CVE-2021-21162 : Vulnerability Insights and Analysis
Get insights into CVE-2021-20657, a critical vulnerability in Google Chrome versions before 89.0.4389.72, allowing remote attackers to exploit heap corruption. Learn about the impact, technical details, and mitigation steps.
A detailed overview of CVE-2021-20657, a vulnerability in Google Chrome prior to version 89.0.4389.72 that allowed remote attackers to exploit heap corruption via a crafted HTML page.
Understanding CVE-2021-20657
This section delves into the specifics of CVE-2021-20657.
What is CVE-2021-20657?
The CVE-2021-20657 vulnerability involves a 'Use after free' issue in WebRTC in Google Chrome versions prior to 89.0.4389.72. This flaw could be exploited by a remote attacker through a specially crafted HTML page.
The Impact of CVE-2021-20657
The vulnerability could potentially lead to heap corruption, allowing an attacker to execute arbitrary code or crash the application, posing a serious security risk to affected systems.
Technical Details of CVE-2021-20657
This section provides technical insights into CVE-2021-20657.
Vulnerability Description
The vulnerability arises due to a use after free issue in WebRTC, which could be triggered by an attacker through a malicious HTML page.
Affected Systems and Versions
Google Chrome versions prior to 89.0.4389.72 are affected by this vulnerability, leaving them susceptible to exploitation.
Exploitation Mechanism
Remote attackers can exploit this vulnerability by enticing a victim to visit a specially crafted HTML page, triggering the use after free issue and potentially leading to heap corruption.
Mitigation and Prevention
Understanding how to mitigate and prevent the CVE-2021-20657 vulnerability is crucial.
Immediate Steps to Take
Users are advised to update Google Chrome to version 89.0.4389.72 or later to mitigate the risk of exploitation.
Long-Term Security Practices
Maintaining up-to-date software, exercising caution when browsing unfamiliar websites, and employing security tools like antivirus software can enhance overall cybersecurity posture.
Patching and Updates
Regularly checking for and applying software updates, especially security patches from trusted sources, is essential to protect systems from known vulnerabilities.