CVE-2021-21206 Explained : Impact and Mitigation
Learn about CVE-2021-21206, a 'Use after free' vulnerability in Google Chrome versions prior to 89.0.4389.128 that could allow remote attackers to exploit heap corruption. Find out the impact, technical details, and mitigation steps.
A detailed overview of CVE-2021-21206, a vulnerability in Google Chrome that could allow a remote attacker to exploit heap corruption through a crafted HTML page.
Understanding CVE-2021-21206
This section provides insights into the impact, technical details, and mitigation strategies related to CVE-2021-21206.
What is CVE-2021-21206?
CVE-2021-21206 is a 'Use after free' vulnerability in Blink in Google Chrome versions prior to 89.0.4389.128. It permits a remote attacker to potentially exploit heap corruption via a specially crafted HTML page.
The Impact of CVE-2021-21206
The vulnerability can result in remote attackers executing arbitrary code, leading to the compromise of user data and system integrity.
Technical Details of CVE-2021-21206
This section delves into the vulnerability description, affected systems and versions, as well as the exploitation mechanism.
Vulnerability Description
The issue lies in the Blink component of Chrome, allowing attackers to manipulate memory allocations after they have been freed, potentially leading to heap corruption.
Affected Systems and Versions
Google Chrome versions prior to 89.0.4389.128 are impacted by this vulnerability, leaving users of these versions at risk of exploitation.
Exploitation Mechanism
Remote attackers can exploit the vulnerability by enticing victims to visit a malicious website containing the crafted HTML page, triggering the 'Use after free' flaw.
Mitigation and Prevention
Discover the immediate steps to take and the long-term security practices to safeguard against CVE-2021-21206.
Immediate Steps to Take
Users should update their Google Chrome browser to version 89.0.4389.128 or later to patch the vulnerability and prevent potential exploitation.
Long-Term Security Practices
Maintain a proactive approach to cybersecurity by regularly updating software, exercising caution while browsing, and implementing robust security measures.
Patching and Updates
Stay informed about security patches and updates released by Google Chrome to address known vulnerabilities and enhance browser security.