CVE-2020-16009
📋 TL;DR
This vulnerability in Chrome's V8 JavaScript engine allows attackers to execute arbitrary code through heap corruption by tricking users into visiting malicious websites. It affects all Chrome users prior to version 86.0.4240.183. Successful exploitation could lead to complete system compromise.
💻 Affected Systems
- Google Chrome
- Chromium-based browsers
📦 What is this software?
Backports Sle by Opensuse
Backports Sle by Opensuse
Cefsharp by Cefsharp
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...
Learn more about Chrome →Edge by Microsoft
Edge Chromium by Microsoft
Fedora by Fedoraproject
Fedora by Fedoraproject
Leap by Opensuse
Leap by Opensuse
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to full system compromise, data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Browser compromise allowing session hijacking, credential theft, and installation of malware on the victim's system.
If Mitigated
Limited impact with proper browser sandboxing, but potential escape from sandbox to system compromise.
🎯 Exploit Status
Exploit requires user interaction (visiting malicious page). Proof-of-concept code is publicly available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 86.0.4240.183 and later
Vendor Advisory: https://chromereleases.googleblog.com/2020/11/stable-channel-update-for-desktop.html
Restart Required: Yes
Instructions:
1. Open Chrome menu > Help > About Google Chrome. 2. Chrome will automatically check for updates and install if available. 3. Click 'Relaunch' to restart Chrome with the update.
🔧 Temporary Workarounds
Disable JavaScript
allPrevents exploitation by disabling JavaScript execution in Chrome
Use Site Isolation
allEnable site isolation to limit impact of renderer compromise
Navigate to chrome://flags/#enable-site-per-process and enable
🧯 If You Can't Patch
- Restrict browser usage to trusted websites only
- Implement network filtering to block known malicious domains
🔍 How to Verify
Check if Vulnerable:
Check Chrome version in menu > Help > About Google ChromeCheck Version:
chrome://version/ or 'google-chrome --version' on command lineVerify Fix Applied:
Verify Chrome version is 86.0.4240.183 or higher📡 Detection & Monitoring
Log Indicators:
- Chrome crash reports
- Unexpected renderer process termination
- Security event logs showing process injection
Network Indicators:
- Connections to suspicious domains hosting exploit code
- Unusual outbound traffic from Chrome processes
SIEM Query:
process_name:"chrome.exe" AND (event_id:1000 OR event_id:1001) AND description:"V8"🔗 References
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00016.html
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00017.html
- http://packetstormsecurity.com/files/159974/Chrome-V8-Turbofan-Type-Confusion.html
- https://chromereleases.googleblog.com/2020/11/stable-channel-update-for-desktop.html
- https://crbug.com/1143772
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S4XYJ7B6OXHZNYSA5J3DBUOFEC6WCAGW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SC3U3H6AISVZB5PLZLLNF4HMQ4UFFL7M/
- https://security.gentoo.org/glsa/202011-12
- https://www.debian.org/security/2021/dsa-4824
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00016.html
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00017.html
- http://packetstormsecurity.com/files/159974/Chrome-V8-Turbofan-Type-Confusion.html
- https://chromereleases.googleblog.com/2020/11/stable-channel-update-for-desktop.html
- https://crbug.com/1143772
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S4XYJ7B6OXHZNYSA5J3DBUOFEC6WCAGW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SC3U3H6AISVZB5PLZLLNF4HMQ4UFFL7M/
- https://security.gentoo.org/glsa/202011-12
- https://www.debian.org/security/2021/dsa-4824
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-16009
