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CVE-2020-8569

Estado: ModificadaMedia (6.5)—

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.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Kubernetes — Container Storage Interface Snapshotter

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2020-8569",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
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        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "jordan@liggitt.net",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 2.8
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        "cvssData": {
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  "affected": [
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      "affectedData": [
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          "vendor": "Kubernetes",
          "product": "CSI Snapshotter",
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              "version": "snapshot-controller v3.0",
              "versionType": "custom",
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              "status": "affected",
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  "published": "2021-01-21T17:15:14.250",
  "references": [
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      "tags": [
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      "source": "jordan@liggitt.net"
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  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "jordan@liggitt.net",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
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    {
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      "source": "nvd@nist.gov",
      "description": [
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  "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’t 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, podía entrar en pánico al procesar un recurso personalizado VolumeSnapshot cuando: - El VolumeSnapshot hacía referencia a un PersistentVolumeClaim no existente y el VolumeSnapshot no hacía referencia a ningún VolumeSnapshotClass. - El snapshot-controller se bloquea, Kubernetes lo reinicia automáticamente y procesa el mismo recurso personalizado de VolumeSnapshot después 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 instantáneas de sus volúmenes o eliminar las instantáneas. Todas las demás funciones de Kubernetes no están afectadas"
    }
  ],
  "lastModified": "2026-06-17T03:26:34.210",
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    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:kubernetes:container_storage_interface_snapshotter:*:*:*:*:*:*:*:*",
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}