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 the HTTP POST request handler, within the file '/boafrm/formWirelessTbl'. It is triggered by manipulating the 'submit-url' argument, allowing for remote exploitation. This buffer overflow could be exploited to execute a denial-of-service attack.

Impact

Exploitation of this vulnerability leads to a buffer overflow, which can commonly be used to execute arbitrary code or cause a denial-of-service condition by crashing the device.

Reproduction

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