CVE-2023-7024
📋 TL;DR
This vulnerability is a heap buffer overflow in WebRTC within Google Chrome that allows remote attackers to potentially exploit heap corruption via a crafted HTML page. Attackers could execute arbitrary code or cause denial of service. All users running vulnerable versions of Chrome are affected.
💻 Affected Systems
- Google Chrome
- Chromium-based browsers
📦 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 complete system compromise, data theft, or ransomware deployment.
Likely Case
Browser crash/denial of service, potential information disclosure, or limited code execution within browser sandbox.
If Mitigated
Browser crash with no further impact if sandboxing holds, though sandbox escape is possible with heap corruption.
🎯 Exploit Status
Heap corruption vulnerabilities require careful exploitation but WebRTC is a complex attack surface. No public exploit available as of advisory dates.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 120.0.6099.129 and later
Vendor Advisory: https://chromereleases.googleblog.com/2023/12/stable-channel-update-for-desktop_20.html
Restart Required: Yes
Instructions:
1. Open Chrome. 2. Click three-dot menu → Help → About Google Chrome. 3. Chrome will automatically check for updates and install version 120.0.6099.129 or later. 4. Click 'Relaunch' to restart Chrome.
🔧 Temporary Workarounds
Disable WebRTC
allDisables WebRTC functionality which removes the vulnerable component but breaks video/audio calling features.
chrome://flags/#disable-webrtc
Set 'WebRTC' flag to 'Disabled'
Use browser extensions to block WebRTC
allInstall extensions like 'WebRTC Leak Prevent' or 'uBlock Origin' with WebRTC blocking enabled.
🧯 If You Can't Patch
- Deploy network filtering to block malicious websites and phishing attempts.
- Implement application control to restrict browser usage to patched versions only.
🔍 How to Verify
Check if Vulnerable:
Check Chrome version: If version is less than 120.0.6099.129, system is vulnerable.Check Version:
On Chrome: chrome://version/ or 'google-chrome --version' on Linux command lineVerify Fix Applied:
Confirm Chrome version is 120.0.6099.129 or higher after update.📡 Detection & Monitoring
Log Indicators:
- Chrome crash logs with WebRTC-related stack traces
- Unexpected Chrome process termination events
Network Indicators:
- Unusual WebRTC STUN/TURN traffic patterns
- Requests to known malicious domains hosting exploit code
SIEM Query:
source="chrome_crash_logs" AND (process="chrome" OR process="chromium") AND message="*WebRTC*" AND message="*heap*"🔗 References
- https://chromereleases.googleblog.com/2023/12/stable-channel-update-for-desktop_20.html
- https://crbug.com/1513170
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6M6AJDHUL6EDPURWQXGLUFJNDE7SOJT3/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U6JL4VHZMHFGEGQYTF74533ZNRWMCMMR/
- https://security.gentoo.org/glsa/202401-34
- https://www.debian.org/security/2023/dsa-5585
- https://chromereleases.googleblog.com/2023/12/stable-channel-update-for-desktop_20.html
- https://crbug.com/1513170
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6M6AJDHUL6EDPURWQXGLUFJNDE7SOJT3/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U6JL4VHZMHFGEGQYTF74533ZNRWMCMMR/
- https://security.gentoo.org/glsa/202401-34
- https://www.debian.org/security/2023/dsa-5585
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-7024
