CVE-2021-21153 : Security Advisory and Response

A stack buffer overflow vulnerability was discovered in the GPU Process in Google Chrome on Linux versions prior to 88.0.4324.182. This flaw could allow a remote attacker to potentially perform out-of-bounds memory access through a specially crafted HTML page.

Understanding CVE-2021-21153

This section provides insights into the impact, technical details, and mitigation strategies related to CVE-2021-21153.

What is CVE-2021-21153?

CVE-2021-21153 is a stack buffer overflow vulnerability found in the GPU Process of Google Chrome on Linux platforms before version 88.0.4324.182. Exploitation of this vulnerability could enable a remote attacker to trigger out-of-bounds memory access by luring a user into visiting a malicious website containing a specially crafted HTML page.

The Impact of CVE-2021-21153

The impact of this vulnerability lies in the potential for a remote attacker to execute arbitrary code, read sensitive information, or cause a denial of service (DoS) condition on the affected system. Successful exploitation could lead to a complete compromise of the targeted system.

Technical Details of CVE-2021-21153

Let's delve deeper into the specifics of the vulnerability.

Vulnerability Description

The vulnerability arises from a stack buffer overflow in the GPU Process of Google Chrome, resulting in the possibility of out-of-bounds memory access when processing malicious HTML content.

Affected Systems and Versions

Google Chrome running on Linux systems with versions prior to 88.0.4324.182 is vulnerable to this exploit.

Exploitation Mechanism

An attacker can exploit this vulnerability by enticing a user to access a specially crafted HTML page through social engineering tactics or phishing campaigns.

Mitigation and Prevention

Discover the steps necessary to mitigate the risks associated with CVE-2021-21153.

Immediate Steps to Take

Users are advised to update Google Chrome to version 88.0.4324.182 or later to prevent exploitation of this vulnerability. Additionally, exercise caution when visiting untrusted websites or following unknown links.

Long-Term Security Practices

Developing a proactive approach to security by regularly updating software, employing strong email security measures, and educating users on safe browsing practices can enhance overall cybersecurity resilience.

Patching and Updates

Stay informed about security updates released by Google Chrome and apply patches promptly to ensure that known vulnerabilities are mitigated effectively.