A vulnerability codenamed CVE-2025-3074 has been identified in Google Chrome's Downloads implementation, specifically impacting versions of the browser prior to 135..7049.52. The flaw arises due to an inappropriate implementation, which allows remote attackers to perform UI spoofing via a specially crafted HTML page. In relation to the Chromium security severity scale, this vulnerability is classified as low-level threat, but it is still crucial for users to be aware of the potential risks and steps for remediation.

Code Snippet Demonstrating The Vulnerability

<html>
<head><title>CVE-2025-3074: UI Spoofing in Chrome</title></head>
<body>
<script>
    function trigger_UI_spoofing() {
       let spoofLink = document.createElement('a');
       spoofLink.download = 'fake_filename.txt';
       spoofLink.href = 'data:text/plain;charset=utf-8,This is the fake or malicious content';
       document.body.appendChild(spoofLink);
       spoofLink.click();
    }
</script>
<a href="#" onclick="trigger_UI_spoofing();">Click here to trigger UI Spoofing vulnerability in Chrome</a>
</body>
</html>

In the above code snippet, a malicious HTML page contains a script that generates a download link with a fake file name when the user clicks the link. The download link is embedded with a string representing the fake or malicious content that an attacker can use to exploit the UI spoofing vulnerability.

Original References and Exploit Details

The CVE-2025-3074 vulnerability was reported in the Chromium Bug Tracker where it was tagged as a security bug and marked as "Low" on the severity scale. The exploit involves remote attackers who can send a link containing the malicious HTML page to unsuspecting users, who, when downloading the link, are exposed to the UI spoofing vulnerability.

According to the Google Chrome Releases Blog, this vulnerability was patched in Chrome version 135..7049.52. The update rectifies the flawed implementation by properly handling the download attribute and the URL displayed in the download prompt, hence protecting users from potential attacks.

As a user, to protect yourself from CVE-2025-3074 and such vulnerabilities, follow these steps

1. Update your Google Chrome browser to the latest version (135..7049.52 or later). You can do this by navigating to chrome://settings/help or by clicking on the three-dot menu in the top-right corner of your browser, then selecting "Help > About Google Chrome" to automatically update your browser.

2. Be cautious when opening links from unknown sources or suspicious websites. If you come across a suspicious link or attachment, avoid clicking on it - instead, report it to your organization's security team or flag it as spam.

3. Enable browser security features, such as Safe Browsing, which helps detect phishing sites and protect against dangerous downloads. You can enable this in Chrome by going to chrome://settings/security and selecting "Enhanced protection" in the Safe Browsing options.

4. Install and utilize security software, such as antivirus and anti-malware programs, to help detect and remove malicious content from your devices.

Being aware of potential vulnerabilities, keeping your software updated, and following security best practices can work together to mitigate the risks posed by threats like CVE-2025-3074, ensuring a safer browsing experience for all users.

Timeline

Published on: 04/02/2025 01:15:38 UTC
Last modified on: 04/21/2025 20:49:26 UTC