Tenda i12 Stack-Based Buffer Overflow Vulnerability in Wi-Fi SSID Management Function

A stack-based buffer overflow vulnerability has been identified in the Tenda i12 router, specifically in version 1.0.0.6(2204). The issue arises in the 'formwrlSSIDget' function within the '/goform/wifiSSIDget' file. The vulnerability is triggered by manipulating the 'index' parameter, which allows for remote exploitation. This buffer overflow could lead to a denial-of-service condition or potentially allow for remote 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 '/goform/wifiSSIDget' with a 'wl_radio' parameter set to 1 and an 'index' parameter containing a long string. This unvalidated input is processed by the 'sprintf' function, creating a buffer overflow situation.