D-Link DIR-513 Stack Buffer Overflow Vulnerability

A stack buffer overflow vulnerability has been identified in the D-Link DIR-513 router, specifically in version 1.10. The vulnerability arises in the goform/formSetWanPPTP component, where the webPage parameter can be manipulated to cause the overflow.

Impact

Exploitation of this vulnerability leads to a stack buffer overflow, which can commonly result in arbitrary code execution or causing the device to crash.

Reproduction

To reproduce this vulnerability, send a POST request to the /goform/formSetWanPPTP endpoint. Include a crafted webPage parameter that exceeds the buffer size, effectively causing a stack buffer overflow. The request should be made with a user agent that mimics a web browser.