CVE-2021-21142 : Vulnerability Insights and Analysis

A detailed overview of CVE-2021-21142, a vulnerability in Google Chrome that allows a remote attacker to potentially perform a sandbox escape via a crafted HTML page.

Understanding CVE-2021-21142

This section provides insights into the nature and impact of the CVE-2021-21142 vulnerability.

What is CVE-2021-21142?

The CVE-2021-21142 vulnerability involves a 'Use after free' issue in Payments in Google Chrome on Mac devices prior to version 88.0.4324.146. This flaw could enable a remote attacker to exploit the browser and potentially escape the sandbox environment by using a maliciously crafted HTML page.

The Impact of CVE-2021-21142

The impact of this vulnerability is significant as it allows an attacker to execute arbitrary code, perform actions on behalf of the user, or even take control of the affected system. By escaping the sandbox, the attacker can bypass security restrictions and escalate privileges, posing a serious threat to user data and system integrity.

Technical Details of CVE-2021-21142

Explore the technical aspects related to CVE-2021-21142 to understand its implications in depth.

Vulnerability Description

The Use after free vulnerability in Payments in Google Chrome on Mac devices can be exploited by an attacker to manipulate memory allocation and potentially execute malicious code, leading to a sandbox escape.

Affected Systems and Versions

Google Chrome versions earlier than 88.0.4324.146 on Mac devices are vulnerable to this exploit. Users with outdated versions are at risk of falling victim to this security issue.

Exploitation Mechanism

By luring a user to visit a malicious webpage containing the crafted HTML code, an attacker can trigger the Use after free flaw, allowing them to compromise the browser's security mechanisms and execute unauthorized actions.

Mitigation and Prevention

Learn about the steps to mitigate the risks associated with CVE-2021-21142 and prevent potential security breaches.

Immediate Steps to Take

Users should update Google Chrome on their Mac devices to version 88.0.4324.146 or later to eliminate the vulnerability and enhance browser security. Additionally, exercising caution when visiting unknown or suspicious websites can help reduce the risk of exploitation.

Long-Term Security Practices

Adopting secure browsing habits, such as avoiding clicking on unverified links and enabling automatic updates for software, can bolster overall cybersecurity posture and protect against future vulnerabilities.

Patching and Updates

Regularly check for security updates and patches released by Google Chrome to stay protected against emerging threats and vulnerabilities. Timely installation of updates is crucial in safeguarding sensitive data and maintaining a secure browsing environment.