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CVE-2025-7342

Estado: AplazadaAlta (7.5)—

A security issue was discovered in the Kubernetes Image Builder where default credentials are enabled during the Windows image build process when using the Nutanix or VMware OVA providers. These credentials, which allow root access, are disabled at the conclusion of the build. Kubernetes clusters are only affected if their nodes use VM images created via the Image Builder project and the vulnerability was exploited during the build process, which requires an attacker to access the build VM and modify the image while the build is in progress.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

UI:R + acceso remoto a VM en construcción tras interacción del atacante → T1203. Credenciales por defecto habilitadas = T1078.001 (acceso con cuenta válida). Escalada a root durante la compilación = T1068.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Application Isolation and SandboxingExploit ProtectionUpdate SoftwareThreat Intelligence ProgramPassword PoliciesMulti-factor Authentication

Tecnologías afectadas (3)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Kubernetes — Image BuilderAINutanix — NutanixAIVmware — VmwareAI

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2025-7342",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-7342",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-08-18T17:29:34.332110Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "jordan@liggitt.net",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.6
      }
    ]
  },
  "affected": [
    {
      "source": "jordan@liggitt.net",
      "affectedData": [
        {
          "vendor": "Kubernetes",
          "product": "Image Builder",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "versionType": "semver",
              "lessThanOrEqual": "0.1.44"
            },
            {
              "status": "unaffected",
              "version": "0.1.45"
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  "published": "2025-08-17T23:15:26.860",
  "references": [
    {
      "url": "https://github.com/kubernetes/kubernetes/issues/133115",
      "source": "jordan@liggitt.net"
    },
    {
      "url": "https://groups.google.com/g/kubernetes-security-announce/c/tuEsLUQu_PA",
      "source": "jordan@liggitt.net"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2025/07/22/1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Deferred",
  "weaknesses": [
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      "type": "Secondary",
      "source": "jordan@liggitt.net",
      "description": [
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          "value": "CWE-798"
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  "descriptions": [
    {
      "lang": "en",
      "value": "A security issue was discovered in the Kubernetes Image Builder where default credentials are enabled during the Windows image build process when using the Nutanix or VMware OVA providers. These credentials, which allow root access, are disabled at the conclusion of the build. Kubernetes clusters are only affected if their nodes use VM images created via the Image Builder project and the vulnerability was exploited during the build process, which requires an attacker to access the build VM and modify the image while the build is in progress."
    },
    {
      "lang": "es",
      "value": "Se detectó un problema de seguridad en Kubernetes Image Builder, donde las credenciales predeterminadas se habilitan durante el proceso de creación de la imagen. Además, las imágenes de máquinas virtuales creadas con Nutanix u OVA no deshabilitan estas credenciales predeterminadas, y los nodos que utilizan las imágenes resultantes pueden ser accesibles mediante estas credenciales. Estas credenciales se pueden usar para obtener acceso root. Los clústeres de Kubernetes solo se ven afectados si sus nodos de Windows usan imágenes de máquinas virtuales creadas mediante el proyecto Generador de Imágenes con su proveedor Nutanix u OVA."
    }
  ],
  "lastModified": "2026-06-17T10:04:45.500",
  "sourceIdentifier": "jordan@liggitt.net"
}