D-Link DIR-600L A1 Buffer Overflow Vulnerability in formAdvNetwork Function

A buffer overflow vulnerability has been identified in the D-Link DIR-600L A1 router running firmware version FW116WWb01. The issue arises in the formAdvNetwork function, where the curTime parameter is processed without proper length validation, allowing for excessive input to overflow the buffer.

Impact

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

Reproduction

The vulnerability can be reproduced by sending a crafted request to the router's formAdvNetwork function. The request must include a curTime parameter with a payload that exceeds the buffer's capacity. This can be done using a tool like Burp Suite to intercept and modify the request before it is sent to the router.