CVE-2024-0517: Google Chrome V8 RCE Vulnerability

CVE-2024-0517 Overview

CVE-2024-0517 is a critical out-of-bounds write vulnerability in the V8 JavaScript engine used by Google Chrome. This memory corruption flaw exists in Chrome versions prior to 120.0.6099.224 and allows remote attackers to potentially exploit heap corruption through specially crafted HTML pages. The vulnerability is classified as CWE-787 (Out-of-bounds Write), a dangerous memory safety issue that can lead to arbitrary code execution.

Critical Impact

Remote attackers can exploit heap corruption through malicious web content, potentially achieving arbitrary code execution in the context of the browser process. Users simply need to visit a malicious webpage to trigger the vulnerability.

Affected Products

• Google Chrome versions prior to 120.0.6099.224
• Fedora 38 (via bundled Chromium)
• Fedora 39 (via bundled Chromium)

Discovery Timeline

• January 16, 2024 - CVE-2024-0517 published to NVD
• May 22, 2025 - Last updated in NVD database

Technical Details for CVE-2024-0517

Vulnerability Analysis

This vulnerability resides in V8, Google Chrome's high-performance JavaScript and WebAssembly engine. V8 is responsible for parsing and executing JavaScript code in Chrome and Chromium-based browsers. The out-of-bounds write condition occurs when V8 improperly handles certain JavaScript operations, allowing data to be written beyond the boundaries of allocated heap memory.

The flaw requires user interaction—specifically, a victim must navigate to a malicious webpage containing crafted HTML and JavaScript. Once triggered, the heap corruption can be leveraged to overwrite critical data structures in memory, potentially enabling an attacker to gain control of program execution flow.

The vulnerability has attracted significant attention from the security community, with an EPSS score indicating a 66.013% probability of exploitation in the wild, placing it in the 98.456th percentile among all scored vulnerabilities.

Root Cause

The root cause stems from improper bounds checking within V8's memory management routines. When processing specific JavaScript constructs, the engine fails to properly validate array or buffer indices before performing write operations. This allows attackers to craft JavaScript code that causes V8 to write data outside the bounds of allocated heap buffers, corrupting adjacent memory regions.

Out-of-bounds write vulnerabilities in JavaScript engines are particularly dangerous because they operate within the browser's renderer process, which handles untrusted web content. Successful exploitation can bypass browser sandboxing mechanisms and potentially lead to full system compromise.

Attack Vector

The attack is network-based and requires user interaction through social engineering or drive-by download scenarios. An attacker would need to:

1. Create a malicious webpage containing specially crafted HTML and JavaScript designed to trigger the V8 vulnerability
2. Lure victims to visit the malicious page through phishing, malvertising, or compromised legitimate websites
3. Upon page load, the crafted JavaScript executes and triggers the out-of-bounds write condition
4. The resulting heap corruption can be manipulated to achieve arbitrary code execution

The vulnerability is accessible from any network path where Chrome can reach malicious content, making it exploitable through standard web browsing. No authentication or special privileges are required from the attacker's perspective—only the ability to serve malicious content to victims.

Technical details regarding the specific exploitation mechanism can be found in the Chromium Bug Report #1515930 and the Vicarius CVE-2024-0517 Analysis.

Detection Methods for CVE-2024-0517

Indicators of Compromise

• Unexpected Chrome renderer process crashes or abnormal memory usage patterns
• Browser accessing unusual domains or loading obfuscated JavaScript from untrusted sources
• Chrome process spawning unexpected child processes or making unusual system calls
• Heap corruption signatures or access violation exceptions in Chrome crash dumps

Detection Strategies

• Deploy endpoint detection and response (EDR) solutions capable of monitoring browser process behavior and detecting exploitation attempts
• Monitor for Chrome crash reports that indicate heap corruption or V8 engine failures
• Implement network-level inspection for known malicious JavaScript patterns targeting V8 vulnerabilities
• Utilize browser isolation technologies to contain potential exploitation attempts in sandboxed environments

Monitoring Recommendations

• Enable Chrome's built-in crash reporting and monitor for patterns indicating attempted exploitation
• Configure SIEM rules to alert on unusual Chrome renderer process behavior or memory anomalies
• Track browser version deployment across the enterprise to identify unpatched systems
• Monitor threat intelligence feeds for active exploitation campaigns targeting CVE-2024-0517

How to Mitigate CVE-2024-0517

Immediate Actions Required

• Update Google Chrome to version 120.0.6099.224 or later immediately across all endpoints
• Enable automatic updates for Chrome to ensure timely deployment of security patches
• Audit enterprise environments for any systems running vulnerable Chrome versions
• Consider temporarily restricting access to untrusted websites on critical systems until patches are deployed

Patch Information

Google has released Chrome version 120.0.6099.224 which addresses this vulnerability. The patch was announced on January 16, 2024, through the Google Chrome Update Announcement. Fedora users should apply updates through their distribution's package management system as detailed in the Fedora Package Announcements for Fedora 38 and Fedora 39.

Workarounds

• Enable Site Isolation in Chrome to limit the impact of renderer process compromises
• Deploy browser isolation solutions that render web content in isolated containers
• Consider using enterprise browser policies to restrict JavaScript execution on untrusted sites
• Implement network segmentation to limit the blast radius of potential browser-based attacks

# Verify Chrome version is patched (should be 120.0.6099.224 or higher)
google-chrome --version

# For Fedora systems, update Chromium package
sudo dnf update chromium

# Enterprise deployment: Check Chrome version across endpoints
# Using Chrome Browser Cloud Management or similar MDM solution