D-Link DIR-600L A1 Buffer Overflow Vulnerability in formSetLog 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 formSetLog 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 formSetLog function that includes an overly long curTime parameter. The lack of length checking in the sprintf function allows the excessive input to overflow the buffer.