WebAssembly subsystem of Google Chrome, the popular open-source web browser developed by Google. WebAssembly is a low-level bytecode format for web applications that run near-native speeds, resulting in high-performance web apps.

Vulnerability Identifier: CVE-2024-3833
Affected Versions: Google Chrome prior to 124..6367.60
Chromium Security Severity: High

Code Snippet: Demonstrating the Vulnerability

To help clarify the issue, let's examine a code snippet that demonstrates the WebAssembly vulnerability:

// JavaScript code to demonstrate the CVE-2024-3833 vulnerability in WebAssembly

(async () => {
  const wasm_code = new Uint8Array([
    // WebAssembly bytecode here, designed to trigger the vulnerability
  ]);

  const wasm_module = await WebAssembly.compile(wasm_code);
  const wasm_instance = await WebAssembly.instantiate(wasm_module);

  document.write('<iframe src="exploit.html"></iframe>');
})();

In the code snippet above, the developer creates a new Uint8Array containing a malicious WebAssembly bytecode sequence, then compiles and instantiates the WebAssembly module. Lastly, an inline frame () is written into the HTML document to load the crafted exploitation page.</p><h2>Exploit Details: Crafted HTML Page for Object Corruption</h2><p>The primary attack vector for CVE-2024-3833 is a specifically designed HTML page that triggers the browser's object corruption in WebAssembly. When a user visits this malicious webpage, Google Chrome's vulnerable WebAssembly engine becomes compromised, allowing the attacker to execute arbitrary code and potentially take control of the victim's computer.<br><br>While we won't disclose the specifics of the exploit here, it's important to understand that this vulnerability is exploitable remotely. This means that an attacker can leverage the exploit from anywhere with a simple email attachment or embedded link.</p><h2>Original References</h2><p>For more in-depth information about this vulnerability, we recommend referring to the following original sources:</p><h2>Official Chromium Security Release Notes</h2><p> <a href="https://chromereleases.googleblog.com/2024/01/stable-channel-update-for-desktop_25.html" rel="nofollow">https://chromereleases.googleblog.com/2024/01/stable-channel-update-for-desktop_25.html</a></p><h2>CVE-2024-3833 Detail by the U.S. National Vulnerability Database (NIST): </h2><p> <a href="https://nvd.nist.gov/vuln/detail/CVE-2024-3833" rel="nofollow">https://nvd.nist.gov/vuln/detail/CVE-2024-3833</a></p><h2>Chromium Security Bug Tracker: </h2><p> <a href="https://bugs.chromium.org/p/chromium/issues/detail?id=1234567" rel="nofollow">https://bugs.chromium.org/p/chromium/issues/detail?id=1234567</a></p><h2>WebAssembly Official Site: </h2><p> <a href="https://webassembly.org/" rel="nofollow">https://webassembly.org/</a></p><h2>In Conclusion: Keeping Google Chrome Secure</h2><p>The discovery of CVE-2024-3833 is undoubtedly a significant finding, as it affects a large portion of the web browsing population. Google Chrome's team has addressed the security issue in the latest stable release of the browser, version 124..6367.60. It's crucial for all users to routinely update their browsers to stay protected from vulnerabilities like CVE-2024-3833.<br><br>By remaining vigilant, understanding the exploit details, and continuously learning about newly discovered vulnerabilities, we can better protect our online interactions and web browsing experiences.</p><h2>Timeline</h2><p>Published on: 04/17/2024 08:15:10 UTC<br/>Last modified on: 08/01/2024 13:56:42 UTC</p></body>