FKIE_CVE-2020-8569

Vulnerability from fkie_nvd - Published: 2021-01-21 17:15 - Updated: 2024-11-21 05:39
Severity
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
Kubernetes CSI snapshot-controller prior to v2.1.3 and v3.0.2 could panic when processing a VolumeSnapshot custom resource when: - The VolumeSnapshot referenced a non-existing PersistentVolumeClaim and the VolumeSnapshot did not reference any VolumeSnapshotClass. - The snapshot-controller crashes, is automatically restarted by Kubernetes, and processes the same VolumeSnapshot custom resource after the restart, entering an endless crashloop. Only the volume snapshot feature is affected by this vulnerability. When exploited, users can’t take snapshots of their volumes or delete the snapshots. All other Kubernetes functionality is not affected.
References
jordan@liggitt.nethttps://github.com/kubernetes-csi/external-snapshotter/issues/380Exploit, Third Party Advisory
jordan@liggitt.nethttps://groups.google.com/g/kubernetes-security-announce/c/1EzCr1qUxxUMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/kubernetes-csi/external-snapshotter/issues/380Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://groups.google.com/g/kubernetes-security-announce/c/1EzCr1qUxxUMailing List, Third Party Advisory
Impacted products
Vendor Product Version
kubernetes container_storage_interface_snapshotter *
kubernetes container_storage_interface_snapshotter *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:kubernetes:container_storage_interface_snapshotter:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "1609D4D8-E5EF-418C-B81E-22066045A439",
              "versionEndExcluding": "2.1.3",
              "versionStartIncluding": "2.1.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:kubernetes:container_storage_interface_snapshotter:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "446F2CD3-BCE5-41DF-AD1F-3A97A2B8D59E",
              "versionEndExcluding": "3.0.2",
              "versionStartIncluding": "3.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Kubernetes CSI snapshot-controller prior to v2.1.3 and v3.0.2 could panic when processing a VolumeSnapshot custom resource when: - The VolumeSnapshot referenced a non-existing PersistentVolumeClaim and the VolumeSnapshot did not reference any VolumeSnapshotClass. - The snapshot-controller crashes, is automatically restarted by Kubernetes, and processes the same VolumeSnapshot custom resource after the restart, entering an endless crashloop. Only the volume snapshot feature is affected by this vulnerability. When exploited, users can\u2019t take snapshots of their volumes or delete the snapshots. All other Kubernetes functionality is not affected."
    },
    {
      "lang": "es",
      "value": "Kubernetes CSI snapshot-controller versiones v2.1.3 y v3.0.2, pod\u00eda entrar en p\u00e1nico al procesar un recurso personalizado VolumeSnapshot cuando: - El VolumeSnapshot hac\u00eda referencia a un PersistentVolumeClaim no existente y el VolumeSnapshot no hac\u00eda referencia a ning\u00fan VolumeSnapshotClass. - El snapshot-controller se bloquea, Kubernetes lo reinicia autom\u00e1ticamente y procesa el mismo recurso personalizado de VolumeSnapshot despu\u00e9s del reinicio, ingresando en un bucle de bloqueo sin fin. Esta vulnerabilidad solo afecta a la funcionalidad volume snapshot. Cuando se explotaba, los usuarios no pueden tomar instant\u00e1neas de sus vol\u00famenes o eliminar las instant\u00e1neas. Todas las dem\u00e1s funciones de Kubernetes no est\u00e1n afectadas"
    }
  ],
  "id": "CVE-2020-8569",
  "lastModified": "2024-11-21T05:39:03.003",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "jordan@liggitt.net",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-01-21T17:15:14.250",
  "references": [
    {
      "source": "jordan@liggitt.net",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://github.com/kubernetes-csi/external-snapshotter/issues/380"
    },
    {
      "source": "jordan@liggitt.net",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "https://groups.google.com/g/kubernetes-security-announce/c/1EzCr1qUxxU"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://github.com/kubernetes-csi/external-snapshotter/issues/380"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "https://groups.google.com/g/kubernetes-security-announce/c/1EzCr1qUxxU"
    }
  ],
  "sourceIdentifier": "jordan@liggitt.net",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "jordan@liggitt.net",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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