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CVE-2023-5486: Inappropriate Input Implementation in Google Chrome Allows Remote Security UI Spoofing

Poster -

Google Chrome is one of the most widely used web browsers in the world, offering features such as security, performance, and a clean user interface. However, vulnerabilities can sometimes be discovered, potentially allowing ill-intentioned individuals to take advantage of them. In this blog post, we will discuss a recent vulnerability found in Google Chrome with the identifier CVE-2023-5486. This vulnerability is related to an inappropriate input implementation that allowed a remote attacker to spoof security UI via a crafted HTML page.

Exploit Details

The vulnerability in question is classified under the Chromium security severity as Low. Prior to Google Chrome version 118..5993.70, it appeared due to a faulty implementation in user input processing. The vulnerability made it possible for a remote attacker to fill crafted input fields in HTML forms, ultimately allowing them to spoof security UI features.

Here's a code snippet to demonstrate the vulnerability

<!DOCTYPE html>
<html>
  <head>
    <script>
      // Malicious JavaScript code
      function exploit() {
        let input = document.getElementById("vulnInput");
        input.setRangeText("Spoofed content");
      }
    </script>
  </head>
  <body>
    <form>
      <input type="text" id="vulnInput" />
      <button type="button" onClick="exploit()">Spoof</button>
    </form>
  </body>
</html>

With this code, the attacker takes advantage of the vulnerable input implementation by injecting the "Spoofed content" string into the input field when the "Spoof" button is clicked. In real-world scenarios, this vulnerability can potentially lead to misleading users with fake security indicators or maliciously crafted site information.

Official References

The Chromium team acknowledged this vulnerability and provided an official patch within Google Chrome version 118..5993.70. To learn more about this issue, you may visit the following references:

- Chromium Bug Tracker: Issue 1048528
- NVD (National Vulnerability Database): CVE-2023-5486

Mitigation

The best course of action to protect yourself from this vulnerability is to update your Google Chrome browser to version 118..5993.70 or later. It is always a good practice to keep your software up-to-date to minimize the risk of being affected by known vulnerabilities.

Go to Help > About Google Chrome.

3. This will open a new tab with your current Chrome version, and it will automatically check for updates. If there's an update available, you will be prompted to install it.

Conclusion

Although this vulnerability is labeled with a low severity, it demonstrates that vulnerabilities can sometimes be found even in widely-used software like Google Chrome. As a user, it is important to keep your software updated and stay informed about potential vulnerabilities that could affect your security and privacy. By proactively taking measures, you can prevent becoming a victim of malicious individuals exploiting known vulnerabilities such as CVE-2023-5486.

Timeline

Published on: 10/11/2023 23:15:00 UTC
Last modified on: 10/13/2023 02:15:00 UTC