CVE-2021-30515 : What You Need to Know

Google Chrome prior to version 90.0.4430.212 is affected by a use after free vulnerability in the File API. This flaw could allow a remote attacker to exploit heap corruption by tricking a user into visiting a specially crafted HTML page.

Understanding CVE-2021-30515

This CVE record pertains to a security vulnerability found in Google Chrome versions prior to 90.0.4430.212, allowing for potential heap corruption through a use after free vulnerability in the File API.

What is CVE-2021-30515?

The CVE-2021-30515 vulnerability involves a use after free flaw in the File API of Google Chrome, enabling a remote attacker to potentially exploit heap corruption via a maliciously crafted HTML page.

The Impact of CVE-2021-30515

This vulnerability could be exploited by an attacker to execute arbitrary code or trigger a denial of service (DoS) condition on the affected system. Successful exploitation may lead to sensitive information disclosure or system compromise.

Technical Details of CVE-2021-30515

The technical details of CVE-2021-30515 are as follows:

Vulnerability Description

The vulnerability is due to improper handling of memory in the File API of Google Chrome, leading to a use after free condition and potential heap corruption when processing specially crafted HTML content.

Affected Systems and Versions

Google Chrome versions prior to 90.0.4430.212 are affected by this vulnerability. Users and organizations using these versions should take immediate action to mitigate the risk.

Exploitation Mechanism

A remote attacker can exploit this vulnerability by enticing a user to visit a malicious website hosting a specially crafted HTML page designed to trigger the use after free condition.

Mitigation and Prevention

It is crucial to take immediate steps to address CVE-2021-30515 to prevent exploitation and protect systems from potential compromise.

Immediate Steps to Take

Users are advised to update Google Chrome to version 90.0.4430.212 or later to prevent exploitation of this vulnerability. Additionally, exercise caution while browsing untrusted websites or clicking on suspicious links.

Long-Term Security Practices

Implementing regular patch management practices, staying informed about security updates, and engaging in cybersecurity best practices can help enhance overall system security.

Patching and Updates

Regularly check for security updates and patches for Google Chrome to ensure that the latest security fixes are applied. Keeping software up to date is crucial in preventing exploitation of known vulnerabilities.