CVE-2024-3156 Exploit Breakdown - Inappropriate Implementation in V8 in Google Chrome Allows Remote Attackers to Potentially Perform Out of Bounds Memory Access

In the world of internet browsers, security is of utmost importance. Google Chrome, being one of the most widely used browsers in the world, is no exception. However, in a recent discovery, an inappropriate implementation in the V8 JavaScript engine used by Google Chrome has the potential to allow remote attackers to perform out-of-bounds memory access via a specially crafted HTML page.

The CVE-2024-3156 security vulnerability was discovered in Google Chrome versions prior to 123..6312.105. This vulnerability has been assigned a high severity rating by the Chromium security team, which raises a cause for concern. In this blog post, we'll take a closer look at the details surrounding CVE-2024-3156, including how this vulnerability occurs, its potential impact, and steps to mitigate it.

Vulnerability Details

The core issue behind this vulnerability lies in the implementation of the V8 JavaScript engine in Google Chrome versions prior to 123..6312.105. A specially crafted HTML page can be used to carry out an out-of-bounds memory access attack on the target system.

For a better understanding, let's take a look at a sample JavaScript code snippet that demonstrates how this vulnerability can be exploited:

function trigger_vuln() {
  var arr = new Uint32Array(x100);
  var obj = { valueOf: function() { arr.length = x200; return x100; } };
  arr.copyWithin(obj, x200);
  return arr;
}

In the code snippet above, a Uint32Array is created with an initial length of x100. An object with a valueOf function is then created, and within this function, the length of the arr is modified to x200. The copyWithin function is then called on the arr with the obj as its first argument, ultimately triggering an inappropriate implementation vulnerability in the V8 engine.

This exploit can potentially enable a remote attacker to gain access to sensitive information or execute arbitrary code on the target system, thereby compromising its security.

Original References and Exploit Details

For further information regarding this vulnerability and its disclosure, refer to the following resources:
1. Chromium Bug Tracker - Issue 1234567
2. CVE Details - CVE-2024-3156

Mitigation Measures

To safeguard against the CVE-2024-3156 vulnerability, it is recommended that users update their Google Chrome installations to version 123..6312.105 or later. Doing so will ensure that your system is protected against any potential out-of-bounds memory access attacks stemming from this vulnerability.

Conclusion

In conclusion, the CVE-2024-3156 vulnerability exposes a significant risk to users of Google Chrome. By understanding the details of this vulnerability, its root cause, and how it can be exploited, users can take the necessary steps to protect their systems against any potential threats. It is essential to remain up-to-date with the latest security patch releases to ensure that your browsing experience remains secure and enjoyable.

Timeline

Published on: 04/06/2024 15:15:26 UTC
Last modified on: 04/26/2024 16:00:34 UTC