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 4.1.2cu.5232_B20210713 version. The issue arises within an unknown function of the file '/boafrm/formTmultiAP', where the HTTP POST request handler improperly manages the 'submit-url' argument. This vulnerability can be exploited remotely, leading to potential denial-of-service conditions.

Impact

Exploitation of this vulnerability causes a buffer overflow, which can commonly lead to arbitrary code execution or causing the device to crash, creating a denial-of-service condition.

Reproduction

The vulnerability can be reproduced by sending a malicious HTTP POST request to the '/boafrm/formTmultiAP' endpoint, including a crafted 'submit-url' argument that triggers the buffer overflow.