CVE-2024-12694: Google Chrome Use After Free Vulnerability

CVE-2024-12694 Overview

CVE-2024-12694 is a use-after-free vulnerability in the Compositing component of Google Chrome versions prior to 131.0.6778.204. The flaw allows a remote attacker to potentially trigger heap corruption by enticing a user to visit a crafted HTML page. Google rated the Chromium security severity as High. The weakness is classified under CWE-416: Use After Free. Because Chrome's rendering pipeline operates within sandboxed processes, successful exploitation typically requires chaining with a sandbox escape to achieve full system compromise. The issue was addressed in the Stable Channel Update for Desktop published by Google in December 2024.

Critical Impact

A remote attacker can corrupt heap memory in the browser process through a malicious web page, potentially leading to arbitrary code execution within the renderer context.

Affected Products

• Google Chrome for Desktop versions prior to 131.0.6778.204
• Chromium-based browsers that incorporate the unpatched Compositing code
• Chrome on Windows, macOS, and Linux platforms

Discovery Timeline

• 2024-12-18 - CVE-2024-12694 published to NVD
• 2024-12-18 - Google releases Stable Channel update with the fix
• 2025-02-11 - Last updated in NVD database

Technical Details for CVE-2024-12694

Vulnerability Analysis

The vulnerability resides in Chrome's Compositing component, which is responsible for assembling rendered graphical layers before display. A use-after-free occurs when the code references heap memory that has already been freed, allowing an attacker to influence the contents at that address. By crafting an HTML page that manipulates compositing state transitions, an attacker can trigger the dangling pointer condition and corrupt the heap. Heap corruption in the renderer can be leveraged to gain code execution within the renderer process. The bug requires user interaction, since the target must load the malicious page. Public exploitation has not been reported, and the CVE is not listed in the CISA Known Exploited Vulnerabilities catalog.

Root Cause

The root cause is improper object lifetime management in the Compositing subsystem. A reference to a composited object persists after the object has been deallocated, producing a dangling pointer that subsequent code dereferences. Technical details are tracked in Chromium Issue 368222741, which remains restricted to allow user patch adoption.

Attack Vector

Exploitation requires a victim to load attacker-controlled HTML in a vulnerable Chrome version. The attacker hosts a crafted page that orchestrates DOM and compositor operations to free an object while a reference remains live. The attacker then reclaims the freed memory with attacker-controlled data through standard heap-grooming techniques. Reuse of the dangling pointer reads or writes attacker-influenced bytes, yielding heap corruption. The vulnerability does not require authentication, but it does require user interaction such as clicking a link or loading an iframe.

No verified proof-of-concept code is publicly available. See the Chromium Issue Tracker entry for further technical references as they become public.

Detection Methods for CVE-2024-12694

Indicators of Compromise

• Chrome renderer process crashes with heap corruption signatures shortly after visiting an untrusted URL
• Unexpected child processes spawning from chrome.exe following a browsing session
• Outbound connections to unfamiliar domains immediately preceding renderer instability
• Browser version strings reporting Chrome builds older than 131.0.6778.204 on managed endpoints

Detection Strategies

• Inventory installed Chrome versions across the fleet and flag any host running below 131.0.6778.204
• Monitor crash telemetry for repeated renderer faults that may indicate exploitation attempts
• Inspect web proxy logs for HTML payloads that aggressively manipulate canvas, CSS transforms, or compositor-heavy APIs from low-reputation origins

Monitoring Recommendations

• Centralize Chrome crash reports and correlate them with browsing history to identify potential exploit pages
• Alert on process injection or unexpected memory allocation patterns originating from Chrome processes
• Track endpoint compliance with browser patch baselines through configuration management tooling

How to Mitigate CVE-2024-12694

Immediate Actions Required

• Update Google Chrome to version 131.0.6778.204 or later on all desktop platforms
• Restart Chrome after the update so that the patched binaries load into memory
• Audit Chromium-derived browsers such as Edge, Brave, and Opera for downstream patch availability
• Restrict execution of unverified browser extensions that could amplify renderer-level compromise

Patch Information

Google addressed the issue in Chrome Stable 131.0.6778.204 for Windows, macOS, and Linux. Details are documented in the Stable Channel Update for Desktop. Enterprise administrators should deploy the update through Chrome Browser Cloud Management, Group Policy, or the platform's standard software distribution mechanism.

Workarounds

• No official workaround exists; applying the vendor patch is the only supported remediation
• Reduce exposure by limiting browsing to trusted sites until the update is fully rolled out
• Enforce the use of Site Isolation and Strict Site Isolation policies to constrain renderer compromise

# Verify installed Chrome version on Linux
google-chrome --version

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

# Verify on Windows (PowerShell)
(Get-Item "$Env:ProgramFiles\Google\Chrome\Application\chrome.exe").VersionInfo.ProductVersion