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CVE-2017-5636

Status: ModifiedCritical (9.8)—

In Apache NiFi before 0.7.2 and 1.x before 1.1.2 in a cluster environment, the proxy chain serialization/deserialization is vulnerable to an injection attack where a carefully crafted username could impersonate another user and gain their permissions on a replicated request to another node.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Apache — Nifi

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2017-5636",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security@apache.org",
      "affectedData": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache NiFi",
          "versions": [
            {
              "status": "affected",
              "version": "0.7.0"
            },
            {
              "status": "affected",
              "version": "0.7.1"
            },
            {
              "status": "affected",
              "version": "1.1.0"
            },
            {
              "status": "affected",
              "version": "1.1.1"
            }
          ]
        }
      ]
    }
  ],
  "published": "2017-10-19T20:29:00.297",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/96731",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "security@apache.org"
    },
    {
      "url": "https://nifi.apache.org/security.html#CVE-2017-5636",
      "tags": [
        "Issue Tracking",
        "Mitigation",
        "Vendor Advisory"
      ],
      "source": "security@apache.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/96731",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://nifi.apache.org/security.html#CVE-2017-5636",
      "tags": [
        "Issue Tracking",
        "Mitigation",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-74"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In Apache NiFi before 0.7.2 and 1.x before 1.1.2 in a cluster environment, the proxy chain serialization/deserialization is vulnerable to an injection attack where a carefully crafted username could impersonate another user and gain their permissions on a replicated request to another node."
    },
    {
      "lang": "es",
      "value": "En Apache NiFi, en versiones anteriores a la 0.7.2 y versiones 1.x, anteriores a la 1.1.2, en un entorno de clúster, la serialización o deserialización de la cadena proxy es vulnerable a un ataque de inyección en el que un nombre de usuario cuidadosamente manipulado podría suplantar a otro usuario y obtener sus permisos en una petición copiada a otro nodo."
    }
  ],
  "lastModified": "2026-06-17T01:20:53.700",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:apache:nifi:0.7.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "453452AE-C26A-4213-B688-82459159A5F2"
            },
            {
              "criteria": "cpe:2.3:a:apache:nifi:0.7.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3D1A5996-DFC3-4C9E-ABE0-CAF6FCEEF177"
            },
            {
              "criteria": "cpe:2.3:a:apache:nifi:1.1.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "01B8572D-CA8D-4A41-B94A-A393A22B5B9D"
            },
            {
              "criteria": "cpe:2.3:a:apache:nifi:1.1.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "76FDA5E5-6A45-4979-9317-75623A59089F"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@apache.org"
}