CVE-2022-43642 : Vulnerability Insights and Analysis

A vulnerability in D-Link DIR-825 1.0.9/EE routers allows network-adjacent attackers to execute arbitrary code without authentication. This CVE was assigned by ZDI and has a CVSS base score of 8.8.

Understanding CVE-2022-43642

D-Link DIR-825 1.0.9/EE routers are affected by a critical vulnerability that could be exploited by attackers to run arbitrary code.

What is CVE-2022-43642?

The vulnerability in the YouTube plugin for the xupnpd service on TCP port 4044 allows attackers to execute code in the admin user's context without authentication.

The Impact of CVE-2022-43642

This vulnerability has a high impact on confidentiality, integrity, and availability, with a CVSS base score of 8.8.

Technical Details of CVE-2022-43642

The following technical details outline the vulnerability in D-Link DIR-825 routers.

Vulnerability Description

The flaw arises from the lack of proper validation of a user-supplied string before using it to execute a system call, which can lead to code execution.

Affected Systems and Versions

Vendor: D-Link
Product: DIR-825
Versions Affected: 1.0.9

Exploitation Mechanism

Attackers can exploit this vulnerability by leveraging the YouTube plugin for the xupnpd service on TCP port 4044 to execute arbitrary code.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-43642, consider the following steps:

Immediate Steps to Take

Disable the vulnerable service or port if not required.
Apply vendor-supplied patches or updates as soon as they are available.

Long-Term Security Practices

Regularly update firmware and software to ensure protection against known vulnerabilities.
Implement network segmentation and access controls to limit exposure to potential threats.

Patching and Updates

Stay informed about security advisories from D-Link and apply patches promptly to protect your devices.