D-Link DIR-619L Stack-Based Buffer Overflow Vulnerability

A critical stack-based buffer overflow vulnerability has been identified in the D-Link DIR-619L router running firmware version 2.06B01. The issue arises in the 'formWlanGuestSetup' function of the '/goform/formWlanGuestSetup' file, where the 'curTime' argument can be manipulated, leading to arbitrary code execution. This vulnerability can be exploited remotely and affects a product that is no longer supported by the manufacturer.

Impact

Exploitation of this vulnerability allows for a stack-based buffer overflow, which could be used to execute arbitrary code on the device.

Reproduction

To reproduce this vulnerability, send a request to the '/goform/formWlanGuestSetup' endpoint with a crafted 'curTime' argument that exceeds the buffer limit. This will trigger the stack-based buffer overflow condition.