CVE-2022-43645 : What You Need to Know

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-825 1.0.9/EE routers without requiring authentication. The flaw exists within the IVI plugin for the xupnpd service, enabling attackers to execute code in the context of the admin user.

Understanding CVE-2022-43645

This section dives into the details of CVE-2022-43645, its impact, technical aspects, and mitigation strategies.

What is CVE-2022-43645?

CVE-2022-43645 is a vulnerability in D-Link DIR-825 1.0.9/EE routers that allows network-adjacent attackers to run arbitrary code without authentication. The flaw lies in the IVI plugin of the xupnpd service on TCP port 4044, where user-supplied strings are not properly validated before executing system calls, leading to code execution as the admin user.

The Impact of CVE-2022-43645

The vulnerability poses a high risk as attackers can exploit it to execute unauthorized code on affected devices, potentially compromising confidentiality, integrity, and availability.

Technical Details of CVE-2022-43645

This section outlines the technical aspects of CVE-2022-43645, including vulnerability description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

CVE-2022-43645 stems from improper validation of user-supplied strings within the IVI plugin of the xupnpd service on D-Link DIR-825 1.0.9/EE routers, allowing attackers to execute code in the context of the admin user.

Affected Systems and Versions

The vulnerability impacts D-Link DIR-825 routers with version 1.0.9, marking them as affected installations susceptible to arbitrary code execution.

Exploitation Mechanism

Attackers can exploit CVE-2022-43645 by sending malicious payloads to the xupnpd service on TCP port 4044, taking advantage of the lack of proper input validation to run unauthorized code.

Mitigation and Prevention

Learn how to protect your network from CVE-2022-43645 through immediate steps and long-term security best practices.

Immediate Steps to Take

Network administrators should restrict access to the xupnpd service, implement firewall rules, and monitor network traffic for suspicious activities to mitigate the risk of exploitation.

Long-Term Security Practices

Ensure timely installation of security patches, conduct regular security assessments, and educate users on safe computing practices to enhance overall network security.

Patching and Updates

Stay informed about security updates released by D-Link for the DIR-825 1.0.9/EE routers to address CVE-2022-43645 and other vulnerabilities, reducing the likelihood of successful attacks.