CVE-2020-17470

An issue was discovered in FNET through 4.6.4. The code that initializes the DNS client interface structure does not set sufficiently random transaction IDs (they are always set to 1 in _fnet_dns_poll in fnet_dns.c). This significantly simplifies DNS cache poisoning attacks.

An issue was discovered in FNET through 4.6.4. The code that initializes the DNS client interface structure does not set sufficiently random transaction IDs (they are always set to 1 in _fnet_dns_poll in fnet_dns.c). This significantly simplifies DNS cache poisoning attacks.

Se detectó un problema en FNET versiones hasta 4.6.4. El código que inicializa la estructura de la interfaz del cliente DNS no establece ID de transacción suficientemente aleatorios (siempre se establecen en 1 en la función _fnet_dns_poll en el archivo fnet_dns.c). Esto simplifica significativamente los ataques de envenenamiento de la caché de DNS