CVE-2022-43646 Explained : Impact and Mitigation

This article provides details about CVE-2022-43646, a vulnerability that allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-825 1.0.9/EE routers.

Understanding CVE-2022-43646

This section delves into the specifics of the CVE-2022-43646 vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2022-43646?

CVE-2022-43646 enables attackers near the network to run code on vulnerable D-Link DIR-825 1.0.9/EE routers without requiring authentication. The flaw lies within the Vimeo plugin for the xupnpd service on TCP port 4044.

The Impact of CVE-2022-43646

The lack of validation on user-supplied strings allows threat actors to execute system calls, posing a significant risk. Exploitation may lead to arbitrary code execution in the context of the admin user.

Technical Details of CVE-2022-43646

Explore the vulnerability description, affected systems and versions, as well as the exploitation method related to CVE-2022-43646.

Vulnerability Description

The vulnerability in the Vimeo plugin for the xupnpd service exposes D-Link DIR-825 1.0.9/EE routers to code execution by leveraging unvalidated user inputs.

Affected Systems and Versions

D-Link DIR-825 routers with version 1.0.9 are impacted by CVE-2022-43646, highlighting the critical need for immediate action.

Exploitation Mechanism

Threat actors use a lack of string validation to inject and execute arbitrary code via the xupnpd service and the TCP port 4044.

Mitigation and Prevention

Discover the necessary steps to mitigate the risks associated with CVE-2022-43646 and prevent potential exploitation.

Immediate Steps to Take

Promptly update D-Link DIR-825 1.0.9 routers, restrict network access, and monitor for any signs of unauthorized activities.

Long-Term Security Practices

Implement robust security measures, conduct regular security audits, and educate users on safe browsing habits to enhance overall cybersecurity.

Patching and Updates

Stay informed about security patches released by D-Link, ensuring that systems remain up-to-date and protected against known vulnerabilities.