CVE-2020-6419 – This vulnerability allows remote attackers to e... (How to Fix)

Q: What is the severity of CVE-2020-6419?

CVE-2020-6419 has a CVSS score of 8.8 (HIGH). This vulnerability allows remote attackers to execute arbitrary code or cause heap corruption in Google Chrome by tricking users into visiting a malicious webpage. It affects all users running Chrome versions prior to 81.0.4044.92 on any operating system.

📋 TL;DR

This vulnerability allows remote attackers to execute arbitrary code or cause heap corruption in Google Chrome by tricking users into visiting a malicious webpage. It affects all users running Chrome versions prior to 81.0.4044.92 on any operating system.

💻 Affected Systems

Products:

Google Chrome
Chromium-based browsers

Versions: All versions prior to 81.0.4044.92

Operating Systems: Windows, macOS, Linux, Android, iOS

Default Config Vulnerable: ⚠️ Yes

Notes: All default Chrome installations are vulnerable. Other Chromium-based browsers 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...

Learn more about Chrome →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Remote code execution leading to full system compromise, data theft, or ransomware deployment.

🟠

Likely Case

Browser crash, memory corruption, or limited code execution within the browser sandbox.

🟢

If Mitigated

No impact if Chrome is fully patched or if exploit attempts are blocked by security controls.

🌐 Internet-Facing: HIGH

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ⚠️ Yes

Weaponized: LIKELY

Unauthenticated Exploit: ⚠️ Yes

Complexity: MEDIUM

Exploitation requires user interaction (visiting malicious page). Proof-of-concept code exists in bug reports.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 81.0.4044.92 and later

Vendor Advisory: https://chromereleases.googleblog.com/2020/04/stable-channel-update-for-desktop_7.html

Restart Required: Yes

Instructions:

1. Open Chrome. 2. Click menu (three dots) → Help → About Google Chrome. 3. Chrome will automatically check for and install updates. 4. Click 'Relaunch' to restart Chrome.

🔧 Temporary Workarounds

Disable JavaScript

all

Prevents exploitation by disabling JavaScript execution in Chrome

chrome://settings/content/javascript → Block

Use Site Isolation

all

Enables site isolation to limit impact of memory corruption

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

🧯 If You Can't Patch

Use alternative browser until Chrome can be updated
Implement web filtering to block known malicious sites

🔍 How to Verify

Check if Vulnerable:

Check Chrome version in About Google Chrome page

Check Version:

google-chrome --version

Verify Fix Applied:

Confirm version is 81.0.4044.92 or higher

📡 Detection & Monitoring

Log Indicators:

Chrome crash reports
Unexpected process termination

Network Indicators:

Requests to known exploit domains
Suspicious JavaScript execution patterns

SIEM Query:

source="chrome" AND (event="crash" OR event="process_termination")

📊 Metadata

CVE ID: CVE-2020-6419

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-787

Published: June 3, 2020

Last Updated: November 21, 2024

🔗 References

https://chromereleases.googleblog.com/2020/04/stable-channel-update-for-desktop_7.html Vendor Advisory
https://crbug.com/1040325 Exploit,Issue Tracking,Patch,Vendor Advisory
https://chromereleases.googleblog.com/2020/04/stable-channel-update-for-desktop_7.html Vendor Advisory
https://crbug.com/1040325 Exploit,Issue Tracking,Patch,Vendor Advisory

📤 Share & Export

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🔗 Related Vulnerabilities

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