UTT 进取 520W Buffer Overflow Vulnerability in ConfigExceptQQ

A buffer overflow vulnerability has been identified in the UTT 进取 520W router, specifically in the firmware version 1.7.7-180627. The issue arises in the 'strcpy' function within the '/goform/ConfigExceptQQ' file. This vulnerability can be exploited remotely, leading to a denial-of-service condition.

Impact

Exploitation of this vulnerability causes a buffer overflow, which can be used to execute arbitrary code or cause a denial-of-service condition.

Reproduction

The vulnerability can be reproduced by sending a POST request to the '/goform/ConfigExceptQQ' endpoint. The request must include a 'Content-Length' header that allows for a sufficiently large payload to be sent, exceeding the buffer capacity and causing an overflow. The 'Authorization' header must also be included, formatted as a Digest authorization with valid credentials.