cvelist/2020/10xxx/CVE-2020-10136.json

{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2020-10136",
        "ASSIGNER": "cert@cert.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "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."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-290 Authentication Bypass by Spoofing",
                        "cweId": "CWE-290"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "IETF",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "RFC2003 - IP Encapsulation within IP",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "STD 1"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://kb.cert.org/vuls/id/636397/",
                "refsource": "MISC",
                "name": "https://kb.cert.org/vuls/id/636397/"
            },
            {
                "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ipip-dos-kCT9X4",
                "refsource": "MISC",
                "name": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ipip-dos-kCT9X4"
            },
            {
                "url": "https://www.digi.com/resources/security",
                "refsource": "MISC",
                "name": "https://www.digi.com/resources/security"
            },
            {
                "url": "https://www.kb.cert.org/vuls/id/636397",
                "refsource": "MISC",
                "name": "https://www.kb.cert.org/vuls/id/636397"
            },
            {
                "url": "https://datatracker.ietf.org/doc/html/rfc6169",
                "refsource": "MISC",
                "name": "https://datatracker.ietf.org/doc/html/rfc6169"
            }
        ]
    },
    "generator": {
        "engine": "cveClient/1.0.15"
    },
    "source": {
        "discovery": "EXTERNAL"
    },
    "work_around": [
        {
            "lang": "en",
            "value": "Users can block IP-in-IP packets by filtering IP protocol number 4. Note this filtering is for the IPv4 Protocol (or IPv6 Next Header) field value of 4 and not IP protocol version 4 (IPv4)."
        }
    ],
    "solution": [
        {
            "lang": "en",
            "value": "Customers should apply the latest patch provided by the affected vendor that addresses this issue and prevents unspecified IP-in-IP packets from being processed. Devices manufacturers are urged to disable IP-in-IP in their default configuration and require their customers to explicitly configure IP-in-IP as and when needed."
        }
    ],
    "credits": [
        {
            "lang": "en",
            "value": "Thanks to Yannay Livneh for reporting this issue."
        }
    ]
}