CVE-2024-7970 Overview
CVE-2024-7970 is a critical out-of-bounds write vulnerability in the V8 JavaScript engine used by Google Chrome. This memory corruption flaw allows remote attackers to potentially exploit heap corruption through a specially crafted HTML page. V8, Chrome's high-performance JavaScript and WebAssembly engine, processes untrusted JavaScript code from web pages, making this vulnerability particularly dangerous as it can be triggered simply by visiting a malicious website.
Critical Impact
Remote attackers can exploit heap corruption to potentially achieve arbitrary code execution on victim systems by luring users to visit a malicious web page.
Affected Products
- Google Chrome versions prior to 128.0.6613.119
- Chromium-based browsers using vulnerable V8 engine versions
- All platforms running affected Chrome versions (Windows, macOS, Linux)
Discovery Timeline
- September 3, 2024 - CVE-2024-7970 published to NVD
- January 2, 2025 - Last updated in NVD database
Technical Details for CVE-2024-7970
Vulnerability Analysis
This vulnerability is classified as CWE-787 (Out-of-bounds Write), a memory corruption flaw that occurs when data is written outside the boundaries of allocated memory buffers. In the context of V8, the JavaScript engine performs complex Just-In-Time (JIT) compilation and optimization operations that, when improperly handled, can lead to heap corruption.
The flaw exists in how V8 processes certain JavaScript operations, where improper bounds checking allows an attacker to write data beyond the intended memory allocation. This can corrupt adjacent heap metadata or other objects, potentially allowing attackers to hijack control flow or achieve arbitrary code execution.
Root Cause
The root cause stems from insufficient bounds validation in the V8 engine's memory handling routines. When processing crafted JavaScript code, the engine fails to properly verify that write operations remain within allocated buffer boundaries. This allows attackers to manipulate heap memory in ways that can lead to code execution.
Attack Vector
The attack is network-based and requires user interaction. An attacker crafts a malicious HTML page containing JavaScript code designed to trigger the out-of-bounds write condition. The attack sequence follows:
- Attacker hosts or injects malicious JavaScript into a web page
- Victim navigates to the compromised page in a vulnerable Chrome browser
- V8 engine processes the malicious JavaScript during page rendering
- Crafted operations trigger the out-of-bounds write, corrupting heap memory
- Attacker leverages heap corruption to achieve code execution or system compromise
The vulnerability exploitation does not require any privileges or authentication, making it accessible to any remote attacker capable of serving malicious content.
Detection Methods for CVE-2024-7970
Indicators of Compromise
- Unusual Chrome renderer process crashes or restarts
- Suspicious JavaScript execution patterns in browser logs
- Heap corruption signatures in crash dumps from Chrome processes
- Network connections to known malicious domains serving exploit pages
Detection Strategies
- Monitor for Chrome versions below 128.0.6613.119 across enterprise endpoints
- Implement browser extension policies to block untrusted JavaScript execution
- Deploy endpoint detection solutions capable of identifying heap spray and memory corruption techniques
- Analyze crash reports for V8-related heap corruption signatures
Monitoring Recommendations
- Enable Chrome enterprise logging and crash reporting
- Monitor network traffic for suspicious HTML/JavaScript payloads
- Implement web filtering to block access to known exploit delivery domains
- Review endpoint telemetry for anomalous Chrome process behavior
How to Mitigate CVE-2024-7970
Immediate Actions Required
- Update Google Chrome to version 128.0.6613.119 or later immediately
- Enable automatic updates for Chrome across all managed endpoints
- Review and update Chromium-based applications (Edge, Brave, Opera) to patched versions
- Implement network-level protections to filter malicious web content
Patch Information
Google has released Chrome version 128.0.6613.119 which addresses this vulnerability. The update includes fixes for the V8 bounds checking issue that enabled the out-of-bounds write condition. Organizations should verify patch deployment across all endpoints and ensure automatic update mechanisms are functioning correctly. For detailed information, see the Google Chrome Desktop Update announcement and the Chromium Issue Tracker Entry.
Workarounds
- Restrict browsing to trusted websites until patches can be applied
- Consider using alternate browsers temporarily for untrusted content
- Implement strict Content Security Policy headers on internal web applications
- Enable Site Isolation features in Chrome for additional process-level protection
- Deploy web proxy solutions to filter potentially malicious JavaScript content
# Verify Chrome version on Linux/macOS
google-chrome --version
# Expected output: Google Chrome 128.0.6613.119 or higher
# Force Chrome update check
# Navigate to: chrome://settings/help
# Or use enterprise deployment tools like:
# Windows: WMIC product where "name like 'Google Chrome%%'" get version
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
