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CVE-2020-25720

Estado: AplazadaAlta (7.5)—

A vulnerability was found in Samba where a delegated administrator with permission to create objects in Active Directory can write to all attributes of the newly created object, including security-sensitive attributes, even after the object's creation. This issue occurs because the administrator owns the object due to the lack of an Access Control List (ACL) at the time of creation and later being recognized as the 'creator owner.' The retained significant rights of the delegated administrator may not be well understood, potentially leading to unintended privilege escalation or security risks.

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.

Admin delegado remoto explota falta de ACL en objetos AD creados (T1210, PR:L/N). Escala privilegios modificando atributos sensibles (T1068), manipula cuentas AD (T1098), altera datos de directorio (T1565.001).

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

Threat Intelligence ProgramRestrict File and Directory PermissionsPrivileged Account ManagementNetwork SegmentationDisable or Remove Feature or ProgramApplication Isolation and Sandboxing

Tecnologías afectadas (1)

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

Samba — SambaAI

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2020-25720",
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          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2024-11-17T16:18:39.310986Z"
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        "cvssData": {
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          "baseScore": 7.5,
          "attackVector": "NETWORK",
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          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
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              "version": "0",
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              "versionType": "semver"
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          ],
          "packageName": "samba",
          "collectionURL": "https://git.samba.org/samba.git",
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          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
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          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4",
          "packageName": "rhcos",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
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          "cpes": [
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          "product": "Red Hat Storage 3",
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  "published": "2024-11-17T11:15:04.320",
  "references": [
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      "url": "https://access.redhat.com/security/cve/CVE-2020-25720",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2305954",
      "source": "secalert@redhat.com"
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  "vulnStatus": "Deferred",
  "weaknesses": [
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      "type": "Secondary",
      "source": "secalert@redhat.com",
      "description": [
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          "value": "CWE-266"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability was found in Samba where a delegated administrator with permission to create objects in Active Directory can write to all attributes of the newly created object, including security-sensitive attributes, even after the object's creation. This issue occurs because the administrator owns the object due to the lack of an Access Control List (ACL) at the time of creation and later being recognized as the 'creator owner.' The retained significant rights of the delegated administrator may not be well understood, potentially leading to unintended privilege escalation or security risks."
    },
    {
      "lang": "es",
      "value": "Se encontró una vulnerabilidad en Samba donde un administrador delegado con permiso para crear objetos en Active Directory puede escribir en todos los atributos del objeto recién creado, incluidos los atributos sensibles a la seguridad, incluso después de la creación del objeto. Este problema se produce porque el administrador es el propietario del objeto debido a la falta de una lista de control de acceso (ACL) en el momento de la creación y, posteriormente, se lo reconoce como el \"propietario creador\". Es posible que no se comprendan bien los derechos importantes que conserva el administrador delegado, lo que puede provocar una escalada de privilegios no deseada o riesgos de seguridad."
    }
  ],
  "lastModified": "2026-06-17T03:07:11.440",
  "sourceIdentifier": "secalert@redhat.com"
}