CVE-2022-43108 : Security Advisory and Response

A stack overflow vulnerability was discovered in Tenda AC23 V16.03.07.45_cn that could be exploited via the firewallEn parameter in the formSetFirewallCfg function.

Understanding CVE-2022-43108

This section will cover the details of CVE-2022-43108 including the vulnerability description, impact, affected systems, exploitation mechanism, mitigation steps, and more.

What is CVE-2022-43108?

CVE-2022-43108 is a stack overflow vulnerability found in Tenda AC23 V16.03.07.45_cn due to improper handling of user input.

The Impact of CVE-2022-43108

The vulnerability allows attackers to potentially execute arbitrary code or crash the affected system, leading to denial of service.

Technical Details of CVE-2022-43108

In this section, we will delve into the technical aspects of CVE-2022-43108.

Vulnerability Description

The vulnerability exists in the firewallEn parameter of the formSetFirewallCfg function, leading to a stack overflow.

Affected Systems and Versions

Tenda AC23 V16.03.07.45_cn is confirmed to be affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specially crafted inputs to the firewallEn parameter, triggering a stack overflow.

Mitigation and Prevention

This section will provide insights into how to mitigate and prevent the exploitation of CVE-2022-43108.

Immediate Steps to Take

Users are advised to update the firmware of Tenda AC23 to a patched version to address the vulnerability.

Long-Term Security Practices

Implement network security best practices such as firewall configurations and access controls to reduce the attack surface.

Patching and Updates

Regularly check for firmware updates and security advisories from Tenda to stay protected against emerging threats.