CVE-2024-6293 – This is a use-after-free vulnerability in Dawn ... (How to Fix)

Q: What is the severity of CVE-2024-6293?

CVE-2024-6293 has a CVSS score of 8.8 (HIGH). This is a use-after-free vulnerability in Dawn (WebGPU implementation) in Google Chrome 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 when visiting malicious websites.

📋 TL;DR

This is a use-after-free vulnerability in Dawn (WebGPU implementation) in Google Chrome 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 when visiting malicious websites.

💻 Affected Systems

Products:

Google Chrome
Chromium-based browsers

Versions: Prior to 126.0.6478.126

Operating Systems: Windows, macOS, Linux, ChromeOS

Default Config Vulnerable: ⚠️ Yes

Notes: All default Chrome configurations are vulnerable. Other browsers using Chromium may also be affected.

📦 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 installation of persistent malware.

🟠

Likely Case

Browser crashes (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 user behavior.

🏢 Internal Only: MEDIUM - Requires user interaction with malicious content, but internal phishing or compromised sites could still trigger exploitation.

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ⚠️ Yes

Complexity: MEDIUM

Requires user to visit malicious website but no authentication needed. Use-after-free vulnerabilities often require specific heap grooming.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 126.0.6478.126 and later

Vendor Advisory: https://chromereleases.googleblog.com/2024/06/stable-channel-update-for-desktop_24.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 WebGPU

all

Temporarily disable the vulnerable Dawn/WebGPU component via Chrome flags

chrome://flags/#enable-webgpu → Disabled

Use site isolation

all

Ensure site isolation is enabled to limit impact of potential exploitation

chrome://flags/#enable-site-per-process → Enabled

🧯 If You Can't Patch

Restrict web browsing to trusted sites only using browser policies
Deploy web filtering to block known malicious sites and suspicious HTML content

🔍 How to Verify

Check if Vulnerable:

Check Chrome version: if below 126.0.6478.126, you are vulnerable.

Check Version:

chrome://version/ or 'google-chrome --version' (Linux) or check About Chrome

Verify Fix Applied:

Confirm Chrome version is 126.0.6478.126 or higher after update.

📡 Detection & Monitoring

Log Indicators:

Chrome crash reports with memory corruption signatures
Unexpected Chrome process termination

Network Indicators:

Requests to known malicious domains serving crafted HTML
Unusual WebGPU API usage patterns

SIEM Query:

source="chrome_crash_reports" AND (message="heap corruption" OR message="use-after-free")

📊 Metadata

CVE ID: CVE-2024-6293

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: June 24, 2024

Last Updated: December 26, 2024

🔗 References

https://chromereleases.googleblog.com/2024/06/stable-channel-update-for-desktop_24.html Release Notes
https://issues.chromium.org/issues/345993680 Exploit,Issue Tracking
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T6OJ65HWXYSYMH55VDO6N36EOZFUNL4O/ Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WHV5WTU27YOIBIM2CON42SHWY6J2HPRS/ Mailing List
https://chromereleases.googleblog.com/2024/06/stable-channel-update-for-desktop_24.html Release Notes
https://issues.chromium.org/issues/345993680 Exploit,Issue Tracking
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T6OJ65HWXYSYMH55VDO6N36EOZFUNL4O/ Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WHV5WTU27YOIBIM2CON42SHWY6J2HPRS/ Mailing List

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