CVE-2024-12692: Google Chrome V8 RCE Vulnerability

CVE-2024-12692 Overview

CVE-2024-12692 is a Type Confusion vulnerability in the V8 JavaScript engine used by Google Chrome. This vulnerability exists in versions prior to 131.0.6778.204 and allows a remote attacker to potentially exploit heap corruption through a specially crafted HTML page. V8 type confusion vulnerabilities are particularly dangerous as they can lead to arbitrary code execution within the browser context, potentially compromising user systems through malicious web content.

Critical Impact

Remote attackers can exploit heap corruption via crafted HTML pages, potentially leading to arbitrary code execution within the browser sandbox with user interaction required.

Affected Products

• Google Chrome versions prior to 131.0.6778.204
• Chromium-based browsers using affected V8 engine versions
• Desktop platforms (Windows, macOS, Linux) running vulnerable Chrome versions

Discovery Timeline

• 2024-12-18 - CVE-2024-12692 published to NVD
• 2025-02-11 - Last updated in NVD database

Technical Details for CVE-2024-12692

Vulnerability Analysis

This vulnerability is classified as CWE-843 (Access of Resource Using Incompatible Type, also known as Type Confusion). Type confusion vulnerabilities in V8 occur when the JavaScript engine incorrectly handles object types during execution, leading to memory corruption. In V8's optimizing compiler, type assumptions are made during Just-In-Time (JIT) compilation to improve performance. When these assumptions are violated through carefully constructed JavaScript code, the engine may access memory using an incorrect type interpretation.

The vulnerability requires user interaction—specifically, the victim must navigate to a malicious webpage containing crafted HTML and JavaScript. Once triggered, the type confusion can corrupt heap memory structures, potentially allowing an attacker to achieve arbitrary read/write primitives within the renderer process.

Root Cause

The root cause lies in V8's type handling mechanism where the engine makes incorrect assumptions about object types during optimization passes. When JavaScript code is compiled by V8's TurboFan optimizing compiler, certain type guards may be incorrectly eliminated or bypassed, leading to a situation where an object is accessed as if it were a different type. This type mismatch results in heap corruption as memory is interpreted with incorrect size and structure assumptions.

Attack Vector

The attack is network-based, requiring the attacker to lure a victim to a malicious webpage. The crafted HTML page contains JavaScript code designed to trigger the type confusion condition in V8. The attack flow typically involves:

1. Victim navigates to attacker-controlled webpage
2. Malicious JavaScript triggers JIT compilation with specific code patterns
3. Type confusion occurs during optimized code execution
4. Heap corruption enables potential memory manipulation
5. Attacker may achieve code execution within the renderer sandbox

The vulnerability requires no special privileges and can be triggered through normal browser navigation, though user interaction is required to visit the malicious page.

Detection Methods for CVE-2024-12692

Indicators of Compromise

• Unexpected Chrome renderer process crashes or hangs when visiting untrusted websites
• Anomalous memory usage patterns in Chrome processes
• Browser stability issues following visits to suspicious or unknown web pages
• Security software alerts related to heap corruption or memory access violations in Chrome

Detection Strategies

• Monitor endpoint protection logs for Chrome crash reports indicating V8-related exceptions
• Implement network monitoring to detect connections to known malicious domains serving exploit code
• Deploy browser isolation solutions to contain potential exploitation attempts
• Use SentinelOne's behavioral AI to detect anomalous process behavior following browser exploitation

Monitoring Recommendations

• Enable Chrome's built-in crash reporting to identify potential exploitation attempts
• Monitor security advisory feeds from Google for updates on active exploitation
• Track Chrome version deployment across the organization to identify vulnerable endpoints
• Implement centralized browser management to ensure timely patch deployment

How to Mitigate CVE-2024-12692

Immediate Actions Required

• Update Google Chrome to version 131.0.6778.204 or later immediately
• Enable automatic Chrome updates across all managed endpoints
• Audit enterprise browser deployments to identify unpatched systems
• Consider restricting access to untrusted websites until patching is complete

Patch Information

Google has released a stable channel update addressing this vulnerability. The patch is included in Chrome version 131.0.6778.204 and later releases. Organizations should update immediately through standard Chrome update mechanisms or enterprise deployment tools. For detailed patch information, refer to the Google Chrome Desktop Update announcement. Additional technical details are tracked in Chromium Issue Tracker #382291459.

Workarounds

• Enable Chrome's Site Isolation feature to limit cross-origin exploitation potential
• Consider deploying browser isolation solutions for high-risk users until patching is complete
• Restrict JavaScript execution on untrusted sites using Chrome's site permissions or enterprise policies
• Use SentinelOne endpoint protection to detect and prevent post-exploitation activity

# Force Chrome update via command line (Windows)
# Check for updates through Chrome settings or use enterprise management tools
"C:\Program Files\Google\Chrome\Application\chrome.exe" --check-for-update

# Verify Chrome version to confirm patch applied
# Target version: 131.0.6778.204 or later
chrome://settings/help