Tenda F456 Stack-Based Buffer Overflow Vulnerability

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 'formwebtypelibrary' function within the '/goform/webtypelibrary' file. The vulnerability is triggered by manipulating the 'menufacturer/Go' argument, leading to a buffer overflow condition. This vulnerability can be exploited remotely, and such exploitation is known to be easy.

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/webtypelibrary' endpoint. The request must include a 'webSiteId' parameter with a payload that exceeds the buffer length, effectively overwriting the stack.