Tenda F453 Buffer Overflow Vulnerability in httpd Component

A buffer overflow vulnerability has been identified in the Tenda F453 router, specifically in version 1.0.0.3. The issue arises in the httpd component, within the formWrlsafeset function of the /goform/AdvSetWrlsafeset file. The vulnerability is triggered by manipulating the mit_ssid_index parameter, which leads to a stack-based buffer overflow. This vulnerability can be exploited remotely, and a public exploit is available.

Impact

Exploitation of this vulnerability causes a buffer overflow, which can lead to stack corruption and potentially allow for arbitrary code execution.

Reproduction

The vulnerability can be reproduced by sending a POST request to the /goform/AdvSetWrlsafeset endpoint. The request must include a payload that manipulates the mit_ssid_index parameter with a sufficiently long string to overflow the buffer. This can be done using a web browser or a tool like curl, by specifying the appropriate headers and cookie information.