CVE-2021-30633 : Security Advisory and Response

A detailed overview of CVE-2021-30633, a vulnerability in Google Chrome that allowed a remote attacker to potentially perform a sandbox escape. Learn about the impact, technical details, and mitigation steps.

Understanding CVE-2021-30633

This section provides insights into the vulnerability identified as CVE-2021-30633 in Google Chrome.

What is CVE-2021-30633?

The CVE-2021-30633 vulnerability in Google Chrome, specifically in the Indexed DB API, allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape through a crafted HTML page.

The Impact of CVE-2021-30633

The impact of this vulnerability was significant as it could enable a remote attacker to escape the browser's sandbox environment, leading to potential security breaches and unauthorized access to sensitive information.

Technical Details of CVE-2021-30633

Explore the technical aspects of CVE-2021-30633 to understand how this vulnerability affected Google Chrome.

Vulnerability Description

The vulnerability involved a use-after-free error in the Indexed DB API of Google Chrome versions prior to 93.0.4577.82, which could be exploited by a remote attacker to escape the browser's sandbox.

Affected Systems and Versions

Google Chrome versions less than 93.0.4577.82 were affected by this use-after-free vulnerability, emphasizing the importance of updating to the latest version to prevent exploitation.

Exploitation Mechanism

Through a crafted HTML page, a remote attacker could compromise the renderer process in Google Chrome, triggering the use-after-free vulnerability in the Indexed DB API to escape the sandbox environment.

Mitigation and Prevention

Discover the necessary steps to mitigate and prevent the exploitation of CVE-2021-30633 in Google Chrome.

Immediate Steps to Take

Users and administrators should update Google Chrome to version 93.0.4577.82 or higher to patch the use-after-free vulnerability and prevent potential sandbox escapes.

Long-Term Security Practices

Implementing secure browsing habits and regularly updating the browser can help enhance overall cybersecurity posture and mitigate future vulnerabilities.

Patching and Updates

Regularly monitoring for security updates and promptly applying patches released by Google Chrome can safeguard against known vulnerabilities like CVE-2021-30633.