CVE-2024-5499: Google Chrome RCE Vulnerability

CVE-2024-5499 Overview

CVE-2024-5499 is an out-of-bounds write vulnerability in the Streams API component of Google Chrome prior to version 125.0.6422.141. This memory corruption flaw allows a remote attacker to execute arbitrary code inside the browser sandbox by convincing a user to visit a specially crafted HTML page. The vulnerability has been classified as high severity by the Chromium security team due to its potential for exploitation through routine web browsing activities.

Critical Impact

Remote attackers can execute arbitrary code within the Chrome sandbox by exploiting this out-of-bounds write vulnerability in the Streams API through malicious web content.

Affected Products

• Google Chrome versions prior to 125.0.6422.141
• Fedora 39 (with affected Chrome packages)
• Fedora 40 (with affected Chrome packages)

Discovery Timeline

• May 30, 2024 - CVE-2024-5499 published to NVD
• December 26, 2024 - Last updated in NVD database

Technical Details for CVE-2024-5499

Vulnerability Analysis

This vulnerability (CWE-787: Out-of-bounds Write) exists within Chrome's Streams API implementation, which is responsible for handling streaming data in web applications. The out-of-bounds write condition occurs when the Streams API processes maliciously crafted data that causes memory writes beyond allocated buffer boundaries. This type of memory corruption can lead to arbitrary code execution, as attackers can potentially overwrite critical memory regions including function pointers, return addresses, or other control flow data.

The exploitation requires user interaction—specifically, visiting a malicious webpage containing crafted HTML content. Once triggered, the vulnerability allows code execution within Chrome's sandbox environment. While the sandbox provides an additional layer of protection, successful exploitation could still lead to significant security impact, potentially allowing attackers to steal sensitive browser data, perform actions on behalf of the user, or serve as a stepping stone for sandbox escape attempts.

Root Cause

The root cause of CVE-2024-5499 lies in improper bounds checking within the Streams API implementation in Chromium's rendering engine. When processing certain stream operations, the code fails to properly validate buffer sizes or array indices before performing write operations. This oversight allows attackers to craft HTML content that triggers memory writes outside the bounds of allocated buffers, corrupting adjacent memory regions and potentially gaining control of program execution flow.

Attack Vector

The attack vector for this vulnerability is network-based and requires user interaction. An attacker must host or inject malicious HTML content on a webpage and entice the victim to visit it. The attack chain typically involves:

1. Attacker creates a malicious HTML page containing JavaScript code that manipulates the Streams API in a way that triggers the out-of-bounds write condition
2. Victim navigates to the attacker-controlled or compromised website
3. The malicious page loads and executes, triggering the vulnerability in Chrome's Streams API
4. Memory corruption occurs, allowing the attacker to execute arbitrary code within the browser's sandbox

The vulnerability can be exploited without any special privileges or authentication. For detailed technical information, refer to the Chromium Issue Tracker Entry.

Detection Methods for CVE-2024-5499

Indicators of Compromise

• Unexpected Chrome browser crashes, particularly when visiting unfamiliar websites
• Abnormal memory consumption patterns in Chrome renderer processes
• Detection of suspicious JavaScript code attempting to manipulate Streams API objects in unusual ways
• Browser telemetry showing exploitation attempts against Streams API functions

Detection Strategies

• Deploy endpoint detection solutions capable of identifying memory corruption exploitation patterns in browser processes
• Monitor for anomalous behavior in Chrome renderer processes, including unexpected system calls or file access
• Implement web content filtering to block access to known malicious domains distributing exploitation code
• Enable Chrome's built-in security features and crash reporting to identify potential exploitation attempts

Monitoring Recommendations

• Configure SentinelOne agents to monitor Chrome process behavior for signs of exploitation
• Enable enhanced browser logging to capture detailed information about Streams API usage
• Monitor network traffic for connections to known malicious infrastructure
• Track Chrome version deployments across the organization to ensure all instances are patched

How to Mitigate CVE-2024-5499

Immediate Actions Required

• Update Google Chrome to version 125.0.6422.141 or later immediately across all systems
• For Fedora users, apply the latest security updates via dnf update chromium or equivalent package management commands
• Verify Chrome auto-update functionality is enabled and functioning properly
• Consider temporarily restricting access to untrusted websites until patches are applied

Patch Information

Google has addressed this vulnerability in Chrome version 125.0.6422.141 released on May 30, 2024. The fix includes proper bounds checking for write operations within the Streams API implementation. Administrators should verify that Chrome installations have been updated to this version or later.

For detailed patch information, see the Google Chrome Stable Update announcement. Fedora users can refer to the Fedora Package Announcement for distribution-specific updates.

Workarounds

• Limit browsing to trusted websites until the patch can be applied
• Consider using alternative browsers temporarily while awaiting patch deployment
• Implement network-level content filtering to block potentially malicious web content
• Enable Chrome's Site Isolation feature to provide additional process-level separation

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

# Update Chrome on Fedora
sudo dnf update chromium --refresh

# Check for pending updates on Debian/Ubuntu
apt list --upgradable | grep chromium