Google Chrome V8 Type Confusion Remote Code Execution Vulnerability (CVE-2024-4947)
Executive & SecOps Summary
SECOPS ASSESSMENTGoogle Chrome and Chromium-based browsers prior to version 125.0.6422.60
A remote attacker can execute arbitrary code within the browser sandbox by enticing a user to visit a specially crafted HTML page
Immediately update Google Chrome and Chromium-based browsers to the latest stable version (125.0.6422.60 or higher)
Affected Products & Version Scope
Remediation & Live Workaround Commands
PATCH & WORKAROUND1. Official Patch & Version Upgrade Commands
Update Google Chrome to the latest stable release. For Linux-based enterprise environments, use the system package manager to apply the update immediately.
# Update Google Chrome on Debian/Ubuntu-based systems
sudo apt-get update && sudo apt-get --only-upgrade install google-chrome-stable -y
# Update Google Chrome on RedHat/Fedora-based systems
sudo dnf upgrade google-chrome-stable -y2. Temporary Workaround & Hardening Configuration
If immediate patching is not feasible, enforce browser update policies via registry settings or Group Policy Objects (GPO) to ensure automatic updates are applied upon browser restart.
# Force Google Chrome auto-updates via Windows Registry
New-Item -Path 'HKLM:\SOFTWARE\Policies\Google\Update' -Force
New-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Google\Update' -Name 'UpdateDefault' -PropertyType DWord -Value 1 -Force3. Log Audit & IoC Verification Commands
Run the following script to audit the currently installed Chrome version across your Linux endpoints to identify vulnerable instances.
# Check installed Chrome version and verify patch status
CURRENT_VER=$(google-chrome --version | awk '{print $3}')
SAFE_VER='125.0.6422.60'
if [ '$(printf '%s\
' '$SAFE_VER' '$CURRENT_VER' | sort -V | head -n1)' = '$SAFE_VER' ]; then
echo '[SAFE] Chrome is patched. Version: '$CURRENT_VER
else
echo '[VULNERABLE] Action Required. Current Version: '$CURRENT_VER'. Upgrade to '$SAFE_VER' or higher.'
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Technical Root Cause & Exploitation Mechanics
1. Vulnerability Overview & Root Cause
This vulnerability (CVE-2024-4947) is a critical Type Confusion (CWE-843) flaw residing in the V8 JavaScript and WebAssembly engine of Google Chrome and Chromium. The root cause lies in the engine's JIT compiler failing to properly validate the runtime types of objects during optimization phases. This logical discrepancy allows the engine to perform memory operations on an object using an incorrect type definition, leading to out-of-bounds memory access.
2. Exploitation Mechanics & Attack Scenario
An attacker exploits this vulnerability by hosting a malicious HTML page containing crafted JavaScript code. When a target user visits the page, the V8 engine compiles the malicious script. By triggering the type confusion state, the attacker gains arbitrary read/write capabilities within the renderer process memory, enabling them to bypass memory protections and execute arbitrary shellcode inside the browser's sandbox.
3. Infrastructure & Business Impact
With a CVSS score of 9.6 (Critical) and active exploitation confirmed in the wild (listed in CISA KEV), this vulnerability poses an immediate threat to enterprise environments. Successful exploitation can lead to complete compromise of the user's workstation, data exfiltration, and serve as an initial entry point for lateral movement within the corporate network.
Official Vendor Advisories & References
Type Confusion in V8 in Google Chrome prior to 125.0.6422.60 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
Frequently Asked SecOps Questions (CVE-2024-4947)
FAQQ1. How critical is CVE-2024-4947 and is it actively exploited in the wild?
CVE-2024-4947 is rated CVSS 9.6 (CRITICAL) with a 30-day EPSS exploitation probability of 15.2%. It is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, requiring immediate emergency remediation.
Q2. Which vendors and products are affected by CVE-2024-4947?
Primary impacted vendors include google, chromium across chrome, v8. Scope summary: Google Chrome versions prior to 125.0.6422.60 on Windows, macOS, and Linux, as well as other browsers utilizing the affected Chromium engine
Q3. What temporary mitigations or workarounds exist for CVE-2024-4947 before patching?
[Mitigation] Immediately update Google Chrome and Chromium-based browsers to the latest stable version (125.0.6422.60 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-2024-4947
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