Tenda W3 Stack-Based Buffer Overflow Vulnerability in WifiMacFilterGet POST Parameter Handler

A stack-based buffer overflow vulnerability has been identified in the Tenda W3 router, specifically in version 1.0.0.3(2204). The issue arises within the 'formWifiMacFilterGet' function, located in the '/goform/WifiMacFilterGet' file. The vulnerability is triggered by manipulating the 'wl_radio' POST parameter, which is processed without proper size validation, leading to stack corruption. This flaw can be exploited remotely, and a public exploit is available.

Impact

Exploitation of this vulnerability causes stack-based buffer overflow, leading to stack corruption and potential arbitrary code execution.

Reproduction

To reproduce this vulnerability, send a POST request to the '/goform/WifiMacFilterGet' endpoint. Include a 'wl_radio' parameter and an 'index' parameter with a payload that exceeds the buffer size, causing stack overflow. The vulnerability can be exploited remotely.