IP-in-IP protocol routes arbitrary traffic by default

Overview IP Encapsulation within IP RFC2003 IP-in-IP can be abused by an unauthenticated attacker to unexpectedly route arbitrary network traffic through a vulnerable device. Description IP-in-IP encapsulation is a tunneling protocol specified in RFC 2003 that allows for IP packets to be...

CVE-2020-10136: Authentication Bypass by Spoofing

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...

CVE-2016-1277

Juniper Junos OS before 12.1X46-D50, 12.1X47 before 12.1X47-D40, 12.3X48 before 12.3X48-D30, 13.3 before 13.3R9, 14.1 before 14.1R8, 14.1X53 before 14.1X53-D40, 14.2 before 14.2R6, 15.1 before 15.1F6 or 15.1R3, and 15.1X49 before 15.1X49-D40, when configured with a GRE or IPIP tunnel, allow remot...

UBUNTU-CVE-2013-4348

The skbflowdissect function in net/core/flowdissector.c in the Linux kernel through 3.12 allows remote attackers to cause a denial of service infinite loop via a small value in the IHL field of a packet with IPIP encapsulation...

CVE-2009-0346

The IP-in-IP packet processing implementation in the IPsec and IP stacks in the kernel in Sun Solaris 9 and 10, and OpenSolaris snv01 though snv85, allows local users to cause a denial of service panic via a self-encapsulated packet that lacks IPsec protection...