CVE-2021-21154 : Exploit Details and Defense Strategies
Learn about CVE-2021-21154, a heap buffer overflow vulnerability in Google Chrome versions prior to 88.0.4324.182 that could allow remote attackers to escape the sandbox and execute malicious code.
Heap buffer overflow in Tab Strip in Google Chrome prior to 88.0.4324.182 allowed a remote attacker to potentially perform a sandbox escape through a crafted HTML page.
Understanding CVE-2021-21154
This CVE identifies a heap buffer overflow vulnerability in Google Chrome versions prior to 88.0.4324.182.
What is CVE-2021-21154?
It is a security flaw in the Tab Strip component of Google Chrome that could enable a remote attacker to execute arbitrary code or trigger a denial of service.
The Impact of CVE-2021-21154
The vulnerability could be exploited by a threat actor who had already compromised the renderer process, leading to a potential sandbox escape and further system compromise.
Technical Details of CVE-2021-21154
This section outlines specific technical details of the vulnerability.
Vulnerability Description
The vulnerability is characterized by a heap buffer overflow in the Tab Strip function, which could be exploited by an attacker to elevate privileges or execute malicious actions.
Affected Systems and Versions
Google Chrome versions before 88.0.4324.182 are affected by this vulnerability.
Exploitation Mechanism
An attacker could exploit this vulnerability by leveraging a crafted HTML page to trigger the heap buffer overflow in the Tab Strip function.
Mitigation and Prevention
To safeguard systems from CVE-2021-21154, certain mitigation strategies are recommended.
Immediate Steps to Take
Users should update Google Chrome to version 88.0.4324.182 or newer to mitigate the vulnerability. Additionally, exercise caution when visiting unknown websites or clicking on suspicious links.
Long-Term Security Practices
Regularly update software and apply security patches promptly to prevent exploitation of known vulnerabilities. Implementing robust security measures and employing threat intelligence solutions can also enhance overall cybersecurity posture.
Patching and Updates
Stay informed about security advisories and updates released by Google Chrome. Promptly apply patches and updates to ensure that systems are protected from the latest security threats.