CVE-2020-10136 – IP-in-IP protocol allows a remote, unauthenticated attacker to route arbitrary network traffic

https://notcve.org/view.php?id=CVE-2020-10136

IP-in-IP protocol specifies IP Encapsulation within IP standard (RFC 2003, STD 1) that decapsulate and route IP-in-IP traffic is vulnerable to spoofing, access-control bypass and other unexpected behavior due to the lack of validation to verify network packets before decapsulation and routing. Múltiples productos que implementan la IP Encapsulation dentro del estándar IP (RFC 2003, STD 1) desencapsulan y enrutan el tráfico IP-in-IP sin ninguna comprobación, lo que podría permitir a un atacante remoto no autenticado enrutar tráfico arbitrario por medio de una interfaz de red expuesta y conllevar a una falsificación, omisión de control de acceso y otros comportamientos inesperados de la red. • https://datatracker.ietf.org/doc/html/rfc6169 https://kb.cert.org/vuls/id/636397 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ipip-dos-kCT9X4 https://www.digi.com/resources/security https://www.kb.cert.org/vuls/id/636397 • CWE-290: Authentication Bypass by Spoofing •