CVE-2024-7025: Google Chrome RCE Vulnerability

CVE-2024-7025 Overview

CVE-2024-7025 is a high-severity integer overflow vulnerability in the Layout component of Google Chrome prior to version 129.0.6668.89. This memory corruption flaw allows a remote attacker to potentially exploit heap corruption by crafting a malicious HTML page. When a user visits such a page, the integer overflow condition can be triggered, leading to unpredictable memory behavior that an attacker could leverage for code execution.

Critical Impact

Remote attackers can exploit this integer overflow to corrupt heap memory via specially crafted HTML pages, potentially leading to arbitrary code execution in the context of the browser process.

Affected Products

• Google Chrome versions prior to 129.0.6668.89
• Chromium-based browsers that incorporate the vulnerable Layout component
• All platforms running unpatched versions of Google Chrome

Discovery Timeline

• 2024-11-27 - CVE-2024-7025 published to NVD
• 2025-01-02 - Last updated in NVD database

Technical Details for CVE-2024-7025

Vulnerability Analysis

This vulnerability resides in the Layout component of the Chromium rendering engine. The Layout component is responsible for calculating and arranging the visual representation of web page elements. An integer overflow (CWE-190) occurs when arithmetic operations produce a value that exceeds the maximum size of the integer type used to store it, causing the value to wrap around to an unexpected result.

In this case, the integer overflow affects memory allocation or offset calculations within the Layout engine. When processing specially crafted HTML content, the overflow can result in incorrect buffer sizes being allocated or invalid memory offsets being computed. This leads to heap corruption (CWE-472), which can subsequently be exploited for arbitrary code execution.

The vulnerability requires user interaction—specifically, the victim must navigate to a malicious web page or be redirected to one. Once the crafted HTML is rendered, the integer overflow is triggered during the layout calculation phase.

Root Cause

The root cause is improper handling of integer arithmetic operations in the Layout component. When processing certain HTML element properties or dimensions, the code performs calculations that can exceed integer boundaries. The lack of proper overflow checks allows the computation to wrap around, producing incorrect values that are then used in subsequent memory operations, leading to heap corruption.

Attack Vector

The attack is network-based and requires user interaction. An attacker would:

1. Create a malicious HTML page containing elements designed to trigger the integer overflow in Chrome's Layout engine
2. Host this page on an attacker-controlled server or inject it into a compromised website
3. Entice victims to visit the malicious URL through phishing, social engineering, or malicious advertisements
4. When the victim's browser renders the page, the integer overflow is triggered
5. The resulting heap corruption can be leveraged for further exploitation, potentially leading to arbitrary code execution

The vulnerability affects the rendering process, which means exploitation could allow an attacker to execute code within the browser's sandbox. Further sandbox escape techniques might be required for full system compromise.

Detection Methods for CVE-2024-7025

Indicators of Compromise

• Unexpected browser crashes or hangs when visiting specific web pages
• Browser process memory exceptions or heap corruption errors in crash dumps
• Anomalous network requests to unfamiliar domains followed by browser instability
• Unusual child process spawning from Chrome browser processes

Detection Strategies

• Monitor for Google Chrome crash reports containing Layout component stack traces
• Implement web filtering to block access to known malicious domains distributing exploit code
• Deploy endpoint detection solutions capable of identifying heap spray or corruption patterns
• Analyze browser telemetry for abnormal rendering behavior or resource consumption

Monitoring Recommendations

• Enable Chrome crash reporting and analyze crash patterns across the organization
• Monitor network traffic for suspicious HTML content patterns associated with browser exploits
• Track browser version deployments to identify systems running vulnerable versions
• Implement SentinelOne Singularity XDR for real-time detection of exploitation attempts targeting browser vulnerabilities

How to Mitigate CVE-2024-7025

Immediate Actions Required

• Update Google Chrome to version 129.0.6668.89 or later immediately
• Enable automatic updates for Chrome across all managed endpoints
• Consider using enterprise browser policies to enforce minimum version requirements
• Educate users about the risks of visiting untrusted websites

Patch Information

Google has addressed this vulnerability in Chrome version 129.0.6668.89 and later releases. The fix was announced in the Google Chrome Desktop Update. Organizations should prioritize deploying this update to all systems running Google Chrome.

Additional technical details can be found in the Chromium Issue Tracker Entry.

Workarounds

• If immediate patching is not possible, consider using an alternative browser until Chrome can be updated
• Implement strict web filtering policies to limit access to untrusted or unknown websites
• Enable site isolation features in Chrome to provide additional sandboxing protection
• Deploy network-level protections to filter potentially malicious HTML content

# Verify Chrome version on Windows
"C:\Program Files\Google\Chrome\Application\chrome.exe" --version

# Verify Chrome version on Linux/macOS
google-chrome --version

# Expected output should show version 129.0.6668.89 or higher