CVE-2021-37984 : Exploit Details and Defense Strategies
Learn about CVE-2021-37984, a heap buffer overflow vulnerability in Google Chrome versions prior to 95.0.4638.54. Understand the impact, technical details, and mitigation steps.
Heap buffer overflow in PDFium in Google Chrome prior to version 95.0.4638.54 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Understanding CVE-2021-37984
This CVE describes a heap buffer overflow vulnerability in Google Chrome that could be exploited by a remote attacker.
What is CVE-2021-37984?
CVE-2021-37984 is a heap buffer overflow vulnerability in PDFium in Google Chrome versions prior to 95.0.4638.54. It allows a remote attacker to potentially corrupt the heap using a specially crafted HTML page.
The Impact of CVE-2021-37984
The impact of this vulnerability is severe as it enables a remote attacker to execute arbitrary code, leading to potential information disclosure, data loss, and system compromise.
Technical Details of CVE-2021-37984
The technical details of CVE-2021-37984 are as follows:
Vulnerability Description
The vulnerability is characterized by a heap buffer overflow in PDFium, a component of Google Chrome.
Affected Systems and Versions
Google Chrome versions prior to 95.0.4638.54 are affected by this vulnerability.
Exploitation Mechanism
An attacker can exploit this vulnerability by tricking a user into opening a specially crafted HTML page, leading to heap corruption and potential remote code execution.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-37984, follow these guidelines:
Immediate Steps to Take
- Update Google Chrome to version 95.0.4638.54 or later to patch the vulnerability.
- Avoid clicking on suspicious links or downloading files from untrusted sources.
Long-Term Security Practices
- Regularly update your browser and other software to ensure you have the latest security patches installed.
- Implement network security measures and use strong, unique passwords to protect against unauthorized access.
Patching and Updates
Stay informed about security updates from Google Chrome and apply patches promptly to protect your system from known vulnerabilities.