CVE-2022-0102: Google Chrome V8 RCE Vulnerability

CVE-2022-0102 Overview

CVE-2022-0102 is a type confusion vulnerability in the V8 JavaScript engine used by Google Chrome prior to version 97.0.4692.71. This vulnerability allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. Type confusion vulnerabilities in V8 are particularly dangerous as they can lead to arbitrary code execution within the browser sandbox.

Critical Impact

Remote attackers can exploit heap corruption through malicious web content, potentially leading to arbitrary code execution in the context of the user's browser session.

Affected Products

• Google Chrome prior to version 97.0.4692.71
• Fedora Project Fedora 34
• Fedora Project Fedora 35
• Fedora Project Fedora 36

Discovery Timeline

• 2022-02-12 - CVE-2022-0102 published to NVD
• 2024-11-21 - Last updated in NVD database

Technical Details for CVE-2022-0102

Vulnerability Analysis

This vulnerability stems from a type confusion issue (CWE-843) in the V8 JavaScript engine. Type confusion occurs when code doesn't verify the type of an object before performing operations on it, leading to accessing memory with an incorrect type interpretation. In the context of V8, type confusion can allow attackers to manipulate JavaScript objects in ways that lead to heap corruption.

The vulnerability requires user interaction where the victim must navigate to a malicious webpage containing the crafted HTML payload. Once triggered, the type confusion can corrupt heap memory, potentially allowing attackers to gain control over program execution flow within the browser process.

Root Cause

The root cause is a type confusion bug in V8, Chrome's JavaScript engine. V8 uses type inference and optimization techniques for performance, and flaws in type handling can lead to situations where the engine incorrectly interprets the type of an object. This misinterpretation allows operations to be performed on memory regions with incorrect type assumptions, leading to heap corruption when the actual object layout differs from what the code expects.

Attack Vector

The attack is network-based and requires user interaction. An attacker would need to:

1. Host a malicious webpage containing specially crafted HTML and JavaScript code
2. Lure a victim to visit the malicious page through social engineering, phishing, or by compromising a legitimate website
3. The crafted JavaScript triggers the type confusion in V8
4. The resulting heap corruption can be exploited to achieve arbitrary code execution within the renderer process

The vulnerability is exploited through crafted HTML pages that contain malicious JavaScript designed to trigger the type confusion condition in the V8 engine. When the victim's browser processes this content, the type confusion leads to heap corruption that attackers can leverage for further exploitation.

Detection Methods for CVE-2022-0102

Indicators of Compromise

• Unexpected Chrome renderer process crashes or abnormal termination patterns
• Browser stability issues when visiting specific websites
• Unusual JavaScript execution patterns or memory consumption spikes
• Crash reports indicating V8 heap corruption or type-related errors

Detection Strategies

• Monitor for Chrome crash reports referencing V8 or heap corruption
• Implement web content filtering to block access to known malicious domains
• Deploy endpoint detection solutions capable of monitoring browser process behavior
• Enable Chrome's built-in crash reporting and analyze for patterns consistent with exploitation attempts

Monitoring Recommendations

• Track Chrome version deployment across the organization to identify unpatched instances
• Monitor network traffic for connections to suspicious or newly registered domains
• Review browser crash telemetry for signs of exploitation attempts
• Implement browser isolation technologies for high-risk user populations

How to Mitigate CVE-2022-0102

Immediate Actions Required

• Update Google Chrome to version 97.0.4692.71 or later immediately
• Enable automatic updates for Chrome browser across all managed endpoints
• For Fedora users, apply the latest security updates from the package repositories
• Restrict browsing to trusted websites until patches are applied

Patch Information

Google has addressed this vulnerability in Chrome version 97.0.4692.71. The fix was announced in the Chrome Stable Channel Update. Additional technical details are available in the Chromium Bug Report.

For Fedora users, security updates have been released and are available through the standard package management system. Refer to the Fedora Package Announcement for details on the available updates for affected Fedora versions.

Workarounds

• Implement browser isolation or sandboxing technologies to contain potential exploitation
• Use web content filtering to block access to untrusted or suspicious websites
• Consider using alternative browsers temporarily if Chrome cannot be immediately updated
• Disable JavaScript execution for untrusted websites using browser extensions or policies

# Verify Chrome version on Linux
google-chrome --version

# Update Chrome on Fedora
sudo dnf update chromium --refresh

# Check for available security updates on Fedora
sudo dnf check-update --security