CVE-2024-8904 Overview
CVE-2024-8904 is a type confusion vulnerability in the V8 JavaScript engine used by Google Chrome versions prior to 129.0.6668.58. A remote attacker can exploit heap corruption by serving a crafted HTML page to a target user. Successful exploitation can lead to arbitrary code execution within the renderer process. The flaw is classified under CWE-843 (Access of Resource Using Incompatible Type). Google's Chromium team rated the severity High, and the issue affects all Chrome desktop builds released before the September 17, 2024 stable channel update.
Critical Impact
Remote attackers can trigger heap corruption in V8 through a crafted HTML page, enabling potential arbitrary code execution in the browser renderer.
Affected Products
- Google Chrome (Desktop) versions prior to 129.0.6668.58
- Chromium-based browsers integrating vulnerable V8 builds
- All supported desktop platforms (Windows, macOS, Linux) shipping pre-129 Chrome
Discovery Timeline
- 2024-09-17 - CVE-2024-8904 published to NVD following Chrome stable channel update
- 2025-01-02 - Last updated in NVD database
Technical Details for CVE-2024-8904
Vulnerability Analysis
The vulnerability resides in V8, the JavaScript and WebAssembly engine that ships with Chrome. V8 uses type-specialized fast paths and inline caches to optimize property access and arithmetic operations. A type confusion bug arises when the engine treats a memory object as a type incompatible with its actual layout. The mismatch allows an attacker-controlled object to be interpreted with the wrong shape or class, producing reads and writes outside intended boundaries. The result is corruption of the V8 heap inside the renderer process.
Exploitation requires the victim to load a crafted HTML page. The page delivers JavaScript that manipulates object types to trigger the engine's incorrect specialization. Once heap layout is corrupted, an attacker can construct read and write primitives. These primitives are the typical stepping stones to renderer process code execution and subsequent sandbox-escape chains.
Root Cause
The root cause is improper type validation within V8's optimized code paths. When the compiler or runtime fails to confirm that an object matches the expected type before performing low-level operations, adjacent heap memory becomes reachable through legitimate field accessors. This class of defect is tracked as CWE-843.
Attack Vector
Attackers deliver the exploit through any channel capable of rendering HTML in Chrome. Methods include malicious websites, compromised legitimate sites, malvertising, and links embedded in phishing emails. User interaction is required: the target must visit the page. Refer to the Chromium Issue Tracker Entry for the upstream issue and the Google Chrome Update Announcement for the official fix advisory.
No public proof-of-concept code has been released for this vulnerability. Technical details are described in prose rather than synthetic exploit code.
Detection Methods for CVE-2024-8904
Indicators of Compromise
- Chrome renderer process crashes correlated with visits to unfamiliar or suspicious domains
- Unexpected child processes spawned from chrome.exe shortly after browsing activity
- Outbound network connections from the browser to attacker-controlled infrastructure following page loads
Detection Strategies
- Inventory installed Chrome versions across endpoints and flag any build earlier than 129.0.6668.58
- Monitor process telemetry for anomalous behavior originating from Chrome renderer or utility processes
- Inspect web proxy and DNS logs for requests to known malicious hosts serving JavaScript exploit payloads
Monitoring Recommendations
- Centralize browser version reporting through endpoint management tooling and alert on outdated installs
- Correlate renderer crash dumps with URL history to identify potential exploitation attempts
- Apply behavioral analytics to detect post-exploitation actions such as credential access or lateral movement following browser compromise
How to Mitigate CVE-2024-8904
Immediate Actions Required
- Update Google Chrome to version 129.0.6668.58 or later on all desktop endpoints
- Restart Chrome after the update to ensure the patched V8 engine is loaded
- Verify that Chromium-based browsers (Edge, Brave, Opera, Vivaldi) have absorbed the corresponding V8 fix
Patch Information
Google released the fix in the stable channel update for desktop on September 17, 2024. Administrators should deploy Chrome 129.0.6668.58 or later. Details are available in the Google Chrome Update Announcement.
Workarounds
- Enforce strict site allow-listing for high-risk user groups until patches are deployed
- Disable JavaScript on untrusted sites through enterprise policy where workflow permits
- Route browsing through web isolation or remote browser infrastructure for sensitive roles
# Verify Chrome version on Linux/macOS endpoints
google-chrome --version
# Windows PowerShell: query installed Chrome version
(Get-Item "C:\Program Files\Google\Chrome\Application\chrome.exe").VersionInfo.ProductVersion
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
