CVE-2021-21226 Explained : Impact and Mitigation

Google Chrome before version 90.0.4430.85 is affected by a Use after free vulnerability that allows a remote attacker to potentially escape the sandbox. Find out more about CVE-2021-21226 below.

Understanding CVE-2021-21226

This section provides insights into the impact, technical details, and mitigation strategies related to CVE-2021-21226.

What is CVE-2021-21226?

CVE-2021-21226 is a vulnerability in Google Chrome that involves a Use after free issue in navigation, enabling a compromised renderer process to execute a sandbox escape via a malicious HTML page.

The Impact of CVE-2021-21226

The vulnerability in Chrome prior to version 90.0.4430.85 allows a remote attacker to exploit the compromised renderer process and potentially perform a sandbox escape through a crafted HTML page.

Technical Details of CVE-2021-21226

Get to know more about the vulnerability, affected systems, and exploitation mechanism associated with CVE-2021-21226.

Vulnerability Description

The Use after free flaw in navigation of Google Chrome permits an attacker to trigger a sandbox escape by manipulating a specially crafted HTML page.

Affected Systems and Versions

Google Chrome versions prior to 90.0.4430.85 are impacted by this vulnerability, posing a risk of remote exploitation by threat actors.

Exploitation Mechanism

An attacker, through a compromised renderer process, can leverage the Use after free issue in Chrome to execute a sandbox escape, thereby bypassing security restrictions.

Mitigation and Prevention

Learn about the immediate steps to secure your systems post-detection and the long-term practices to enhance your overall security posture.

Immediate Steps to Take

Upon detection of this vulnerability, it is crucial to update Google Chrome to version 90.0.4430.85 or later to mitigate the risk of exploitation.

Long-Term Security Practices

To bolster your security defenses, consider implementing secure coding practices, conducting regular security assessments, and staying informed about security updates.

Patching and Updates

Stay proactive in applying security patches and updates released by Google Chrome to address known vulnerabilities like CVE-2021-21226.