Belkin F9K1015 Buffer Overflow Vulnerability in PPTP Setup

A buffer overflow vulnerability has been identified in the Belkin F9K1015 router, specifically in version 1.00.10. The issue arises in the file '/goform/formPPTPSetup', where the 'pptpUserName' parameter is processed without proper length validation. This flaw allows for a stack-based buffer overflow, which can be exploited remotely.

Impact

Exploitation of this vulnerability leads to a stack-based buffer overflow, which can commonly result in arbitrary code execution or causing a denial-of-service condition.

Reproduction

The vulnerability can be reproduced by sending a POST request to '/goform/formPPTPSetup' with a 'pptpUserName' parameter that exceeds the buffer's capacity. The lack of length checks in the handling of this parameter allows for the buffer overflow to occur.