CVE-2021-4063 : Security Advisory and Response

This article provides detailed information about CVE-2021-4063, a vulnerability that affects Google Chrome versions prior to 96.0.4664.93.

Understanding CVE-2021-4063

CVE-2021-4063 is a 'Use after free' vulnerability in the developer tools of Google Chrome, which could allow a remote attacker to exploit heap corruption through a specially crafted HTML page.

What is CVE-2021-4063?

The CVE-2021-4063 vulnerability involves a use-after-free flaw in Google Chrome's developer tools. This flaw can be exploited by an attacker to corrupt the heap memory, potentially leading to arbitrary code execution.

The Impact of CVE-2021-4063

The impact of CVE-2021-4063 is significant as it could allow a remote attacker to compromise the security of affected systems running vulnerable versions of Google Chrome. Successful exploitation of this vulnerability could result in unauthorized access, data loss, or further system compromise.

Technical Details of CVE-2021-4063

The technical details of CVE-2021-4063 highlight the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability arises from a use-after-free issue in the developer tools of Google Chrome, allowing an attacker to manipulate memory after it has been freed, leading to potential heap corruption.

Affected Systems and Versions

Google Chrome versions earlier than 96.0.4664.93 are affected by CVE-2021-4063. Users running these versions are advised to update to the latest secure versions.

Exploitation Mechanism

To exploit CVE-2021-4063, an attacker would need to craft a malicious HTML page and persuade a user to visit it. By triggering the use-after-free flaw in the developer tools, the attacker could execute arbitrary code on the victim's system.

Mitigation and Prevention

Addressing CVE-2021-4063 requires immediate actions and long-term security practices to safeguard systems against similar vulnerabilities.

Immediate Steps to Take

Users are strongly advised to update their Google Chrome browser to a version beyond 96.0.4664.93 to mitigate the risk of exploitation.

Long-Term Security Practices

It is essential to implement robust security measures, such as keeping software up to date, using security software, and practicing safe browsing habits to prevent future vulnerabilities.

Patching and Updates

Regularly check for security updates from Google Chrome and apply patches promptly to address known vulnerabilities and enhance the security posture of your system.