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CVE-2018-10896

Estado: ModificadaAlta (7.1)—

The default cloud-init configuration, in cloud-init 0.6.2 and newer, included "ssh_deletekeys: 0", disabling cloud-init's deletion of ssh host keys. In some environments, this could lead to instances created by cloning a golden master or template system, sharing ssh host keys, and being able to impersonate one another or conduct man-in-the-middle attacks.

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)

Canonical — Cloud-init

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2018-10896",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 3.6,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
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        "acInsufInfo": false,
        "impactScore": 4.9,
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        "obtainAllPrivilege": false,
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        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
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      }
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    "cvssMetricV30": [
      {
        "type": "Secondary",
        "source": "secalert@redhat.com",
        "cvssData": {
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          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
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    "cvssMetricV31": [
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        "type": "Primary",
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  "affected": [
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      "affectedData": [
        {
          "vendor": "Canonical",
          "product": "cloud-init",
          "versions": [
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              "version": "0.6.2"
            }
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  "published": "2018-08-01T17:29:00.393",
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secalert@redhat.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-321"
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    {
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      "description": [
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          "lang": "en",
          "value": "NVD-CWE-noinfo"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The default cloud-init configuration, in cloud-init 0.6.2 and newer, included \"ssh_deletekeys: 0\", disabling cloud-init's deletion of ssh host keys. In some environments, this could lead to instances created by cloning a golden master or template system, sharing ssh host keys, and being able to impersonate one another or conduct man-in-the-middle attacks."
    },
    {
      "lang": "es",
      "value": "La configuración por defecto en cloud-init, en versiones a partir de la 0.6.2, incluía \"ssh_deletekeys: 0\", deshabilitando la eliminación de cloud-init de claves de host ssh. En algunos entornos, esto podría conducir a que se creen instancias creadas al clonar un sistema golden master o template, a que se compartan claves de host ssh o a que se pueda suplantar a otro o llevar a cabo ataques de Man-in-the-Middle (MitM)."
    }
  ],
  "lastModified": "2026-06-17T01:34:51.937",
  "configurations": [
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}