Tenda F453 Buffer Overflow Vulnerability in L7Im Form Allowing Remote Code Execution

A critical buffer overflow vulnerability has been identified in the Tenda F453 router, specifically in version 1.0.0.3. The issue arises in the 'frmL7ImForm' function within the '/goform/L7Im' file, where the 'page' argument is manipulated, leading 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 manipulation and potentially allow for arbitrary code execution on the device.

Reproduction

The vulnerability can be reproduced by sending a POST request to '/goform/L7Im' with a 'page' parameter that contains a payload designed to overflow the buffer. The request should include headers that mimic a standard browser request, such as 'User-Agent' and 'Accept-Language'.