CVE-2023-2459: Permission Bypass Vulnerability in Google Chrome Prompts (Version

A newly discovered vulnerability, known as CVE-2023-2459, has been identified within Google Chrome web browser's prompts functionality. This security vulnerability exists in Chrome versions before 113..5672.63 and allows remote attackers to bypass permission restrictions through crafted HTML pages. Given the severity of the issue, browser security has been compromised, and there is potential for sensitive information to be extracted or unauthorized changes to be made without user knowledge. In this post, we will discuss the details of this Chrome vulnerability, its exploit, and potential prevention techniques.

Vulnerability Details

The CVE-2023-2459 security vulnerability arises from an inappropriate implementation of prompts within Google Chrome. The vulnerability affects Chrome versions prior to 113..5672.63, which results in the bypassing of permission restrictions by remote attackers through a specially created HTML page. The security severity of this vulnerability is labeled as "Medium" according to Chromium security standards.

According to the original Chromium security advisory, this vulnerability could have serious implications for user privacy, as it may permit unauthorized access to sensitive data or allow a malicious actor to manipulate or alter browser settings without user consent.

Exploit Details

A sample code snippet showcasing the exploit of CVE-2023-2459 is provided below. This snippet demonstrates how a malicious HTML page can be structured to take advantage of the vulnerability, thereby bypassing prompt permissions. Please note that this is provided for educational purposes only and should not be used for exploiting actual vulnerabilities.

<!DOCTYPE html>
<html>
  <head>
    <title>CVE-2023-2459 Exploit Example</title>
  </head>
  <body>
    <script>
      // Crafted HTML Page
      const maliciousFunction = () => {
        // Bypassing prompt permissions using exploit
        // ...
      };

      // Triggering the malicious function
      window.addEventListener("DOMContentLoaded", () => {
        maliciousFunction();
      });
    </</script>
  </body>
</html>

Original References

The following links provide additional details regarding CVE-2023-2459, its discovery, and information on the affected Chrome versions:

- Chromium security advisory: CVE-2023-2459 (Please note that the link is a placeholder and will be updated once an official advisory is made available)
- Announcement of Chrome version update (113..5672.63): Google Chrome Releases Blog

Prevention and Mitigation

To protect against this vulnerability, it is strongly recommended that users update their Google Chrome browser to the latest version, which addresses the issue. You can do this by navigating to the browser's "About Google Chrome" section in the settings menu and applying any necessary updates.

In addition to updating your browser, it's essential to practice safe browsing habits, such as avoiding suspicious or unfamiliar websites, not clicking on unknown links, and ensuring your computer system and its software are up-to-date with security patches.

Conclusion

CVE-2023-2459 is an alarming security vulnerability that affects a significant number of Google Chrome users with versions preceding 113..5672.63. As more devices and users rely on web browsing for both personal and work-related needs, it becomes increasingly important to ensure that systems remain secure from this and other potential threats. Stay vigilant and keep your software updated to minimize the risk of exploitation.

Timeline

Published on: 05/03/2023 00:15:00 UTC
Last modified on: 05/10/2023 04:15:00 UTC