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CVE-2021-21125 : What You Need to Know

Discover details of CVE-2021-21125, a vulnerability in Google Chrome's File System API prior to 88.0.4324.96 allowing remote attackers to bypass filesystem restrictions via a crafted HTML page. Learn about the impact, technical details, affected systems, exploitation method, and mitigation steps.

A detailed overview of CVE-2021-21125, a vulnerability related to Google Chrome's File System API prior to version 88.0.4324.96.

Understanding CVE-2021-21125

This section covers the essentials of CVE-2021-21125.

What is CVE-2021-21125?

The vulnerability involves insufficient policy enforcement in Chrome's File System API on Windows systems before version 88.0.4324.96. This flaw could be exploited by a remote attacker through a specially crafted HTML page.

The Impact of CVE-2021-21125

The impact includes the bypassing of filesystem restrictions by malicious actors, potentially leading to unauthorized access or information disclosure.

Technical Details of CVE-2021-21125

Explore the technical aspects of CVE-2021-21125 in this section.

Vulnerability Description

Vulnerability stems from inadequate policy enforcement in Chrome's File System API, enabling threat actors to circumvent filesystem controls.

Affected Systems and Versions

Google Chrome versions before 88.0.4324.96 on Windows systems are vulnerable to this security issue.

Exploitation Mechanism

The vulnerability can be exploited remotely by leveraging a specifically crafted HTML page to bypass filesystem restrictions.

Mitigation and Prevention

Discover the steps to mitigate and prevent the CVE-2021-21125 vulnerability.

Immediate Steps to Take

Users should promptly update Google Chrome to version 88.0.4324.96 or later to eliminate the security flaw.

Long-Term Security Practices

Implement robust security practices such as avoiding suspicious websites and regularly updating Chrome to enhance overall security posture.

Patching and Updates

Stay informed about security patches and updates released by Google Chrome to address vulnerabilities like CVE-2021-21125.

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