Tenda WH450 Stack-Based Buffer Overflow Vulnerability in HTTP Request Handler

A stack-based buffer overflow vulnerability has been identified in the Tenda WH450 router, specifically in the firmware version 1.0.0.18. The issue arises within the HTTP request handler for the '/goform/onSSIDChange' endpoint, where the 'ssid_index' parameter can be manipulated with excessively long data. This vulnerability can be exploited remotely by unauthenticated attackers, potentially leading to arbitrary code execution or causing a denial-of-service condition.

Impact

Exploitation of this vulnerability allows for a stack-based buffer overflow, which could be leveraged to execute arbitrary code or cause a denial-of-service condition on the affected device.

Reproduction

The vulnerability can be reproduced by sending a GET request to the '/goform/onSSIDChange' endpoint with the 'ssid_index' parameter filled with a string long enough to exceed the buffer's capacity. This can be done using a script that automates the process, such as one written in Python that uses the 'requests' library to send the payload.