CVE-2021-21230 : What You Need to Know

A detailed overview of CVE-2021-21230, a type confusion vulnerability found in V8 in Google Chrome versions prior to 90.0.4430.93, which could allow a remote attacker to exploit heap corruption via a crafted HTML page.

Understanding CVE-2021-21230

This section delves into the specifics of the CVE-2021-21230 vulnerability.

What is CVE-2021-21230?

CVE-2021-21230 is a type confusion vulnerability discovered in V8 in Google Chrome prior to version 90.0.4430.93. This flaw could be exploited by a remote attacker through a specially crafted HTML page to potentially cause heap corruption.

The Impact of CVE-2021-21230

The impact of this vulnerability is significant as it allows a remote attacker to exploit heap corruption, potentially leading to further exploitation and compromising the security and integrity of the affected system.

Technical Details of CVE-2021-21230

This section provides technical insights into CVE-2021-21230.

Vulnerability Description

The vulnerability involves a type confusion issue in V8 in Google Chrome versions prior to 90.0.4430.93, which could be triggered through a crafted HTML page.

Affected Systems and Versions

Google Chrome versions less than 90.0.4430.93 are affected by this vulnerability. Users with these versions are at risk of exploitation by remote attackers.

Exploitation Mechanism

Remote attackers can exploit this vulnerability by enticing users to visit a malicious website hosting a specially crafted HTML page, leading to potential heap corruption.

Mitigation and Prevention

Here are the measures to mitigate and prevent exploitation of CVE-2021-21230.

Immediate Steps to Take

Users are advised to update their Google Chrome browser to version 90.0.4430.93 or higher to prevent exploitation of this vulnerability. Additionally, exercise caution when visiting unfamiliar websites.

Long-Term Security Practices

Implementing secure browsing habits, regularly updating software, and employing security tools like antivirus programs can enhance overall security posture.

Patching and Updates

Regularly check for updates from Google Chrome and apply patches promptly to protect against known vulnerabilities and ensure a secure browsing experience.