CVE-2021-21183 : Security Advisory and Response

A detailed article outlining the CVE-2021-21183 vulnerability in Google Chrome, affecting versions prior to 89.0.4389.72.

Understanding CVE-2021-21183

This section provides an overview of the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2021-21183?

The CVE-2021-21183 vulnerability involves inappropriate implementation in performance APIs in Google Chrome versions before 89.0.4389.72. This flaw allows a remote attacker to leak cross-origin data via a specially crafted HTML page.

The Impact of CVE-2021-21183

The impact of this vulnerability is significant as it enables malicious actors to access sensitive information across different origins, posing a serious threat to user data security and privacy.

Technical Details of CVE-2021-21183

In this section, we delve into the specific technical aspects of the CVE-2021-21183 vulnerability.

Vulnerability Description

The vulnerability arises from the incorrect implementation of performance APIs, leading to data leakage between origins through malicious HTML pages.

Affected Systems and Versions

Google Chrome versions earlier than 89.0.4389.72 are affected by CVE-2021-21183, exposing users of these versions to potential data leaks.

Exploitation Mechanism

Remote attackers can exploit this vulnerability by creating and enticing users to visit specially-crafted HTML pages that trigger the data leakage.

Mitigation and Prevention

In this section, we discuss various measures to mitigate the risks associated with CVE-2021-21183 and prevent potential exploitation.

Immediate Steps to Take

Users should update their Google Chrome browsers to versions equal to or higher than 89.0.4389.72 to patch the vulnerability and prevent data leakage attacks.

Long-Term Security Practices

Adopting secure browsing habits, avoiding suspicious links, and practicing good cybersecurity hygiene can enhance overall protection against similar vulnerabilities.

Patching and Updates

Regularly updating software, especially web browsers, to the latest versions is crucial in mitigating security risks and staying protected from known vulnerabilities.