TOTOLINK X15 Buffer Overflow Vulnerability in HTTP POST Request Handler

A critical buffer overflow vulnerability has been identified in the TOTOLINK X15 router, specifically in version 1.0.0-B20230714.1105. The issue arises within the HTTP POST request handler, in the file '/boafrm/formPortFw'. The vulnerability is triggered by manipulating the 'service_type' argument, allowing for remote exploitation. This buffer overflow could be exploited to cause a denial-of-service condition.

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

To reproduce this vulnerability, send a malicious HTTP POST request to the '/boafrm/formPortFw' endpoint, including a crafted 'service_type' argument that exploits the buffer overflow condition.