D-Link DIR-600L A1 Buffer Overflow Vulnerability in formSetDomainFilter 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 formSetDomainFilter 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 router with a curTime parameter that exceeds the buffer's capacity. The formSetDomainFilter function will then copy the input into a local variable without checking the length, causing a buffer overflow.