D-Link DI-7400G+ mng_platform.asp sub_478D28 command injection

A security flaw has been discovered in D-Link DI-7400G+ 19.12.25A1. Affected is the function sub_478D28 of the file /mng_platform.asp. The manipulation of the argument addr with the input `echo 12345 > poc.txt` results in command injection. An attack on the physical device is feasible. The exploit has been released to the public and may be exploited.