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CVE-2021-32028

Estado: ModificadaMedia (6.5)—

A flaw was found in postgresql. Using an INSERT ... ON CONFLICT ... DO UPDATE command on a purpose-crafted table, an authenticated database user could read arbitrary bytes of server memory. The highest threat from this vulnerability is to data confidentiality.

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)

Postgresql — Postgresql

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-32028",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "postgresql",
          "versions": [
            {
              "status": "affected",
              "version": "postgresql 13.3, postgresql 12.7, postgresql 11.12, postgresql 10.17, postgresql 9.6.22"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-10-11T17:15:07.727",
  "references": [
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1956877",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Third Party Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://security.gentoo.org/glsa/202211-04",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://security.netapp.com/advisory/ntap-20211112-0003/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://www.postgresql.org/support/security/CVE-2021-32028",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1956877",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://security.gentoo.org/glsa/202211-04",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://security.netapp.com/advisory/ntap-20211112-0003/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.postgresql.org/support/security/CVE-2021-32028",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secalert@redhat.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in postgresql. Using an INSERT ... ON CONFLICT ... DO UPDATE command on a purpose-crafted table, an authenticated database user could read arbitrary bytes of server memory. The highest threat from this vulnerability is to data confidentiality."
    },
    {
      "lang": "es",
      "value": "Se ha encontrado un fallo en postgresql. Usando un comando INSERT ... ON CONFLICT ... DO UPDATE en una tabla diseñada a tal efecto, un usuario autenticado de la base de datos podía leer bytes arbitrarios de la memoria del servidor. La mayor amenaza de esta vulnerabilidad es la confidencialidad de los datos"
    }
  ],
  "lastModified": "2026-06-17T03:52:42.090",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "92EDB262-2CDD-4FA1-833D-D1CDADF5A46E",
              "versionEndExcluding": "9.6.22",
              "versionStartIncluding": "9.6.0"
            },
            {
              "criteria": "cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F81F1D62-430C-4C33-AAD6-DBA73ECA6800",
              "versionEndExcluding": "10.17",
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            },
            {
              "criteria": "cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "95BFF98E-4431-436C-9D04-62CE5AF7F4BA",
              "versionEndExcluding": "11.12",
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            },
            {
              "criteria": "cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4CEB317C-7E3F-4964-9D38-43A483EBFD86",
              "versionEndExcluding": "12.7",
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            },
            {
              "criteria": "cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "925E45D9-7DF8-4914-A384-88CEF05E8B75",
              "versionEndExcluding": "13.3",
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            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secalert@redhat.com"
}