CVE-2021-30545 : What You Need to Know

Use after free in Extensions in Google Chrome prior to 91.0.4472.101 allowed a remote attacker who had compromised the renderer process to potentially exploit heap corruption via a crafted HTML page.

Understanding CVE-2021-30545

This CVE refers to a use after free vulnerability in Google Chrome that could be exploited by a remote attacker.

What is CVE-2021-30545?

CVE-2021-30545 is a vulnerability in Google Chrome that allows a remote attacker, who has taken control of the renderer process, to potentially exploit heap corruption through a specially crafted HTML page.

The Impact of CVE-2021-30545

The impact of this vulnerability could lead to remote code execution, compromising the security and integrity of the affected system.

Technical Details of CVE-2021-30545

This section outlines the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability arises from a use after free issue in the Extensions component of Google Chrome versions prior to 91.0.4472.101, enabling a remote attacker to trigger heap corruption.

Affected Systems and Versions

Google Chrome versions less than 91.0.4472.101 are impacted by this vulnerability, making them susceptible to exploitation.

Exploitation Mechanism

An attacker who has already compromised the renderer process can exploit this vulnerability through a specifically crafted HTML page.

Mitigation and Prevention

In order to mitigate the risks associated with CVE-2021-30545, users and organizations should take immediate steps and implement long-term security practices.

Immediate Steps to Take

Update Google Chrome to version 91.0.4472.101 or later to patch the vulnerability.
Avoid visiting untrusted websites or clicking on suspicious links.

Long-Term Security Practices

Regularly update software and applications to the latest versions.
Implement network security measures to detect and prevent unauthorized access.

Patching and Updates

Stay informed about security advisories and updates from Google Chrome to address known vulnerabilities and enhance system security.