Tenda i3 Stack-Based Buffer Overflow Vulnerability in WifiMacFilterSet Function

A stack-based buffer overflow vulnerability has been identified in the Tenda i3 router, specifically in version 1.0.0.6(2204). The issue arises in the formWifiMacFilterSet function within the /goform/WifiMacFilterSet file. This vulnerability can be exploited remotely by sending a crafted HTTP POST request with an overly long index parameter, potentially leading to unauthorized memory manipulation.

Impact

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

Reproduction

To reproduce this vulnerability, send a POST request to the /goform/WifiMacFilterSet endpoint. Include a long string in the index parameter to overflow the buffer. The request can be made using a tool that allows HTTP manipulation, such as Burp Suite or a custom script.