CVE-2021-30529 : Exploit Details and Defense Strategies

A detailed overview of CVE-2021-30529, a vulnerability in Google Chrome versions prior to 91.0.4472.77 that allowed an attacker to potentially exploit heap corruption via a crafted HTML page.

Understanding CVE-2021-30529

This section provides insight into the nature and impact of the vulnerability.

What is CVE-2021-30529?

The CVE-2021-30529 vulnerability, also known as a 'Use after free' in Bookmarks in Google Chrome, prior to version 91.0.4472.77, allowed a user-installed malicious extension to potentially exploit heap corruption through a carefully crafted HTML page.

The Impact of CVE-2021-30529

The vulnerability posed a significant security risk as it could lead to heap corruption when exploited by an attacker who tricked users into installing a malicious extension.

Technical Details of CVE-2021-30529

Explore the technical aspects of the vulnerability in this section.

Vulnerability Description

The vulnerability stemmed from a use-after-free issue in Bookmarks in Google Chrome, making it possible for an attacker to corrupt the heap by leveraging a specially crafted HTML page.

Affected Systems and Versions

Google Chrome versions earlier than 91.0.4472.77 were affected by this vulnerability, leaving them open to exploitation by malicious actors.

Exploitation Mechanism

Attackers could exploit the CVE-2021-30529 vulnerability by convincing users to install a malicious extension that could trigger heap corruption through a carefully crafted HTML page.

Mitigation and Prevention

Discover the steps to mitigate the risk posed by CVE-2021-30529 in this section.

Immediate Steps to Take

Users are advised to update their Google Chrome browsers to version 91.0.4472.77 or higher to prevent exploitation of this vulnerability. Additionally, exercising caution when installing extensions can help reduce the risk of such attacks.

Long-Term Security Practices

Implementing robust security practices, such as regularly updating browsers and being wary of installing untrusted extensions, can enhance overall system security and mitigate similar vulnerabilities in the future.

Patching and Updates

Google has released patches to address the CVE-2021-30529 vulnerability. Users are encouraged to install these updates promptly to safeguard their systems against potential exploits.