CVE-2022-25556 Explained : Impact and Mitigation

Tenda AX12 v22.03.01.21 was discovered to contain a stack overflow vulnerability in the function sub_42E328, allowing attackers to launch a Denial of Service (DoS) attack via the list parameter.

Understanding CVE-2022-25556

This section delves into the details of CVE-2022-25556, highlighting the impact, technical aspects, and mitigation strategies.

What is CVE-2022-25556?

The CVE-2022-25556 vulnerability affects Tenda AX12 v22.03.01.21, enabling bad actors to disrupt the device's operation by exploiting a stack overflow in the sub_42E328 function.

The Impact of CVE-2022-25556

The vulnerability poses a significant risk as it provides attackers with the means to perform a DoS attack by manipulating the list parameter, potentially leading to service unavailability.

Technical Details of CVE-2022-25556

This section examines the technical aspects of the CVE, including the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

A stack overflow vulnerability in the sub_42E328 function of Tenda AX12 v22.03.01.21 allows threat actors to initiate a DoS attack through malicious manipulation of the list parameter.

Affected Systems and Versions

The vulnerability impacts Tenda AX12 devices running version v22.03.01.21, leaving them susceptible to exploitation and potential service disruption.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specifically crafted requests to the affected device, causing a stack overflow and subsequently triggering a DoS condition.

Mitigation and Prevention

In this section, we explore the necessary steps to mitigate the risks posed by CVE-2022-25556 and prevent future vulnerabilities.

Immediate Steps to Take

Update Tenda AX12 devices to the latest firmware version to patch the stack overflow vulnerability.
Implement network security measures to filter and monitor incoming requests for anomalous behavior.

Long-Term Security Practices

Regularly monitor and apply security updates to all network-connected devices to address potential vulnerabilities promptly.
Conduct routine security assessments and penetration testing to identify and remediate any security weaknesses.

Patching and Updates

Stay informed about security advisories from Tenda and apply patches promptly to ensure the protection of devices against known vulnerabilities.