TOTOLINK EX1200T Buffer Overflow Vulnerability in HTTP POST Request Handler

A critical buffer overflow vulnerability has been identified in the TOTOLINK EX1200T router, specifically in the firmware version 4.1.2cu.5232_B20210713. The vulnerability arises in an unknown function of the file '/boafrm/formPortFw' within the HTTP POST request handler. It is triggered by manipulating the 'service_type' argument, allowing for remote exploitation. This vulnerability could potentially be used to execute a denial-of-service attack by sending a malicious HTTP POST request.

Impact

Exploitation of this vulnerability leads to a buffer overflow, which can commonly result in arbitrary code execution or causing the device to crash, disrupting its normal operation.