CVE-2021-21107 : Vulnerability Insights and Analysis

Google Chrome on Linux prior to version 87.0.4280.141 is affected by a use after free vulnerability in the drag and drop functionality. This vulnerability could allow a remote attacker who compromised the renderer process to potentially perform a sandbox escape through a maliciously crafted HTML page.

Understanding CVE-2021-21107

This section delves into the details of CVE-2021-21107, shedding light on the vulnerability, its impact, technical aspects, and mitigation strategies.

What is CVE-2021-21107?

The CVE-2021-21107 vulnerability involves a use after free flaw in the drag and drop feature of Google Chrome on Linux systems prior to version 87.0.4280.141. This vulnerability could be exploited by a remote attacker who has compromised the renderer process.

The Impact of CVE-2021-21107

The impact of this vulnerability is significant as it could lead to a potential sandbox escape, opening doors for attackers to execute arbitrary code and compromise the security of affected systems.

Technical Details of CVE-2021-21107

In this section, we explore the technical details of CVE-2021-21107, including vulnerability description, affected systems, versions, and exploitation mechanisms.

Vulnerability Description

The use after free flaw in the drag and drop functionality of Google Chrome allows attackers to manipulate memory references after they have been freed, potentially leading to unauthorized code execution.

Affected Systems and Versions

Google Chrome running on Linux systems with versions prior to 87.0.4280.141 is vulnerable to CVE-2021-21107, exposing users to exploitation risks.

Exploitation Mechanism

Attackers can exploit this vulnerability by compromising the renderer process and leveraging a specially crafted HTML page to trigger the use after free condition, facilitating a sandbox escape.

Mitigation and Prevention

This section outlines the necessary steps to mitigate the risks posed by CVE-2021-21107 and prevent potential security breaches.

Immediate Steps to Take

Users are advised to update their Google Chrome installations to version 87.0.4280.141 or later to eliminate the use after free vulnerability and enhance the security posture of their systems.

Long-Term Security Practices

Implementing robust security practices such as regular software updates, endpoint protection, and user awareness training can help prevent similar vulnerabilities from being exploited in the future.

Patching and Updates

Stay informed about security advisories and patches released by Google Chrome to address known vulnerabilities and ensure the timely application of updates to safeguard against emerging threats.