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CVE-2021-35551

Estado: ModificadaMedia (5.5)—

Vulnerability in the RDBMS Security component of Oracle Database Server. Supported versions that are affected are 12.2.0.1, 19c and 21c. Easily exploitable vulnerability allows high privileged attacker having DBA privilege with network access via Oracle Net to compromise RDBMS Security. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of RDBMS Security as well as unauthorized update, insert or delete access to some of RDBMS Security accessible data. CVSS 3.1 Base Score 5.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H).

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)

Oracle — Database

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-35551",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-35551",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-09-25T19:14:59.290441Z"
        }
      }
    ],
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 4.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "secalert_us@oracle.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 4.2,
        "exploitabilityScore": 1.2
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 4.2,
        "exploitabilityScore": 1.2
      }
    ]
  },
  "affected": [
    {
      "source": "secalert_us@oracle.com",
      "affectedData": [
        {
          "vendor": "Oracle Corporation",
          "product": "Database - Enterprise Edition",
          "versions": [
            {
              "status": "affected",
              "version": "12.2.0.1"
            },
            {
              "status": "affected",
              "version": "19c"
            },
            {
              "status": "affected",
              "version": "21c"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-10-20T11:16:32.100",
  "references": [
    {
      "url": "https://www.oracle.com/security-alerts/cpuoct2021.html",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "secalert_us@oracle.com"
    },
    {
      "url": "https://www.oracle.com/security-alerts/cpuoct2021.html",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Vulnerability in the RDBMS Security component of Oracle Database Server. Supported versions that are affected are 12.2.0.1, 19c and 21c. Easily exploitable vulnerability allows high privileged attacker having DBA privilege with network access via Oracle Net to compromise RDBMS Security. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of RDBMS Security as well as unauthorized update, insert or delete access to some of RDBMS Security accessible data. CVSS 3.1 Base Score 5.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H)."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en el componente RDBMS Security de Oracle Database Server. Las versiones compatibles que están afectadas son 12.2.0.1, 19c y 21c. Una vulnerabilidad explotable fácilmente permite a un atacante con privilegios de DBA con acceso a la red por medio de Oracle Net, comprometer la seguridad del RDBMS. Los ataques con éxito de esta vulnerabilidad pueden resultar en una capacidad no autorizada de causar una suspensión o un bloqueo que se repite con frecuencia (DOS completa) de RDBMS Security, así como el acceso no autorizado de actualización, inserción o eliminación de algunos de los datos accesibles de RDBMS Security. CVSS 3.1 Puntuación Base 5.5 (impactos en la Integridad y la Disponibilidad). Vector CVSS: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H)"
    }
  ],
  "lastModified": "2026-06-17T03:57:41.380",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:oracle:database:12.2.0.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E221FD4B-190F-4752-9617-FB0C704E7AFD"
            },
            {
              "criteria": "cpe:2.3:a:oracle:database:19c:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3B7038B7-BBBB-4C8A-9479-204E11669A63"
            },
            {
              "criteria": "cpe:2.3:a:oracle:database:21c:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2BD30EF6-606E-416A-B758-43CD75437A3B"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secalert_us@oracle.com"
}