CVE-2021-4058 : Security Advisory and Response

Heap buffer overflow in ANGLE in Google Chrome prior to 96.0.4664.93 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Understanding CVE-2021-4058

This CVE describes a heap buffer overflow vulnerability in Google Chrome that could be exploited by a remote attacker to cause heap corruption.

What is CVE-2021-4058?

The CVE-2021-4058 vulnerability is a heap buffer overflow issue in ANGLE in Google Chrome versions prior to 96.0.4664.93. It could allow an attacker to trigger heap corruption through a specially crafted HTML page.

The Impact of CVE-2021-4058

The impact of this vulnerability is significant as it could lead to remote code execution, denial of service, or other malicious activities by an attacker exploiting the heap buffer overflow.

Technical Details of CVE-2021-4058

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability in ANGLE in Google Chrome arises from a heap buffer overflow, which could be abused by a remote attacker by using a malicious HTML page.

Affected Systems and Versions

Google Chrome versions prior to 96.0.4664.93 are affected by this vulnerability.

Exploitation Mechanism

An attacker can exploit this vulnerability by enticing a user to visit a specially crafted HTML page, triggering the heap buffer overflow and potentially allowing the attacker to execute malicious code.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-4058, certain steps can be taken to enhance security measures.

Immediate Steps to Take

Update Google Chrome to version 96.0.4664.93 or newer to patch the vulnerability and prevent potential exploitation. Additionally, exercise caution while visiting unknown or untrusted websites.

Long-Term Security Practices

Implementing secure coding practices, utilizing web security tools, and staying informed about security updates can help enhance long-term security.

Patching and Updates

Regularly check for and apply security updates for Google Chrome to ensure that known vulnerabilities are addressed promptly.