D-Link DIR-600L A1 Buffer Overflow Vulnerability in Email Configuration 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 'formSetEmail' 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 request to the 'formSetEmail' function with an overly long 'curTime' parameter. The lack of length checking in the 'sprintf' function allows the excessive input to overflow the buffer.