CVE-2024-8905: Google Chrome V8 RCE Vulnerability

CVE-2024-8905 Overview

CVE-2024-8905 is a stack corruption vulnerability in the V8 JavaScript engine used by Google Chrome. The flaw stems from an inappropriate implementation that allows remote attackers to potentially exploit stack corruption through a specially crafted HTML page. This vulnerability affects Google Chrome versions prior to 129.0.6668.58 and has been classified with medium severity by the Chromium security team.

Critical Impact

Remote attackers can potentially achieve code execution by exploiting stack corruption through malicious web content, requiring only user interaction (visiting a crafted webpage) to trigger the vulnerability.

Affected Products

• Google Chrome versions prior to 129.0.6668.58
• Chromium-based browsers using vulnerable V8 engine versions
• All platforms (Windows, macOS, Linux) running affected Chrome versions

Discovery Timeline

• 2024-09-17 - CVE-2024-8905 published to NVD
• 2025-01-02 - Last updated in NVD database

Technical Details for CVE-2024-8905

Vulnerability Analysis

This vulnerability (CWE-787: Out-of-Bounds Write, CWE-122: Heap-based Buffer Overflow) exists within Google Chrome's V8 JavaScript engine, which is responsible for parsing and executing JavaScript code in the browser. The inappropriate implementation allows for stack corruption when processing specially crafted JavaScript or HTML content.

V8 is a critical component that handles all JavaScript execution in Chrome and Chromium-based browsers. When the engine processes malformed input through a crafted HTML page, it can lead to memory corruption on the stack. This type of vulnerability is particularly dangerous as it can potentially allow attackers to manipulate program execution flow.

The vulnerability requires user interaction—specifically, a victim must navigate to or be redirected to a malicious webpage containing the crafted HTML content. Once triggered, the stack corruption could potentially be leveraged for arbitrary code execution within the browser's sandbox, though sandbox escape would require additional vulnerabilities.

Root Cause

The root cause of CVE-2024-8905 lies in an inappropriate implementation within the V8 JavaScript engine. The flaw appears to be related to improper memory handling that results in out-of-bounds write operations (CWE-787) and potential heap-based buffer overflow conditions (CWE-122). When processing certain JavaScript operations or HTML content, the engine fails to properly validate or constrain memory operations, leading to stack corruption.

Attack Vector

The attack vector for this vulnerability is network-based, requiring user interaction. An attacker would need to:

1. Create a malicious HTML page containing specially crafted content designed to trigger the V8 implementation flaw
2. Lure a victim to visit the malicious webpage through phishing, malvertising, or other social engineering techniques
3. Upon page load, the crafted content triggers the stack corruption in the V8 engine
4. The corruption could potentially be exploited to achieve code execution within the browser process

The vulnerability affects the confidentiality, integrity, and availability of the system, as successful exploitation could allow attackers to read sensitive data, modify system state, or cause denial of service conditions.

Detection Methods for CVE-2024-8905

Indicators of Compromise

• Unusual Chrome renderer process crashes or unexpected browser behavior when visiting unknown websites
• Memory access violations or stack-related errors in Chrome crash logs
• Browser process anomalies detected by endpoint protection systems
• Suspicious JavaScript execution patterns in web traffic analysis

Detection Strategies

• Monitor for Chrome versions below 129.0.6668.58 across the enterprise using asset management tools
• Deploy browser-based threat detection to identify exploitation attempts targeting V8 engine vulnerabilities
• Implement network monitoring for suspicious HTML/JavaScript payloads that may indicate exploitation attempts
• Enable Chrome's built-in crash reporting to identify potential exploitation attempts

Monitoring Recommendations

• Configure endpoint detection and response (EDR) solutions to alert on Chrome renderer process anomalies
• Monitor for unexpected child processes spawned by Chrome that may indicate sandbox escape attempts
• Track browser version compliance across the organization to identify unpatched systems
• Review web proxy logs for access to known malicious domains or suspicious redirect chains

How to Mitigate CVE-2024-8905

Immediate Actions Required

• Update Google Chrome to version 129.0.6668.58 or later immediately across all systems
• Enable automatic Chrome updates to ensure timely patching of future vulnerabilities
• Consider deploying browser isolation solutions for high-risk users
• Implement web filtering to block access to known malicious sites while patch deployment is in progress

Patch Information

Google has addressed this vulnerability in Chrome version 129.0.6668.58. Organizations should update to this version or later immediately. The fix was released as part of the stable channel update on September 17, 2024. Additional details can be found in the Chromium Blog Update and the Chromium Issue Tracker Entry.

For enterprise environments, administrators can use Chrome Enterprise policies to manage browser updates and ensure consistent deployment across the organization.

Workarounds

• Restrict access to untrusted websites using web filtering or proxy solutions until patching is complete
• Consider disabling JavaScript on untrusted sites through browser extensions or policies (though this may break site functionality)
• Enable Site Isolation in Chrome to provide additional protection against cross-site attacks
• Deploy network-level protections to detect and block malicious HTML/JavaScript payloads

# Chrome Enterprise policy to force updates (Windows Registry)
# HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google\Update
# AutoUpdateCheckPeriodMinutes = 60 (check every hour)
# UpdateDefault = 1 (always update)

# Verify Chrome version via command line
# Windows
reg query "HKEY_CURRENT_USER\Software\Google\Chrome\BLBeacon" /v version

# Linux
google-chrome --version

# macOS
/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --version