CVE-2021-30511 Explained : Impact and Mitigation

Out of bounds read in Tab Groups in Google Chrome prior to 90.0.4430.212 allowed an attacker to perform an out of bounds memory read via a crafted HTML page.

Understanding CVE-2021-30511

This CVE pertains to an out of bounds read vulnerability in Google Chrome that could be exploited by convincing a user to install a malicious extension.

What is CVE-2021-30511?

The CVE-2021-30511 vulnerability involves an out of bounds read issue in Tab Groups in Google Chrome versions before 90.0.4430.212. This flaw could be triggered by an attacker through a specially crafted HTML page.

The Impact of CVE-2021-30511

Exploitation of this vulnerability could allow an attacker to perform an out of bounds memory read, potentially leading to information disclosure or further exploitation of the system.

Technical Details of CVE-2021-30511

This section outlines the technical aspects of the CVE.

Vulnerability Description

The vulnerability allows an attacker to read memory out of the designated bounds, leading to potential security risks.

Affected Systems and Versions

Google Chrome versions prior to 90.0.4430.212 are affected by this vulnerability in the Tab Groups feature.

Exploitation Mechanism

An attacker can exploit this vulnerability by persuading a user to install a malicious extension, subsequently triggering the out of bounds memory read.

Mitigation and Prevention

Learn how to address and prevent the CVE-2021-30511 vulnerability with the following steps.

Immediate Steps to Take

Users should update their Google Chrome browser to version 90.0.4430.212 or later to mitigate the risk of exploitation.

Long-Term Security Practices

Practicing caution while installing browser extensions and maintaining updated software are crucial for long-term security.

Patching and Updates

Regularly update Google Chrome to the latest version available to ensure that known vulnerabilities are patched and security is enhanced.