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CVE-2021-27738

Estado: ModificadaAlta (7.5)—

All request mappings in `StreamingCoordinatorController.java` handling `/kylin/api/streaming_coordinator/*` REST API endpoints did not include any security checks, which allowed an unauthenticated user to issue arbitrary requests, such as assigning/unassigning of streaming cubes, creation/modification and deletion of replica sets, to the Kylin Coordinator. For endpoints accepting node details in HTTP message body, unauthenticated (but limited) server-side request forgery (SSRF) can be achieved. This issue affects Apache Kylin Apache Kylin 3 versions prior to 3.1.2.

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)

Apache — Kylin

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-27738",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security@apache.org",
      "affectedData": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache Kylin",
          "versions": [
            {
              "status": "affected",
              "version": "Apache Kylin 3",
              "lessThan": "3.1.2",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2022-01-06T13:15:07.967",
  "references": [
    {
      "url": "http://www.openwall.com/lists/oss-security/2022/01/06/6",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
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      "source": "security@apache.org"
    },
    {
      "url": "https://lists.apache.org/thread/vkohh0to2vzwymyb2x13fszs3cs3vd70",
      "tags": [
        "Mailing List",
        "Vendor Advisory"
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      "source": "security@apache.org"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2022/01/06/6",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.apache.org/thread/vkohh0to2vzwymyb2x13fszs3cs3vd70",
      "tags": [
        "Mailing List",
        "Vendor Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@apache.org",
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "All request mappings in `StreamingCoordinatorController.java` handling `/kylin/api/streaming_coordinator/*` REST API endpoints did not include any security checks, which allowed an unauthenticated user to issue arbitrary requests, such as assigning/unassigning of streaming cubes, creation/modification and deletion of replica sets, to the Kylin Coordinator. For endpoints accepting node details in HTTP message body, unauthenticated (but limited) server-side request forgery (SSRF) can be achieved. This issue affects Apache Kylin Apache Kylin 3 versions prior to 3.1.2."
    },
    {
      "lang": "es",
      "value": "Todos los mapeos de peticiones en \"StreamingCoordinatorController.java\" que manejan los endpoints de la API REST \"/kylin/api/streaming_coordinator/*\" no incluían ninguna comprobación de seguridad, lo que permitía a un usuario no autenticado emitir peticiones arbitrarias, como la asignación/desasignación de cubos de streaming, la creación/modificación y la eliminación de conjuntos de réplicas, al Coordinador de Kylin. Para los endpoints que aceptan detalles de nodos en el cuerpo del mensaje HTTP, puede lograrse un ataque de tipo server-side request forgery (SSRF) no autenticado (pero limitado). Este problema afecta a Apache Kylin versiones 3 anteriores a la 3.1.2."
    }
  ],
  "lastModified": "2026-06-17T03:45:23.560",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:apache:kylin:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "48BA5B55-79AE-4B6A-A367-0DE069E9BD12",
              "versionEndExcluding": "3.1.2",
              "versionStartIncluding": "3.0.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@apache.org"
}