CVE-2023-38940 : What You Need to Know

A stack overflow vulnerability affecting Tenda F1203 V2.0.1.6, FH1203 V2.0.1.6, and FH1205 V2.0.0.7(775) has been discovered, allowing attackers to exploit the ssid parameter in the form_fast_setting_wifi_set function.

Understanding CVE-2023-38940

This CVE identifies a security flaw in Tenda routers that could be exploited by malicious actors.

What is CVE-2023-38940?

CVE-2023-38940 involves a stack overflow vulnerability in specific Tenda router models, enabling unauthorized access through a specific parameter.

The Impact of CVE-2023-38940

This vulnerability could lead to remote code execution, unauthorized access to the router, and potential compromise of the network.

Technical Details of CVE-2023-38940

The following section outlines the specific technical aspects of the vulnerability.

Vulnerability Description

The vulnerability arises due to improper handling of the ssid parameter, leading to a stack overflow condition.

Affected Systems and Versions

Tenda F1203 V2.0.1.6, FH1203 V2.0.1.6, and FH1205 V2.0.0.7(775) are confirmed to be impacted by this vulnerability.

Exploitation Mechanism

Attackers can exploit the vulnerability by manipulating the ssid parameter within the form_fast_setting_wifi_set function.

Mitigation and Prevention

To address CVE-2023-38940, users and administrators must take immediate action to secure their Tenda routers.

Immediate Steps to Take

Disable remote management, update to the latest firmware version, and restrict access to the router to known devices only.

Long-Term Security Practices

Regularly monitor for firmware updates, implement strong authentication mechanisms, and conduct security audits to detect potential vulnerabilities.

Patching and Updates

Stay informed about security advisories from Tenda, apply patches promptly, and follow best practices for securing network devices.