CVE-2023-39784 : Exploit Details and Defense Strategies

A stack overflow vulnerability was discovered in Tenda AC8V4 V16.03.34.06, specifically in the save_virtualser_data function.

Understanding CVE-2023-39784

This section will provide a detailed insight into the CVE-2023-39784 vulnerability.

What is CVE-2023-39784?

CVE-2023-39784 is a stack overflow vulnerability found in Tenda AC8V4 V16.03.34.06, affecting the save_virtualser_data function.

The Impact of CVE-2023-39784

The vulnerability could allow an attacker to execute arbitrary code or trigger a denial of service (DoS) by sending a specially crafted request to the affected system.

Technical Details of CVE-2023-39784

This section will delve into the technical aspects of CVE-2023-39784.

Vulnerability Description

The vulnerability occurs due to improper handling of the 'list' parameter in the save_virtualser_data function, leading to a stack overflow condition.

Affected Systems and Versions

The stack overflow vulnerability affects Tenda AC8V4 V16.03.34.06.

Exploitation Mechanism

An attacker can exploit this vulnerability by sending a malicious 'list' parameter to the save_virtualser_data function, causing a stack overflow and potential code execution.

Mitigation and Prevention

It is crucial to take immediate action to mitigate the risks posed by CVE-2023-39784.

Immediate Steps to Take

Update Tenda AC8V4 V16.03.34.06 to a patched version that addresses the stack overflow vulnerability.
Implement network segmentation and access controls to limit exposure of the vulnerable system.

Long-Term Security Practices

Regularly update and patch all software and firmware to protect against known vulnerabilities.
Conduct security audits and assessments to identify and address potential weaknesses in the system.

Patching and Updates

Stay informed about security updates and patches released by Tenda for the AC8V4 V16.03.34.06 router to ensure timely protection against vulnerabilities.