CVE-2022-21806 Explained : Impact and Mitigation

This article provides detailed information about CVE-2022-21806, a critical use-after-free vulnerability discovered in the Anker Eufy Homebase 2 version 2.1.8.5h, leading to remote code execution.

Understanding CVE-2022-21806

This section delves into the severity, impact, and affected systems of CVE-2022-21806.

What is CVE-2022-21806?

CVE-2022-21806 is a use-after-free vulnerability in the mips_collector appsrv_server functionality of Anker Eufy Homebase 2 2.1.8.5h. It allows attackers to execute remote code via specially-crafted network packets, posing a significant risk to device security.

The Impact of CVE-2022-21806

With a CVSS base score of 10, indicating critical severity, this vulnerability has a high impact on confidentiality, integrity, and availability. The attack vector is over the network with low complexity, affecting systems without user interaction.

Technical Details of CVE-2022-21806

This section outlines the vulnerability description, affected systems, and the exploitation mechanism of CVE-2022-21806.

Vulnerability Description

The use-after-free bug in Anker Eufy Homebase 2 2.1.8.5h enables threat actors to craft malicious network packets, triggering remote code execution and potentially compromising the device's security.

Affected Systems and Versions

The vulnerability affects Anker Eufy Homebase 2 version 2.1.8.5h, exposing devices to remote attacks over the network.

Exploitation Mechanism

By sending a specially-crafted set of network packets, attackers can exploit the use-after-free vulnerability to achieve remote code execution on vulnerable devices.

Mitigation and Prevention

This section provides guidance on immediate steps to take and long-term security practices to mitigate the risks associated with CVE-2022-21806.

Immediate Steps to Take

Users are advised to implement security patches promptly, restrict network access to vulnerable devices, and monitor network traffic for suspicious activities.

Long-Term Security Practices

Maintaining up-to-date firmware, network segmentation, implementing intrusion detection systems, and regular security audits are essential for long-term security.

Patching and Updates

Anker should release patches addressing the use-after-free vulnerability in Eufy Homebase 2 2.1.8.5h to eliminate the risk of remote code execution.