GO-2022-1083 Panic on malformed messages in github.com/free5gc/aper

A malformed message can crash the free5gc/amf and free5gc/ngap decoders via an index-out-of-range panic in aper.GetBitString...

CVE-2022-43677

In free5GC 3.2.1, a malformed NGAP message can crash the AMF and NGAP decoders via an index-out-of-range panic in aper.GetBitString...