CVE-2021-30513 : Security Advisory and Response

A detailed overview of CVE-2021-30513 focusing on type confusion in V8 in Google Chrome prior to version 90.0.4430.212, allowing remote attackers to exploit heap corruption.

Understanding CVE-2021-30513

This section provides insights into the vulnerability, impact, technical details, and mitigation approaches.

What is CVE-2021-30513?

CVE-2021-30513 refers to a type confusion vulnerability in V8 in Google Chrome versions before 90.0.4430.212. It enables remote attackers to potentially exploit heap corruption through a specifically crafted HTML page.

The Impact of CVE-2021-30513

The vulnerability poses a serious security risk by allowing remote attackers to potentially corrupt heap memory in the affected systems, leading to potential exploitation and compromise.

Technical Details of CVE-2021-30513

This section delves into the specifics of the vulnerability, including its description, affected systems, versions, and exploitation mechanisms.

Vulnerability Description

The vulnerability involves type confusion in V8 in Google Chrome before version 90.0.4430.212, which can be exploited by remote threat actors through a malicious HTML page to cause heap corruption.

Affected Systems and Versions

Google Chrome versions earlier than 90.0.4430.212 are affected by the type confusion vulnerability in V8, making them susceptible to remote attacks leveraging heap corruption.

Exploitation Mechanism

Remote attackers can exploit this vulnerability by enticing a user to visit a specially crafted HTML page, triggering the type confusion in V8 and potentially leading to heap corruption.

Mitigation and Prevention

This section outlines the steps to mitigate the risk associated with CVE-2021-30513, encompassing immediate actions and long-term security practices.

Immediate Steps to Take

Users and administrators are advised to update Google Chrome to version 90.0.4430.212 or later to patch the type confusion vulnerability and prevent potential exploitation.

Long-Term Security Practices

In addition to immediate updates, maintaining a robust security posture through regular software patching, user awareness training, and proactive monitoring can enhance overall resilience.

Patching and Updates

Regularly monitor vendor security advisories and apply patches promptly to address known vulnerabilities and enhance the security of the environment.