CVE-2022-24172 : Vulnerability Insights and Analysis

A stack overflow vulnerability has been discovered in Tenda routers G1 and G3 v15.11.0.17(9502)_CN, specifically in the function formAddDhcpBindRule. This vulnerability could be exploited by attackers to launch a Denial of Service (DoS) attack through the addDhcpRules parameter.

Understanding CVE-2022-24172

This section will provide insights into the details, impact, and mitigation strategies for CVE-2022-24172.

What is CVE-2022-24172?

The vulnerability identified in Tenda routers G1 and G3 v15.11.0.17(9502)_CN exposes a stack overflow issue in the formAddDhcpBindRule function. Attackers can leverage this flaw to initiate a DoS attack using the addDhcpRules parameter.

The Impact of CVE-2022-24172

The presence of this vulnerability allows malicious actors to disrupt the normal operation of affected Tenda routers, leading to a Denial of Service scenario which may impact network availability.

Technical Details of CVE-2022-24172

In this section, we will delve into the technical aspects of the vulnerability, including the description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

The stack overflow vulnerability in Tenda routers G1 and G3 v15.11.0.17(9502)_CN lies within the formAddDhcpBindRule function, providing an avenue for attackers to trigger a DoS attack by exploiting the addDhcpRules parameter.

Affected Systems and Versions

The affected systems include Tenda routers G1 and G3 running version 15.11.0.17(9502)_CN.

Exploitation Mechanism

The exploitation of this vulnerability involves crafting malicious input using the addDhcpRules parameter to overwhelm the targeted Tenda routers and disrupt their functionality.

Mitigation and Prevention

This section outlines the necessary steps to mitigate the risks posed by CVE-2022-24172 and prevent potential exploitation.

Immediate Steps to Take

Users of Tenda routers G1 and G3 v15.11.0.17(9502)_CN are advised to implement security measures immediately, such as firewall rules and network monitoring, to detect and block any attempts to exploit this vulnerability.

Long-Term Security Practices

To enhance the overall security posture, it is recommended to regularly update the router firmware, apply security patches promptly, and conduct periodic security assessments to identify and address any vulnerabilities.

Patching and Updates

Tenda router users should actively monitor for firmware updates provided by the vendor to address this stack overflow vulnerability. Applying patches in a timely manner is crucial to remediate the security issue and protect the network from potential attacks.