CVE-2021-45392 : Vulnerability Insights and Analysis

A Buffer Overflow vulnerability in Tenda Router AX12 V22.03.01.21_CN allows for a Denial of Service attack.

Understanding CVE-2021-45392

This CVE describes a specific vulnerability in the Tenda Router AX12 model that can be exploited to trigger a denial of service.

What is CVE-2021-45392?

The vulnerability exists in Tenda Router AX12 V22.03.01.21_CN in the sub_422CE4 function in the page /goform/setIPv6Status through the prefixDelegate parameter, enabling a Denial of Service.

The Impact of CVE-2021-45392

The vulnerability can be exploited to cause a Denial of Service on the affected device, potentially disrupting network access and services.

Technical Details of CVE-2021-45392

This section provides more in-depth technical details about the vulnerability.

Vulnerability Description

The Buffer Overflow vulnerability in Tenda Router AX12 V22.03.01.21_CN allows attackers to disrupt the device through a specially crafted request in the prefixDelegate parameter.

Affected Systems and Versions

Product: Tenda Router AX12
Version: V22.03.01.21_CN

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a malicious request to the /goform/setIPv6Status page with a specific prefixDelegate parameter value.

Mitigation and Prevention

Steps to mitigate and prevent the exploitation of CVE-2021-45392.

Immediate Steps to Take

Monitor network traffic for any abnormal activities.
Implement firewall rules to restrict access to vulnerable services.

Long-Term Security Practices

Regularly update firmware and security patches on the Tenda Router AX12.
Conduct security assessments and penetration testing to identify vulnerabilities.

Patching and Updates

Ensure to apply the latest firmware updates provided by Tenda to address the Buffer Overflow vulnerability in the Tenda Router AX12 model.