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/formSysLog'. The vulnerability is triggered by manipulating the 'submit-url' argument, which leads to a buffer overflow. This flaw can be exploited remotely, potentially allowing for a denial-of-service attack by sending a malicious HTTP POST request.

Impact

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

Reproduction

The vulnerability can be reproduced by sending an HTTP POST request to the '/boafrm/formSysLog' endpoint with a crafted 'submit-url' argument that exceeds the buffer size, causing a buffer overflow condition.