CVE-2021-4101 Explained : Impact and Mitigation
Learn about CVE-2021-4101, a critical heap buffer overflow vulnerability in Google Chrome prior to 96.0.4664.110, allowing remote attackers to exploit system corruption via malicious HTML pages.
A heap buffer overflow vulnerability was identified in Swiftshader in Google Chrome prior to version 96.0.4664.110. This flaw could allow a remote attacker to exploit heap corruption through a maliciously crafted HTML page.
Understanding CVE-2021-4101
This section provides insights into the nature and impact of the CVE-2021-4101 vulnerability.
What is CVE-2021-4101?
The CVE-2021-4101 is a heap buffer overflow vulnerability in Swiftshader in Google Chrome versions prior to 96.0.4664.110. It allows a potential remote attacker to trigger heap corruption by using a specially crafted HTML page.
The Impact of CVE-2021-4101
The impact of this vulnerability is significant as it enables a remote attacker to potentially execute arbitrary code by exploiting the heap corruption in the targeted system.
Technical Details of CVE-2021-4101
In this section, you will find technical details regarding the affected systems, exploitation mechanism, and mitigation practices.
Vulnerability Description
The vulnerability involves a heap buffer overflow in Swiftshader, a component of Google Chrome. Attackers can abuse this flaw to trigger heap corruption.
Affected Systems and Versions
Google Chrome versions prior to 96.0.4664.110 are affected by this vulnerability. Users with these versions are at risk of exploitation.
Exploitation Mechanism
A remote attacker can exploit the heap buffer overflow by enticing a user to visit a malicious website or open a specifically crafted HTML page.
Mitigation and Prevention
This section outlines the immediate steps users can take to protect their systems and prevent exploitation of CVE-2021-4101.
Immediate Steps to Take
Users are advised to update their Google Chrome browser to version 96.0.4664.110 or later to mitigate the risk of exploitation. Additionally, exercising caution while browsing and avoiding suspicious links can help reduce the attack surface.
Long-Term Security Practices
Implementing robust security measures such as regularly updating software, employing security tools, and staying informed about potential threats can enhance overall system security.
Patching and Updates
Stay informed about security updates released by Google Chrome and promptly apply patches to address known vulnerabilities and ensure system security.