Vulnerability-Lookup

FKIE_CVE-2020-8559

Vulnerability from fkie_nvd - Published: 2020-07-22 14:15 - Updated: 2026-06-17 03:26

Severity

6.4 (Medium) - CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
6.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

Summary

The Kubernetes kube-apiserver in versions v1.6-v1.15, and versions prior to v1.16.13, v1.17.9 and v1.18.6 are vulnerable to an unvalidated redirect on proxied upgrade requests that could allow an attacker to escalate privileges from a node compromise to a full cluster compromise.

References

URL	Tags
jordan@liggitt.net	https://github.com/kubernetes/kubernetes/issues/92914	Exploit, Issue Tracking, Patch, Third Party Advisory
jordan@liggitt.net	https://groups.google.com/d/msg/kubernetes-security-announce/JAIGG5yNROs/19nHQ5wkBwAJ	Exploit, Third Party Advisory
jordan@liggitt.net	https://security.netapp.com/advisory/ntap-20200810-0004/	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/kubernetes/kubernetes/issues/92914	Exploit, Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://groups.google.com/d/msg/kubernetes-security-announce/JAIGG5yNROs/19nHQ5wkBwAJ	Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://security.netapp.com/advisory/ntap-20200810-0004/	Third Party Advisory

Impacted products

Vendor	Product	Version
kubernetes	kubernetes	*
kubernetes	kubernetes	*
kubernetes	kubernetes	*
kubernetes	kubernetes	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Kubernetes",
          "vendor": "Kubernetes",
          "versions": [
            {
              "status": "affected",
              "version": "1.6"
            },
            {
              "status": "affected",
              "version": "1.7"
            },
            {
              "status": "affected",
              "version": "1.8"
            },
            {
              "status": "affected",
              "version": "1.9"
            },
            {
              "status": "affected",
              "version": "1.10"
            },
            {
              "status": "affected",
              "version": "1.11"
            },
            {
              "status": "affected",
              "version": "1.12"
            },
            {
              "status": "affected",
              "version": "1.13"
            },
            {
              "status": "affected",
              "version": "1.14"
            },
            {
              "status": "affected",
              "version": "1.15"
            },
            {
              "lessThanOrEqual": "1.16.12",
              "status": "affected",
              "version": "1.16",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "1.17.8",
              "status": "affected",
              "version": "1.17",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "1.18.5",
              "status": "affected",
              "version": "1.18",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "jordan@liggitt.net"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "43222A9D-6D48-490F-8120-349DCE1C1218",
              "versionEndIncluding": "1.15.0",
              "versionStartIncluding": "1.6.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "FE1EA8C5-2EF4-4462-B693-FE20B3DF75C6",
              "versionEndExcluding": "1.16.13",
              "versionStartIncluding": "1.16.0",
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            },
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              "versionEndExcluding": "1.17.9",
              "versionStartIncluding": "1.17.0",
              "vulnerable": true
            },
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              "matchCriteriaId": "3E4009BA-8220-4B8E-8B4B-1ADA1680DD70",
              "versionEndExcluding": "1.18.6",
              "versionStartIncluding": "1.18.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Kubernetes kube-apiserver in versions v1.6-v1.15, and versions prior to v1.16.13, v1.17.9 and v1.18.6 are vulnerable to an unvalidated redirect on proxied upgrade requests that could allow an attacker to escalate privileges from a node compromise to a full cluster compromise."
    },
    {
      "lang": "es",
      "value": "El Kubernetes kube-apiserver en versiones v1.6-v1.15 y versiones anteriores a v1.16.13, v1.17.9 y v1.18.6, son vulnerables a un redireccionamiento no validado en las peticiones de actualizaci\u00f3n proxy que podr\u00edan permitir a un atacante escalar privilegios desde un compromiso de nodo a un compromiso del cl\u00faster completo"
    }
  ],
  "id": "CVE-2020-8559",
  "lastModified": "2026-06-17T03:26:33.127",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.0,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:S/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 6.8,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.4,
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          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 0.5,
        "impactScore": 5.9,
        "source": "jordan@liggitt.net",
        "type": "Secondary"
      },
      {
        "cvssData": {
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          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.8,
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          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
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        "exploitabilityScore": 0.9,
        "impactScore": 5.9,
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  },
  "published": "2020-07-22T14:15:16.517",
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    },
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      "tags": [
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        "Third Party Advisory"
      ],
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    },
    {
      "source": "jordan@liggitt.net",
      "tags": [
        "Third Party Advisory"
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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        "Exploit",
        "Issue Tracking",
        "Patch",
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://groups.google.com/d/msg/kubernetes-security-announce/JAIGG5yNROs/19nHQ5wkBwAJ"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.netapp.com/advisory/ntap-20200810-0004/"
    }
  ],
  "sourceIdentifier": "jordan@liggitt.net",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-601"
        }
      ],
      "source": "jordan@liggitt.net",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-601"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2020-8559 (GCVE-0-2020-8559)

Vulnerability from cvelistv5 – Published: 2020-07-22 13:47 – Updated: 2024-09-16 17:58

Title

Privilege escalation from compromised node to cluster

Summary

Severity

6.4 (Medium)


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

CWE

CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

Assigner

kubernetes mitre root

References

3 references

URL	Tags
https://groups.google.com/d/msg/kubernetes-securi…	x_refsource_MISC
https://github.com/kubernetes/kubernetes/issues/92914	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2020081…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
Kubernetes	Kubernetes	Affected: 1.6 Affected: 1.7 Affected: 1.8 Affected: 1.9 Affected: 1.10 Affected: 1.11 Affected: 1.12 Affected: 1.13 Affected: 1.14 Affected: 1.15 Affected: 1.16 , ≤ 1.16.12 (custom) Affected: 1.17 , ≤ 1.17.8 (custom) Affected: 1.18 , ≤ 1.18.5 (custom)

Date Public

2020-07-15 00:00

Credits

Wouter ter Maat of Offensi

Show details on NVD website

JSON

To clipboard

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  "containers": {
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          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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          },
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            "url": "https://security.netapp.com/advisory/ntap-20200810-0004/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "product": "Kubernetes",
          "vendor": "Kubernetes",
          "versions": [
            {
              "status": "affected",
              "version": "1.6"
            },
            {
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          "url": "https://security.netapp.com/advisory/ntap-20200810-0004/"
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      "source": {
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.