CVE-2024-3834 – This is a use-after-free vulnerability in Googl... (How to Fix)

Q: What is the severity of CVE-2024-3834?

CVE-2024-3834 has a CVSS score of 8.8 (HIGH). This is a use-after-free vulnerability in Google Chrome's Downloads component that allows remote attackers to potentially exploit heap corruption via a crafted HTML page. Attackers could execute arbitrary code or cause browser crashes. All users of affected Chrome versions are vulnerable.

📋 TL;DR

This is a use-after-free vulnerability in Google Chrome's Downloads component that allows remote attackers to potentially exploit heap corruption via a crafted HTML page. Attackers could execute arbitrary code or cause browser crashes. All users of affected Chrome versions are vulnerable.

💻 Affected Systems

Products:

Google Chrome
Chromium-based browsers

Versions: All versions prior to 124.0.6367.60

Operating Systems: Windows, macOS, Linux, ChromeOS

Default Config Vulnerable: ⚠️ Yes

Notes: All standard Chrome installations are vulnerable. Enterprise deployments with older versions are particularly at risk.

📦 What is this software?

Chrome by Google

Google Chrome is the world's most popular web browser, used by over 3 billion users globally across Windows, macOS, Linux, Android, and iOS platforms. As a Chromium-based browser developed by Google, Chrome dominates the browser market with approximately 65% market share, making it a critical compon...

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⚠️ Risk & Real-World Impact

🔴

Worst Case

Remote code execution leading to full system compromise, data theft, or malware installation.

🟠

Likely Case

Browser crash (denial of service) or limited code execution within Chrome's sandbox.

🟢

If Mitigated

No impact if Chrome is updated to patched version or if exploit attempts are blocked by security controls.

🌐 Internet-Facing: HIGH - Exploitable via visiting malicious websites, which is common for internet-facing systems.

🏢 Internal Only: MEDIUM - Still exploitable via internal malicious sites or phishing, but attack surface is reduced.

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ⚠️ Yes

Complexity: MEDIUM

Exploitation requires user interaction (visiting malicious page) but no authentication. Use-after-free vulnerabilities often require specific heap manipulation.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 124.0.6367.60 and later

Vendor Advisory: https://chromereleases.googleblog.com/2024/04/stable-channel-update-for-desktop_16.html

Restart Required: Yes

Instructions:

1. Open Chrome. 2. Click three-dot menu → Help → About Google Chrome. 3. Chrome will automatically check for and install updates. 4. Click 'Relaunch' to restart Chrome with the update.

🔧 Temporary Workarounds

Disable automatic downloads

all

Configure Chrome to ask where to save each file before downloading, reducing attack surface.

chrome://settings/downloads → Toggle 'Ask where to save each file before downloading'

Use site isolation

all

Ensure site isolation is enabled to limit impact of potential exploitation.

chrome://flags/#site-isolation-trial-opt-out → Set to 'Disabled'

🧯 If You Can't Patch

Restrict browsing to trusted websites only using web filtering or proxy policies.
Implement application allowlisting to prevent execution of unknown processes from Chrome.

🔍 How to Verify

Check if Vulnerable:

Check Chrome version: If version is below 124.0.6367.60, system is vulnerable.

Check Version:

On Chrome: chrome://version/ or 'google-chrome --version' in terminal

Verify Fix Applied:

Confirm Chrome version is 124.0.6367.60 or higher after update.

📡 Detection & Monitoring

Log Indicators:

Chrome crash reports with exception codes related to memory corruption
Unexpected process termination events in system logs

Network Indicators:

HTTP requests to known malicious domains hosting exploit code
Unusual download patterns from untrusted sources

SIEM Query:

source="chrome_logs" AND (event_type="crash" OR message="*heap corruption*" OR message="*use-after-free*")

📊 Metadata

CVE ID: CVE-2024-3834

CVSS v3 Score: 8.8 (HIGH)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE: CWE-416

Published: April 17, 2024

Last Updated: November 21, 2024

🔗 References

📤 Share & Export

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