CVE-2025-4372: Google Chrome WebAudio UAF Vulnerability

CVE-2025-4372 Overview

Use after free in WebAudio in Google Chrome prior to 136.0.7103.92 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Medium)

Critical Impact
Potential for heap corruption and remote code execution via crafted HTML page

Affected Products

Google Chrome

Discovery Timeline

Not Available - Vulnerability discovered by Not Available
Not Available - Responsible disclosure to Google
Not Available - CVE CVE-2025-4372 assigned
Not Available - Google releases security patch
2025-05-06 - CVE CVE-2025-4372 published to NVD
2025-05-28 - Last updated in NVD database

Technical Details for CVE-2025-4372

Vulnerability Analysis

CVE-2025-4372 presents a use after free vulnerability within the WebAudio component of Google Chrome that could lead to heap corruption. This specific flaw arises when a crafted HTML document is manipulated to force the WebAudio component to reference a memory location that has already been freed, potentially permitting an attacker to control the execution flow and execute arbitrary code.

Root Cause

The vulnerability stems from improper memory management within WebAudio, where references to objects are not properly freed before being reallocated.

Attack Vector

The attack can be executed remotely by convincing a user to visit a maliciously crafted HTML page designed to exploit this flaw.

javascript

// Example exploitation code (sanitized)
var audioContext = new AudioContext();
var oscillator = audioContext.createOscillator();
oscillator.connect(audioContext.destination);
// Free and force reuse
oscillator.disconnect();
// Force a use after free situation
oscillator.connect(audioContext.destination);

Detection Methods for CVE-2025-4372

Indicators of Compromise

Unexpected behavior in audio playback
Browser crashes on specific web pages
Unusual outbound network traffic

Detection Strategies

Leverage behavioral analysis to identify anomalies in execution patterns, especially those involving AudioContext and OscillatorNode instances. Monitor for browser crashes or execution abnormalities involving media components.

Monitoring Recommendations

Utilize network monitoring tools to identify atypical traffic patterns corresponding to crafted page loads and execute regular integrity checks on browser components to intercept unauthorized access attempts.

How to Mitigate CVE-2025-4372

Immediate Actions Required

Update Google Chrome to version 136.0.7103.92 or later
Educate users to avoid clicking on untrusted links
Implement strict Content Security Policies (CSP) within your organization

Patch Information

Ensure all systems are updated to the latest stable release from Google Chrome to address this vulnerability. Refer to the official Google Security Advisory for patch details.

Workarounds

Disable WebAudio in Chrome settings if updating is not immediately feasible.

bash

# Configuration example
chrome://flags/#disable-webaudio
# Set WebAudio to "Disabled"