CVE-2023-4860: Inappropriate Implementation in Skia Leads to Sandbox Escape in Google Chrome Versions Prior to 115..579.98

A new security vulnerability, CVE-2023-4860, has recently been discovered within Google Chrome's Skia component. Classified as a "High" severity issue, this bug could allow a remote attacker who has successfully compromised the renderer process to perform a sandbox escape via a specially crafted HTML page. This post will dive into the details of this vulnerability and provide the necessary information for developers and users to protect themselves from any potential threats. The successful exploitation of this flaw could have significant impacts, thus vigilance and quick action are necessary to safeguard against it.

CVE-2023-4860 in Detail

The vulnerability resides in an inappropriate implementation in Skia, a popular open-source 2D graphics library used by various software projects, including Google Chrome. In vulnerable versions, a remote attacker who has already gained control of the renderer process could create a specifically crafted HTML page that would allow them to break out of the sandbox constraints. This action presents significant risks, as escaping the sandbox could allow the attacker to broaden their reach and execute further malicious operations within the affected system.

Vulnerable Google Chrome Versions

The affected versions of Google Chrome are those prior to 115..579.98. Consequently, users are urged to upgrade their browsers to this version or later to ensure that their systems are protected against CVE-2023-4860.

Code Snippet

While specific exploit code for CVE-2023-4860 has not been publicly released, the following snippet demonstrates how an attacker might create a malicious HTML page to exploit this vulnerability:

<!DOCTYPE html>
<html>
<head>
  <title>Exploit CVE-2023-4860</title>
  <script type="text/javascript">
  function triggerExploit() {
    // Code to perform the sandbox escape using Skia vulnerability
    ...snip...
  }
  </script>
</head>
<body>
  <h1>Triggering Exploit for CVE-2023-4860</h1>
  <p>Click the button below to start the exploit</p>
  <button onclick="triggerExploit()">Launch Exploit</button>
</body>
</html>

This code snippet is merely illustrative and is not intended to be utilized maliciously.

References and Mitigation Steps

For additional details on this vulnerability, consult the official Chromium issue tracker link.

To safeguard against this vulnerability, it is crucial to update Google Chrome to the latest version as soon as possible. The steps to do this are:

4. The browser should automatically check for updates and install the latest version. If necessary, restart the browser to apply the update.

By ensuring that Google Chrome is up-to-date, users can significantly mitigate the risk associated with CVE-2023-4860 and maintain a safer browsing experience.

Timeline

Published on: 07/16/2024 23:15:11 UTC
Last modified on: 08/01/2024 13:45:21 UTC

CVE-2023-4860 in Detail

Vulnerable Google Chrome Versions

Code Snippet

References and Mitigation Steps

Hover over the "Help" menu item, then click "About Google Chrome."

Timeline