CVE-2021-37979 : Exploit Details and Defense Strategies

The CVE-2021-37979 vulnerability in Google Chrome prior to version 94.0.4606.81 is a heap buffer overflow issue in WebRTC. This vulnerability could be exploited by a remote attacker through a malicious website.

Understanding CVE-2021-37979

This section covers the key details of the CVE-2021-37979 vulnerability.

What is CVE-2021-37979?

The CVE-2021-37979 vulnerability is a heap buffer overflow in WebRTC in Google Chrome versions earlier than 94.0.4606.81. It allows a remote attacker to potentially trigger heap corruption by luring a user to visit a specially crafted HTML page.

The Impact of CVE-2021-37979

The vulnerability could lead to remote code execution, allowing an attacker to take control of the affected system, steal sensitive information, or perform further malicious activities.

Technical Details of CVE-2021-37979

This section delves into the technical aspects of the CVE-2021-37979 vulnerability.

Vulnerability Description

The heap buffer overflow in WebRTC enables attackers to corrupt memory, leading to potential exploitation via crafted HTML pages.

Affected Systems and Versions

Google Chrome versions prior to 94.0.4606.81 are impacted by this vulnerability. Users of these versions are at risk of exploitation.

Exploitation Mechanism

An attacker can exploit this vulnerability by tricking a user into visiting a specially crafted website, triggering the heap buffer overflow through WebRTC.

Mitigation and Prevention

To address and prevent the CVE-2021-37979 vulnerability, consider the following steps:

Immediate Steps to Take

Update Google Chrome to version 94.0.4606.81 or later to mitigate the vulnerability.
Avoid clicking on suspicious links or visiting untrusted websites to reduce the risk of exploitation.

Long-Term Security Practices

Regularly update your web browser and other software to patch known vulnerabilities and enhance security.
Implement network security measures such as firewalls and intrusion detection systems to prevent unauthorized access.

Patching and Updates

Stay informed about security advisories and updates from Google Chrome to promptly apply patches for any newly discovered vulnerabilities.