Overview
CVE-2024-7021 describes a security vulnerability in the Autofill feature of Google Chrome on Windows, affecting versions prior to 124.0.6367.60. This vulnerability allows a remote attacker to potentially perform UI spoofing by crafting a malicious HTML page. The Chromium security team rated this vulnerability as having a “Medium” severity.
Technical Details
The root cause of CVE-2024-7021 lies in an “inappropriate implementation” within the Autofill functionality of Chrome. This flaw enables a specially crafted HTML page to manipulate the displayed Autofill UI, potentially misleading the user. While the exact mechanism remains undisclosed, the vulnerability could involve techniques that either overwrite or obscure legitimate UI elements within the Autofill dropdown, or by injecting deceptive elements that mimic authentic Autofill suggestions. This allows an attacker to trick the user into providing sensitive information to a malicious source.
The Chromium issue tracker provides some more details on the underlying cause.
CVSS Analysis
Unfortunately, a CVSS score for CVE-2024-7021 is currently not available. However, Chromium rated this as “Medium” severity, which is a good indicator of its potential risk. A CVSS score would provide more insight, but in the meantime, it should be treated as a vulnerability with moderate risk.
Possible Impact
Successful exploitation of CVE-2024-7021 could lead to UI spoofing attacks. An attacker could create a website that appears legitimate but displays a fake Autofill prompt. A user, believing they are filling in a trusted form, might inadvertently provide sensitive information such as:
- Passwords
- Credit card details
- Addresses
- Other personal information
This information could then be used for identity theft, financial fraud, or other malicious purposes.
Mitigation and Patch Steps
The primary mitigation for CVE-2024-7021 is to update your Google Chrome browser to version 124.0.6367.60 or later. Google released a patch addressing this vulnerability in that version. To update Chrome:
- Click the three dots (Menu) in the upper-right corner of the Chrome window.
- Go to Help > About Google Chrome.
- Chrome will automatically check for updates and install them.
- Restart Chrome to complete the update process.
It is highly recommended to enable automatic updates for Chrome to ensure you receive security patches promptly.
References
Chrome Releases: Stable Channel Update for Desktop
Chromium Issue Tracker: Issue 40064701
