CVE-2022-24973 : Security Advisory and Response

This article provides detailed information about CVE-2022-24973, a vulnerability that allows network-adjacent attackers to execute arbitrary code on TP-Link TL-WR940N routers.

Understanding CVE-2022-24973

This section delves into what CVE-2022-24973 is, its impact, technical details, and mitigation strategies.

What is CVE-2022-24973?

CVE-2022-24973 is a vulnerability in TP-Link TL-WR940N routers that enables attackers to run malicious code with root privileges by exploiting a flaw in the httpd service.

The Impact of CVE-2022-24973

The impact includes executing arbitrary code on the affected routers, requiring authentication for exploitation, with a CVSS base score of 6.8 (Medium severity).

Technical Details of CVE-2022-24973

This section outlines the vulnerability description, affected systems, versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability stems from inadequate validation of user-supplied data length before copying it to a fixed-length stack-based buffer.

Affected Systems and Versions

TP-Link TL-WR940N version 3.20.1 Build 200316 Rel.34392n (5553) routers are impacted by this vulnerability.

Exploitation Mechanism

Attackers leverage the httpd service on TCP port 80 to execute code in the context of root on the affected routers.

Mitigation and Prevention

This section provides guidance on immediate steps to take and long-term security practices to enhance the protection of systems against CVE-2022-24973.

Immediate Steps to Take

It is essential to apply security patches, update firmware, and change default settings to mitigate the risk of exploitation.

Long-Term Security Practices

Implement network segmentation, access controls, and regular security audits to bolster the overall security posture.

Patching and Updates

Stay informed about security updates from TP-Link and promptly apply patches to address vulnerabilities and protect against potential threats.