CVE-2021-21940 : What You Need to Know
Learn about CVE-2021-21940, a critical heap-based buffer overflow vulnerability in Anker Eufy Homebase 2 2.1.6.9h. Understand its impact, affected systems, and mitigation steps.
A heap-based buffer overflow vulnerability has been identified in the Anker Eufy Homebase 2 2.1.6.9h. This vulnerability exists in the pushMuxer processRtspInfo functionality, allowing an attacker to trigger a heap buffer overflow by sending a specially-crafted network packet.
Understanding CVE-2021-21940
This section will cover what CVE-2021-21940 is, its impact, technical details, and how to mitigate the associated risks.
What is CVE-2021-21940?
The CWE-122: Heap-based Buffer Overflow vulnerability in Anker Eufy Homebase 2 2.1.6.9h allows an attacker to exploit the pushMuxer processRtspInfo functionality to trigger a heap buffer overflow through a malicious network packet.
The Impact of CVE-2021-21940
The CVSS v3.0 base score of 10 (Critical) indicates the high impact of this vulnerability. It affects confidentiality, integrity, and availability, with no privileges required for exploitation.
Technical Details of CVE-2021-21940
Let's delve into the specifics of this vulnerability: its description, affected systems and versions, and the exploitation mechanism.
Vulnerability Description
A heap-based buffer overflow occurs in the pushMuxer processRtspInfo functionality of Anker Eufy Homebase 2 2.1.6.9h, triggered by a specially-crafted network packet.
Affected Systems and Versions
The vulnerability affects Anker Eufy Homebase 2 version 2.1.6.9h specifically.
Exploitation Mechanism
By sending a malicious packet, an attacker can exploit the pushMuxer processRtspInfo functionality to trigger the heap buffer overflow.
Mitigation and Prevention
Find out how to address CVE-2021-21940 effectively and prevent potential exploitation.
Immediate Steps to Take
To mitigate the risks associated with this vulnerability, apply security patches and follow the guidelines provided by Anker.
Long-Term Security Practices
Implement robust security measures, including network segmentation and traffic monitoring, to enhance protection against buffer overflow attacks.
Patching and Updates
Regularly check for security updates from Anker to address vulnerabilities and improve the overall security posture of your system.