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CVE-2018-20803

Estado: ModificadaMedia (6.5)—

A user authorized to perform database queries may trigger denial of service by issuing specially crafted queries, which loop indefinitely in mathematics processing while retaining locks. This issue affects MongoDB Server v4.0 versions prior to 4.0.5; MongoDB Server v3.6 versions prior to 3.6.10 and MongoDB Server v3.4 versions prior to 3.4.19.

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)

Mongodb — Mongodb

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2018-20803",
  "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:N/I:N/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cna@mongodb.com",
        "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:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      },
      {
        "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:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "cna@mongodb.com",
      "affectedData": [
        {
          "vendor": "MongoDB Inc.",
          "product": "MongoDB Server",
          "versions": [
            {
              "status": "affected",
              "version": "4.0",
              "lessThan": "4.0.5",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "3.6",
              "lessThan": "3.6.10",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "3.4",
              "lessThan": "3.4.19",
              "versionType": "custom"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2020-11-23T18:15:10.797",
  "references": [
    {
      "url": "https://jira.mongodb.org/browse/SERVER-38070",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cna@mongodb.com"
    },
    {
      "url": "https://jira.mongodb.org/browse/SERVER-38070",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cna@mongodb.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-835"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-835"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A user authorized to perform database queries may trigger denial of service by issuing specially crafted queries, which loop indefinitely in mathematics processing while retaining locks. This issue affects MongoDB Server v4.0 versions prior to 4.0.5; MongoDB Server v3.6 versions prior to 3.6.10 and MongoDB Server v3.4 versions prior to 3.4.19."
    },
    {
      "lang": "es",
      "value": "Un usuario autorizado para realizar consultas en la base de datos puede desencadenar una denegación de servicio al emitir consultas especialmente diseñadas, que se repiten indefinidamente en el procesamiento matemático mientras retienen bloqueos. Este problema afecta a: MongoDB Server de MongoDB Inc versiones v4.0 anteriores a 4.0.5; versiones v3.6 anteriores a 3.6.10; versiones v3.4 anteriores a 3.4.19"
    }
  ],
  "lastModified": "2026-06-17T01:53:30.427",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4BC313D5-D778-4C35-B9E6-05245F490010",
              "versionEndExcluding": "3.4.19",
              "versionStartIncluding": "3.4.0"
            },
            {
              "criteria": "cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7BA25B25-D37C-45F8-9F21-D7C90FC55C3D",
              "versionEndExcluding": "3.6.10",
              "versionStartIncluding": "3.6.0"
            },
            {
              "criteria": "cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F6F89DDA-DD36-41D2-B4C0-4A25DB322B0F",
              "versionEndExcluding": "4.0.5",
              "versionStartIncluding": "4.0.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cna@mongodb.com"
}