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CVE-2020-12689

Estado: ModificadaAlta (8.8)—

An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. Any user authenticated within a limited scope (trust/oauth/application credential) can create an EC2 credential with an escalated permission, such as obtaining admin while the user is on a limited viewer role. This potentially allows a malicious user to act as the admin on a project another user has the admin role on, which can effectively grant that user global admin privileges.

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 (2)

Canonical — Ubuntu LinuxOpenstack — Keystone

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2020-12689",
  "cveTags": [],
  "metrics": {
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        "source": "nvd@nist.gov",
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          "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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          "privilegesRequired": "LOW",
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        "impactScore": 5.9,
        "exploitabilityScore": 2.8
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  "affected": [
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      "affectedData": [
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  "published": "2020-05-07T00:15:10.877",
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-269"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. Any user authenticated within a limited scope (trust/oauth/application credential) can create an EC2 credential with an escalated permission, such as obtaining admin while the user is on a limited viewer role. This potentially allows a malicious user to act as the admin on a project another user has the admin role on, which can effectively grant that user global admin privileges."
    },
    {
      "lang": "es",
      "value": "Se detectó un problema en OpenStack Keystone en versiones anteriores a la 15.0.1 y 16.0.0. Cualquier usuario autenticado dentro de un alcance limitado (credencial de confianza/autorización/aplicación) puede crear una credencial EC2 con un permiso escalado, como obtener administrador mientras el usuario tiene un rol de visor limitado. Potencialmente, esto permite que un usuario malintencionado actúe como administrador en un proyecto en el que otro usuario tiene la función de administrador, lo que efectivamente puede otorgarle a ese usuario privilegios de administrador global."
    }
  ],
  "lastModified": "2026-06-17T02:52:08.333",
  "configurations": [
    {
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}