NicheStack DNS client does not set sufficiently random source ports
InterNiche (, 4.3), fixed in 4.3
An issue was discovered in HCC embedded InterNiche 4.0.1. This vulnerability allows the attacker to predict a DNS query's source port in order to send forged DNS response packets that will be accepted as valid answers to the DNS client's requests (without sniffing the specific request). Data is predictable because it is based on the time of day, and has too few bits.
No PoC is supplied for this issue
No vulnerability mitigations are supplied for this issue