Google Chrome V8 Engine Type Confusion Remote Code Execution Vulnerability (CVE-2022-4262)
Executive & SecOps Summary
SECOPS ASSESSMENTGoogle Chrome and Chromium-based browsers prior to version 108.0.5359.94
A remote attacker can exploit heap corruption via a crafted HTML page, potentially leading to arbitrary code execution within the browser process
Immediately update Google Chrome and Chromium-based browsers to the latest stable version (108.0.5359.94 or higher)
Affected Products & Version Scope
Remediation & Live Workaround Commands
PATCH & WORKAROUND1. Official Patch & Version Upgrade Commands
To update Google Chrome to the latest secure version on Linux (Ubuntu/Debian-based systems), execute the following commands:
# Update package lists and upgrade Google Chrome to the latest stable version
sudo apt-get update && sudo apt-get --only-upgrade install google-chrome-stable -y2. Temporary Workaround & Hardening Configuration
If immediate patching is not feasible, enforce strict Site Isolation and run Chrome with sandbox features enabled to mitigate potential exploitation vectors:
# Launch Chrome with forced Site Isolation and sandbox enabled
google-chrome-stable --enable-features=SitePerProcess --sandbox3. Log Audit & IoC Verification Commands
Use the following PowerShell script to audit the installed Google Chrome version on Windows endpoints and verify if it is vulnerable:
# PowerShell script to check installed Chrome version and vulnerability status
$chromePath = '${env:ProgramFiles}\Google\Chrome\Application\chrome.exe'
if (Test-Path $chromePath) {
$version = [System.Diagnostics.FileVersionInfo]::GetVersionInfo($chromePath).FileVersion
Write-Host 'Current Chrome Version:' $version
if ([System.Version]$version -lt [System.Version]'108.0.5359.94') {
Write-Warning 'WARNING: Vulnerable version detected. Immediate update required.'
} else {
Write-Host 'SECURE: Latest security patch is applied.' -ForegroundColor Green
}
} else {
Write-Host 'Google Chrome is not installed in the default path.'
}Block Kernel Privilege Escalation & Ransomware Payloads Before You Can Reboot
Protect unpatched Windows, Linux, and macOS workloads against in-memory exploitation and lateral movement with autonomous EDR.
Technical Root Cause & Exploitation Mechanics
1. Vulnerability Overview & Root Cause
This vulnerability (CVE-2022-4262) is a critical Type Confusion (CWE-843) vulnerability residing in the V8 JavaScript and WebAssembly engine of Google Chrome and Chromium. The root cause lies in how the V8 engine optimizes and compiles JavaScript objects. When there is a mismatch between the actual runtime type of an object and the type assumed by the compiler during optimization, the engine accesses memory using incorrect offsets, leading to heap corruption.
2. Exploitation Mechanics & Attack Scenario
An attacker can exploit this vulnerability by hosting a specially crafted HTML page containing malicious JavaScript. When a victim visits the malicious page, the V8 JIT (Just-In-Time) compiler triggers the type confusion during optimization. This allows the attacker to achieve out-of-bounds memory read/write capabilities, bypass browser security controls, and execute arbitrary shellcode within the context of the browser process. This vulnerability has been actively exploited in the wild and is listed in the CISA KEV catalog.
3. Infrastructure & Business Impact
Successful exploitation can lead to Remote Code Execution (RCE) on the user's endpoint. In an enterprise environment, compromising a user's browser session can serve as an initial entry point for lateral movement, allowing attackers to steal session tokens, access internal network resources, and deploy secondary payloads such as ransomware or remote access trojans (RATs).
Official Vendor Advisories & References
Type confusion in V8 in Google Chrome prior to 108.0.5359.94 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
Frequently Asked SecOps Questions (CVE-2022-4262)
FAQQ1. How critical is CVE-2022-4262 and is it actively exploited in the wild?
CVE-2022-4262 is rated CVSS 8.8 (HIGH) with a 30-day EPSS exploitation probability of 23.5%. It is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, requiring immediate emergency remediation.
Q2. Which vendors and products are affected by CVE-2022-4262?
Primary impacted vendors include google, chromium across chrome, chromium. Scope summary: Google Chrome prior to version 108.0.5359.94 (All platforms: Windows, macOS, Linux)
Q3. What temporary mitigations or workarounds exist for CVE-2022-4262 before patching?
[Mitigation] Immediately update Google Chrome and Chromium-based browsers to the latest stable version (108.0.5359.94 or higher) Follow the CLI remediation commands and interactive SecOps checklist on this page to restrict exposure prior to your maintenance window.
Generate an Internal Engineering Notice or CISO Report for CVE-2022-4262
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