Novastar CX40 NetFilter Utility netconfig getopt stack-based overflow

A vulnerability was found in Novastar CX40 up to 2.44.0. It has been rated as critical. This issue affects the function getopt of the file /usr/nova/bin/netconfig of the component NetFilter Utility. The manipulation of the argument cmd/netmask/pipeout/nettask leads to stack-based buffer overflow. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.