nvd-json-data-feeds/CVE-2020/CVE-2020-85xx/CVE-2020-8557.json

{
  "id": "CVE-2020-8557",
  "sourceIdentifier": "jordan@liggitt.net",
  "published": "2020-07-23T17:15:12.513",
  "lastModified": "2023-01-27T20:35:47.857",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "The Kubernetes kubelet component in versions 1.1-1.16.12, 1.17.0-1.17.8 and 1.18.0-1.18.5 do not account for disk usage by a pod which writes to its own /etc/hosts file. The /etc/hosts file mounted in a pod by kubelet is not included by the kubelet eviction manager when calculating ephemeral storage usage by a pod. If a pod writes a large amount of data to the /etc/hosts file, it could fill the storage space of the node and cause the node to fail."
    },
    {
      "lang": "es",
      "value": "El componente kubelet de Kubenetes versiones 1.1-1.16.12, 1.17.0-1.17.8 y 1.18.0-1.18.5, no cuenta para el uso del disco por parte de un pod que escribe en su propio archivo /etc/hosts. El archivo /etc/hosts montado en un pod para kubelet no esta incluido para el administrador de desalojo de kubelet al calcular el uso de almacenamiento ef\u00edmero por un pod. Si un pod escribe una gran cantidad de datos en el archivo /etc/hosts, podr\u00eda llenar el espacio de almacenamiento del nodo y hacer que el nodo presente un fallo"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      },
      {
        "source": "jordan@liggitt.net",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P",
          "accessVector": "LOCAL",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 2.1
        },
        "baseSeverity": "LOW",
        "exploitabilityScore": 3.9,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    },
    {
      "source": "jordan@liggitt.net",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "1.16.13",
              "matchCriteriaId": "12849C27-DD8A-4D84-92FD-3AB32B43742B"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "1.17.0",
              "versionEndExcluding": "1.17.9",
              "matchCriteriaId": "CC1FA454-87A3-480C-BB5E-A23086E2EA99"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "1.18.0",
              "versionEndExcluding": "1.18.6",
              "matchCriteriaId": "3E4009BA-8220-4B8E-8B4B-1ADA1680DD70"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/kubernetes/kubernetes/issues/93032",
      "source": "jordan@liggitt.net",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://groups.google.com/g/kubernetes-security-announce/c/cB_JUsYEKyY/m/vVSO61AhBwAJ",
      "source": "jordan@liggitt.net",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://security.netapp.com/advisory/ntap-20200821-0002/",
      "source": "jordan@liggitt.net",
      "tags": [
        "Third Party Advisory"
      ]
    }
  ]
}