CVE-2022-25558 : Security Advisory and Response

A detailed analysis of CVE-2022-25558, a vulnerability found in Tenda AX1806 v1.0.0.1 that could lead to a Denial of Service (DoS) attack.

Understanding CVE-2022-25558

This section will cover what CVE-2022-25558 entails, its impact, technical details, and mitigation strategies.

What is CVE-2022-25558?

The vulnerability in Tenda AX1806 v1.0.0.1 results from a stack overflow in the function formSetProvince. Attackers can exploit this flaw to trigger a DoS attack by manipulating the ProvinceCode parameter.

The Impact of CVE-2022-25558

The presence of this vulnerability exposes affected systems to potential downtime and service disruption due to a successful DoS attack.

Technical Details of CVE-2022-25558

This section delves into a more technical explanation of the vulnerability, including its description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

The stack overflow in the formSetProvince function of Tenda AX1806 v1.0.0.1 allows remote attackers to execute a DoS attack by sending malicious requests with a specially crafted ProvinceCode parameter.

Affected Systems and Versions

The vulnerability affects Tenda AX1806 v1.0.0.1 with all versions prior to the patched release.

Exploitation Mechanism

By exploiting the inadequately validated input in the ProvinceCode parameter, threat actors can overwhelm the device's memory, leading to a service disruption.

Mitigation and Prevention

In this section, we discuss the immediate steps to take to mitigate the risk posed by CVE-2022-25558, as well as long-term security best practices.

Immediate Steps to Take

To address this vulnerability, users should update their Tenda AX1806 devices to the latest firmware version provided by the vendor. Additionally, network segmentation and access controls can help limit exposure to potential attacks.

Long-Term Security Practices

Beyond immediate patching, organizations should implement regular security assessments, educate users on safe practices, and monitor network traffic for any suspicious activity.

Patching and Updates

Regularly check for security updates and patches released by Tenda for the AX1806 series to ensure that systems remain protected from known vulnerabilities.