CVE-2021-4062 : Vulnerability Insights and Analysis
Learn about CVE-2021-4062, a heap buffer overflow vulnerability in Google Chrome prior to 96.0.4664.93 allowing remote attackers to exploit heap corruption via a crafted HTML page.
Heap buffer overflow in BFCache in Google Chrome prior to version 96.0.4664.93 allowed a remote attacker to potentially exploit heap corruption through a crafted HTML page.
Understanding CVE-2021-4062
This CVE identifier pertains to a heap buffer overflow vulnerability found in Google Chrome before version 96.0.4664.93.
What is CVE-2021-4062?
CVE-2021-4062 refers to a security issue in Google Chrome that enabled a remote attacker who had compromised the renderer process to potentially exploit heap corruption by utilizing a specifically crafted HTML page.
The Impact of CVE-2021-4062
The heap buffer overflow vulnerability in BFCache of Google Chrome could allow malicious actors to trigger heap corruption, increasing the risk of arbitrary code execution and potential system compromise.
Technical Details of CVE-2021-4062
This section provides more insight into the vulnerability.
Vulnerability Description
The vulnerability arises from an unchecked buffer in BFCache of Google Chrome before version 96.0.4664.93, leading to potential heap corruption when processing maliciously created HTML content.
Affected Systems and Versions
Google Chrome versions earlier than 96.0.4664.93 are confirmed to be impacted by this vulnerability.
Exploitation Mechanism
An attacker with control over the renderer process could construct a malicious HTML page to trigger the heap buffer overflow, thereby gaining the ability to exploit heap corruption and potentially execute arbitrary code.
Mitigation and Prevention
To address CVE-2021-4062, consider the following security measures.
Immediate Steps to Take
Users are advised to update their Google Chrome browser to version 96.0.4664.93 or newer to mitigate the risk of exploitation.
Long-Term Security Practices
It is recommended to stay vigilant regarding security updates and patches released by Google to stay protected from such vulnerabilities in the future.
Patching and Updates
Regularly check for and apply updates from the official Google Chrome sources to ensure that your browser is equipped with the latest security enhancements and fixes.