CVE-2020-8558
Vulnerability from cvelistv5
Published
2020-07-27 19:55
Modified
2024-09-16 22:40
Severity ?
5.4 (Medium) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Summary
The Kubelet and kube-proxy components in versions 1.1.0-1.16.10, 1.17.0-1.17.6, and 1.18.0-1.18.3 were found to contain a security issue which allows adjacent hosts to reach TCP and UDP services bound to 127.0.0.1 running on the node or in the node's network namespace. Such a service is generally thought to be reachable only by other processes on the same host, but due to this defeect, could be reachable by other hosts on the same LAN as the node, or by containers running on the same node as the service.
References
jordan@liggitt.nethttps://github.com/kubernetes/kubernetes/issues/92315Exploit, Mitigation, Patch, Third Party Advisory
jordan@liggitt.nethttps://groups.google.com/g/kubernetes-announce/c/sI4KmlH3S2I/m/TljjxOBvBQAJExploit, Mailing List, Mitigation, Third Party Advisory
jordan@liggitt.nethttps://security.netapp.com/advisory/ntap-20200821-0001/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/kubernetes/kubernetes/issues/92315Exploit, Mitigation, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://groups.google.com/g/kubernetes-announce/c/sI4KmlH3S2I/m/TljjxOBvBQAJExploit, Mailing List, Mitigation, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20200821-0001/Third Party Advisory
Impacted products
Vendor Product Version
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T10:03:46.112Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/kubernetes/kubernetes/issues/92315"
          },
          {
            "name": "[Security Advisory] CVE-2020-8558: Kubernetes: Node setting allows for neighboring hosts to bypass localhost boundary",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://groups.google.com/g/kubernetes-announce/c/sI4KmlH3S2I/m/TljjxOBvBQAJ"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20200821-0001/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Kubernetes",
          "vendor": "Kubernetes",
          "versions": [
            {
              "status": "affected",
              "version": "prior to 1.18.4"
            },
            {
              "status": "affected",
              "version": "prior to 1.17.7"
            },
            {
              "status": "affected",
              "version": "prior to 1.16.11"
            },
            {
              "status": "affected",
              "version": "1.15"
            },
            {
              "status": "affected",
              "version": "1.14"
            },
            {
              "status": "affected",
              "version": "1.13"
            },
            {
              "status": "affected",
              "version": "1.12"
            },
            {
              "status": "affected",
              "version": "1.11"
            },
            {
              "status": "affected",
              "version": "1.10"
            },
            {
              "status": "affected",
              "version": "1.9"
            },
            {
              "status": "affected",
              "version": "1.8"
            },
            {
              "status": "affected",
              "version": "1.7"
            },
            {
              "status": "affected",
              "version": "1.6"
            },
            {
              "status": "affected",
              "version": "1.5"
            },
            {
              "status": "affected",
              "version": "1.4"
            },
            {
              "status": "affected",
              "version": "1.3"
            },
            {
              "status": "affected",
              "version": "1.2"
            },
            {
              "status": "affected",
              "version": "1.1"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "J\u00e1nos K\u00f6v\u00e9r, Ericsson"
        },
        {
          "lang": "en",
          "value": "Additional impacts reported by Rory McCune, NCC Group and Yuval Avrahami and Ariel Zelivansky, Palo Alto Networks"
        }
      ],
      "datePublic": "2020-04-18T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "The Kubelet and kube-proxy components in versions 1.1.0-1.16.10, 1.17.0-1.17.6, and 1.18.0-1.18.3 were found to contain a security issue which allows adjacent hosts to reach TCP and UDP services bound to 127.0.0.1 running on the node or in the node\u0027s network namespace. Such a service is generally thought to be reachable only by other processes on the same host, but due to this defeect, could be reachable by other hosts on the same LAN as the node, or by containers running on the same node as the service."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-420",
              "description": "CWE-420 Unprotected Alternate Channel",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-08-21T09:06:15",
        "orgId": "a6081bf6-c852-4425-ad4f-a67919267565",
        "shortName": "kubernetes"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/kubernetes/kubernetes/issues/92315"
        },
        {
          "name": "[Security Advisory] CVE-2020-8558: Kubernetes: Node setting allows for neighboring hosts to bypass localhost boundary",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://groups.google.com/g/kubernetes-announce/c/sI4KmlH3S2I/m/TljjxOBvBQAJ"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20200821-0001/"
        }
      ],
      "source": {
        "defect": [
          "https://github.com/kubernetes/kubernetes/issues/90259"
        ],
        "discovery": "USER"
      },
      "title": "Kubernetes node setting allows for neighboring hosts to bypass localhost boundary",
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security@kubernetes.io",
          "DATE_PUBLIC": "2020-04-18T00:00:00.000Z",
          "ID": "CVE-2020-8558",
          "STATE": "PUBLIC",
          "TITLE": "Kubernetes node setting allows for neighboring hosts to bypass localhost boundary"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Kubernetes",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "prior to 1.18.4"
                          },
                          {
                            "version_value": "prior to 1.17.7"
                          },
                          {
                            "version_value": "prior to 1.16.11"
                          },
                          {
                            "version_value": "1.15"
                          },
                          {
                            "version_value": "1.14"
                          },
                          {
                            "version_value": "1.13"
                          },
                          {
                            "version_value": "1.12"
                          },
                          {
                            "version_value": "1.11"
                          },
                          {
                            "version_value": "1.10"
                          },
                          {
                            "version_value": "1.9"
                          },
                          {
                            "version_value": "1.8"
                          },
                          {
                            "version_value": "1.7"
                          },
                          {
                            "version_value": "1.6"
                          },
                          {
                            "version_value": "1.5"
                          },
                          {
                            "version_value": "1.4"
                          },
                          {
                            "version_value": "1.3"
                          },
                          {
                            "version_value": "1.2"
                          },
                          {
                            "version_value": "1.1"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Kubernetes"
              }
            ]
          }
        },
        "credit": [
          {
            "lang": "eng",
            "value": "J\u00e1nos K\u00f6v\u00e9r, Ericsson"
          },
          {
            "lang": "eng",
            "value": "Additional impacts reported by Rory McCune, NCC Group and Yuval Avrahami and Ariel Zelivansky, Palo Alto Networks"
          }
        ],
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "The Kubelet and kube-proxy components in versions 1.1.0-1.16.10, 1.17.0-1.17.6, and 1.18.0-1.18.3 were found to contain a security issue which allows adjacent hosts to reach TCP and UDP services bound to 127.0.0.1 running on the node or in the node\u0027s network namespace. Such a service is generally thought to be reachable only by other processes on the same host, but due to this defeect, could be reachable by other hosts on the same LAN as the node, or by containers running on the same node as the service."
            }
          ]
        },
        "generator": {
          "engine": "Vulnogram 0.0.9"
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-420 Unprotected Alternate Channel"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/kubernetes/kubernetes/issues/92315",
              "refsource": "CONFIRM",
              "url": "https://github.com/kubernetes/kubernetes/issues/92315"
            },
            {
              "name": "[Security Advisory] CVE-2020-8558: Kubernetes: Node setting allows for neighboring hosts to bypass localhost boundary",
              "refsource": "MLIST",
              "url": "https://groups.google.com/g/kubernetes-announce/c/sI4KmlH3S2I/m/TljjxOBvBQAJ"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20200821-0001/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20200821-0001/"
            }
          ]
        },
        "source": {
          "defect": [
            "https://github.com/kubernetes/kubernetes/issues/90259"
          ],
          "discovery": "USER"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a6081bf6-c852-4425-ad4f-a67919267565",
    "assignerShortName": "kubernetes",
    "cveId": "CVE-2020-8558",
    "datePublished": "2020-07-27T19:55:19.321721Z",
    "dateReserved": "2020-02-03T00:00:00",
    "dateUpdated": "2024-09-16T22:40:40.949Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2020-8558\",\"sourceIdentifier\":\"jordan@liggitt.net\",\"published\":\"2020-07-27T20:15:12.413\",\"lastModified\":\"2024-11-21T05:39:01.790\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The Kubelet and kube-proxy components in versions 1.1.0-1.16.10, 1.17.0-1.17.6, and 1.18.0-1.18.3 were found to contain a security issue which allows adjacent hosts to reach TCP and UDP services bound to 127.0.0.1 running on the node or in the node\u0027s network namespace. Such a service is generally thought to be reachable only by other processes on the same host, but due to this defeect, could be reachable by other hosts on the same LAN as the node, or by containers running on the same node as the service.\"},{\"lang\":\"es\",\"value\":\"Se encontr\u00f3 que los componentes Kubelet y kube-proxy en las versiones 1.1.0-1.16.10, 1.17.0-1.17.6 y 1.18.0-1.18.3, contienen un problema de seguridad que permite a los hosts adyacentes alcanzar los servicios TCP y UDP vinculados a la versi\u00f3n 127.0.0.1, que se ejecutan en el nodo o en el espacio de nombres de red del nodo. Dicho servicio se considera generalmente que puede ser alcanzado solo por otros procesos en el mismo host, pero debido a esta defensa, podr\u00edan ser alcanzados por otros hosts en la misma LAN que el nodo o por contenedores que se ejecutan en el mismo nodo que el servicio\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"jordan@liggitt.net\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N\",\"baseScore\":5.4,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":2.5},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":8.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:A/AC:L/Au:N/C:P/I:P/A:P\",\"baseScore\":5.8,\"accessVector\":\"ADJACENT_NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":6.5,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"jordan@liggitt.net\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-420\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-Other\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.1.0\",\"versionEndIncluding\":\"1.16.10\",\"matchCriteriaId\":\"9586C74C-1239-4E96-89A6-F618D14EF889\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.17.0\",\"versionEndIncluding\":\"1.17.6\",\"matchCriteriaId\":\"F7D0C82A-F13C-4D41-854D-51234D20873E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.18.0\",\"versionEndIncluding\":\"1.18.3\",\"matchCriteriaId\":\"FDA694A4-8EC3-47E1-A1F3-CF083D894371\"}]}]}],\"references\":[{\"url\":\"https://github.com/kubernetes/kubernetes/issues/92315\",\"source\":\"jordan@liggitt.net\",\"tags\":[\"Exploit\",\"Mitigation\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://groups.google.com/g/kubernetes-announce/c/sI4KmlH3S2I/m/TljjxOBvBQAJ\",\"source\":\"jordan@liggitt.net\",\"tags\":[\"Exploit\",\"Mailing List\",\"Mitigation\",\"Third Party Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20200821-0001/\",\"source\":\"jordan@liggitt.net\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/kubernetes/kubernetes/issues/92315\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Mitigation\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://groups.google.com/g/kubernetes-announce/c/sI4KmlH3S2I/m/TljjxOBvBQAJ\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Mailing List\",\"Mitigation\",\"Third Party Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20200821-0001/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.