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CVE-2021-21175 : What You Need to Know

Learn about CVE-2021-21175, a security vulnerability in Google Chrome before 89.0.4389.72 allowing remote attackers to leak cross-origin data. Find out the impact and mitigation steps.

This article provides detailed information about CVE-2021-21175, a vulnerability found in Google Chrome prior to version 89.0.4389.72 that allowed a remote attacker to leak cross-origin data via a crafted HTML page.

Understanding CVE-2021-21175

CVE-2021-21175 is a security vulnerability in Google Chrome that arises from inappropriate implementation in Site Isolation, allowing malicious actors to extract cross-origin data through a specially designed HTML page.

What is CVE-2021-21175?

The vulnerability in Google Chrome before version 89.0.4389.72 enables a remote attacker to access and extract cross-origin data by exploiting flaws in the browser's Site Isolation mechanism.

The Impact of CVE-2021-21175

The impact of CVE-2021-21175 is significant as it can lead to unauthorized access and extraction of cross-origin data, posing a serious threat to user privacy and sensitive information.

Technical Details of CVE-2021-21175

CVE ID: CVE-2021-21175 Vendor: Google Affected Product: Chrome Vulnerable Version: Prior to 89.0.4389.72

Vulnerability Description

The vulnerability arises from inappropriate implementation in Site Isolation, allowing a remote attacker to leak cross-origin data via a malicious HTML page.

Affected Systems and Versions

Google Chrome versions prior to 89.0.4389.72 are affected by this vulnerability.

Exploitation Mechanism

An attacker can exploit this vulnerability by crafting a specific HTML page to extract cross-origin data through Google Chrome.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-21175, immediate steps should be taken to enhance security measures and protect sensitive data.

Immediate Steps to Take

Users are advised to update Google Chrome to version 89.0.4389.72 or later to address this vulnerability.

Long-Term Security Practices

Implementing secure browsing habits and keeping software up to date are essential for maintaining a safe online environment.

Patching and Updates

Regularly check for security updates and apply patches to ensure that systems are protected against known vulnerabilities.

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