github - ghsa-8gxc-83hw-9578

GHSA-8GXC-83HW-9578

Vulnerability from github – Published: 2022-05-24 17:18 – Updated: 2025-11-03 21:30

Details

Multiple products that implement the IP Encapsulation within IP standard (RFC 2003, STD 1) decapsulate and route IP-in-IP traffic without any validation, which could allow an unauthenticated remote attacker to route arbitrary traffic via an exposed network interface and lead to spoofing, access control bypass, and other unexpected network behaviors.

Severity ?

5.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2020-10136"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-290"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-06-02T09:15:00Z",
    "severity": "MODERATE"
  },
  "details": "Multiple products that implement the IP Encapsulation within IP standard (RFC 2003, STD 1) decapsulate and route IP-in-IP traffic without any validation, which could allow an unauthenticated remote attacker to route arbitrary traffic via an exposed network interface and lead to spoofing, access control bypass, and other unexpected network behaviors.",
  "id": "GHSA-8gxc-83hw-9578",
  "modified": "2025-11-03T21:30:31Z",
  "published": "2022-05-24T17:18:58Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-10136"
    },
    {
      "type": "WEB",
      "url": "https://datatracker.ietf.org/doc/html/rfc6169"
    },
    {
      "type": "WEB",
      "url": "https://kb.cert.org/vuls/id/636397"
    },
    {
      "type": "WEB",
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ipip-dos-kCT9X4"
    },
    {
      "type": "WEB",
      "url": "https://www.digi.com/resources/security"
    },
    {
      "type": "WEB",
      "url": "https://www.kb.cert.org/vuls/id/199397"
    },
    {
      "type": "WEB",
      "url": "https://www.kb.cert.org/vuls/id/636397"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2020-10136 (GCVE-0-2020-10136)

Vulnerability from cvelistv5 – Published: 2020-06-02 08:35 – Updated: 2025-11-03 20:33

Summary

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.

Severity ?

No CVSS data available.

CWE

CWE-290 - Authentication Bypass by Spoofing

Assigner

certcc

References

URL

Tags

	https://kb.cert.org/vuls/id/636397/
	https://tools.cisco.com/security/center/content/C…
	https://www.digi.com/resources/security
	https://www.kb.cert.org/vuls/id/636397
	https://datatracker.ietf.org/doc/html/rfc6169

Impacted products

	Vendor	Product	Version
	IETF	RFC2003 - IP Encapsulation within IP	Affected: STD 1

Credits

Thanks to Yannay Livneh for reporting this issue.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:33:32.981Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "VU#636397",
            "tags": [
              "x_transferred"
            ],
            "url": "https://kb.cert.org/vuls/id/636397/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ipip-dos-kCT9X4"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.digi.com/resources/security"
          },
          {
            "name": "VU#636397",
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.kb.cert.org/vuls/id/636397"
          },
          {
            "name": "Security Concerns with IP Tunneling",
            "tags": [
              "x_transferred"
            ],
            "url": "https://datatracker.ietf.org/doc/html/rfc6169"
          },
          {
            "url": "https://www.kb.cert.org/vuls/id/199397"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "RFC2003 - IP Encapsulation within IP",
          "vendor": "IETF",
          "versions": [
            {
              "status": "affected",
              "version": "STD 1"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Thanks to Yannay Livneh for reporting this issue."
        }
      ],
      "datePublic": "2020-06-01T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "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."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-290",
              "description": "CWE-290 Authentication Bypass by Spoofing",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-06-17T21:10:04.191Z",
        "orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
        "shortName": "certcc"
      },
      "references": [
        {
          "name": "VU#636397",
          "url": "https://kb.cert.org/vuls/id/636397/"
        },
        {
          "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ipip-dos-kCT9X4"
        },
        {
          "url": "https://www.digi.com/resources/security"
        },
        {
          "name": "VU#636397",
          "url": "https://www.kb.cert.org/vuls/id/636397"
        },
        {
          "name": "Security Concerns with IP Tunneling",
          "url": "https://datatracker.ietf.org/doc/html/rfc6169"
        }
      ],
      "solutions": [
        {
          "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."
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "IP-in-IP protocol allows a remote, unauthenticated attacker to route arbitrary network traffic",
      "workarounds": [
        {
          "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)."
        }
      ],
      "x_generator": {
        "engine": "cveClient/1.0.15"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b",
    "assignerShortName": "certcc",
    "cveId": "CVE-2020-10136",
    "datePublished": "2020-06-02T08:35:12.921Z",
    "dateReserved": "2020-03-05T00:00:00.000Z",
    "dateUpdated": "2025-11-03T20:33:32.981Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-8GXC-83HW-9578

CVE-2020-10136 (GCVE-0-2020-10136)

Tags

Sightings

Nomenclature