Tenda F456 Buffer Overflow Vulnerability Allowing Remote Code Execution

A stack-based buffer overflow vulnerability has been identified in the Tenda F456 router, specifically in version 1.0.0.5. The issue arises in the 'fromWrlclientSet' function within the '/goform/WrlclientSet' file of the 'httpd' component. The vulnerability allows remote exploitation, where an attacker can manipulate the 'GO' parameter with a crafted input, leading to stack overflow. This exploitation could result in a denial-of-service condition or allow for remote code execution.

Impact

Exploitation of this vulnerability causes a stack-based buffer overflow, which can be leveraged for remote code execution on the affected device.

Reproduction

The vulnerability can be reproduced by sending a POST request to '/goform/WrlclientSet' with a 'GO' parameter that contains a payload designed to overflow the stack-based buffer. This can be done using a tool like Burp Suite or by crafting a custom script that sends the appropriate request.