The DNS feature in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Buffer Overflow. The impact is: execute arbitrary code (remote). The component is: DNS response processing functions: dns_upcall() getoffset() dnc_set_answer(). The attack vector is: a specific DNS response packet. The code does not check the \response data length\ field of individual DNS answers which may cause out-of-bounds read/write operations leading to Information leak Denial-or-Service or Remote Code Execution depending on the context.