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, particularly through the route /boafrm/formMapDel. The vulnerability is triggered by manipulating the devicemac1 argument, which leads to a stack overflow. This buffer overflow can be exploited remotely, and the public exploit is available.

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

To reproduce this vulnerability, send a malicious HTTP POST request to the /boafrm/formMapDel endpoint. Include a crafted devicemac1 argument that exceeds the expected buffer size, which will trigger the buffer overflow. The request should be sent without authentication.