CVE-2020-16014
📋 TL;DR
This is a use-after-free vulnerability in Chrome's Pepper Plugin API (PPAPI) that allows an attacker who has already compromised the renderer process to escape the browser sandbox. It affects Google Chrome versions prior to 87.0.4280.66. Users visiting malicious websites could have their systems fully compromised.
💻 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...
Learn more about Chrome →⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise - attacker gains full control of the victim's machine, can install malware, steal data, and pivot to other systems.
Likely Case
Remote code execution with system-level privileges, enabling data theft, ransomware deployment, or persistent backdoor installation.
If Mitigated
Limited to renderer process compromise only, preventing system-level access if sandbox holds.
🎯 Exploit Status
Requires renderer process compromise first, then sandbox escape. Often chained with other vulnerabilities.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 87.0.4280.66 and later
Vendor Advisory: https://chromereleases.googleblog.com/2020/11/stable-channel-update-for-desktop_17.html
Restart Required: Yes
Instructions:
1. Open Chrome menu > Help > About Google Chrome. 2. Browser will automatically check for and apply update. 3. Click 'Relaunch' when prompted. 4. Verify version is 87.0.4280.66 or higher.
🔧 Temporary Workarounds
Disable PPAPI plugins
allDisable Pepper Plugin API to prevent exploitation vector
chrome://flags/#enable-nacl
Set to 'Disabled'
Enable site isolation
allEnhances sandboxing between websites
chrome://flags/#enable-site-per-process
Set to 'Enabled'
🧯 If You Can't Patch
- Restrict web browsing to trusted sites only using browser policies
- Deploy application whitelisting to prevent unauthorized code execution
🔍 How to Verify
Check if Vulnerable:
Check Chrome version: if below 87.0.4280.66, system is vulnerable.Check Version:
chrome://version/ or 'google-chrome --version' (Linux)Verify Fix Applied:
Confirm Chrome version is 87.0.4280.66 or higher in About Google Chrome.📡 Detection & Monitoring
Log Indicators:
- Chrome crash reports with PPAPI-related errors
- Unexpected child process termination
- Sandbox violation logs
Network Indicators:
- Connections to known exploit hosting domains
- Unusual outbound traffic post-browser crash
SIEM Query:
source="chrome_logs" AND (event="crash" OR event="sandbox_violation") AND process="ppapi"