Tenda F456 Buffer Overflow Vulnerability in httpd Component

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 httpd component, within the fromNatlimit function of the /goform/Natlimit file. The vulnerability can be exploited remotely by manipulating the 'page' parameter, leading to potential denial-of-service conditions or arbitrary code execution.

Impact

Exploitation of this vulnerability causes a stack-based buffer overflow, which can lead to arbitrary code execution or a denial-of-service condition.

Reproduction

The vulnerability can be reproduced by sending a POST request to the /goform/Natlimit endpoint. The request must include a 'page' parameter with a payload designed to overflow the stack-based buffer. This can be done using a web browser or a tool like curl, by specifying the appropriate headers and cookie information.