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FKIE_CVE-2021-20440

Vulnerability from fkie_nvd - Published: 2021-03-15 16:15 - Updated: 2026-06-17 03:33
Severity
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Summary
IBM API Connect 10.0.0.0, and 2018.4.1.0 through 2018.4.1.13 does not restrict member registration to the intended recepient. An attacker who is a valid user in the user registry used by API Manager can use a stolen invitation link and register themselves as a member of an API provider organization. IBM X-Force ID: 196536.
References
psirt@us.ibm.comhttps://exchange.xforce.ibmcloud.com/vulnerabilities/196536VDB Entry, Vendor Advisory
psirt@us.ibm.comhttps://www.ibm.com/support/pages/node/6430107Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/196536VDB Entry, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.ibm.com/support/pages/node/6430107Vendor Advisory
Impacted products
Vendor Product Version
ibm api_connect *
ibm api_connect 10.0.0.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "API Connect",
          "vendor": "IBM",
          "versions": [
            {
              "status": "affected",
              "version": "2018.4.1.0"
            },
            {
              "status": "affected",
              "version": "2018.4.1.13"
            },
            {
              "status": "affected",
              "version": "10.0.0.0"
            }
          ]
        }
      ],
      "source": "psirt@us.ibm.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ibm:api_connect:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "403B95C9-40E9-4F9D-AE7D-5B3BC2ECE8A5",
              "versionEndIncluding": "2018.4.1.13",
              "versionStartIncluding": "2018.4.1.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:ibm:api_connect:10.0.0.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "AF48BB29-806D-4613-A1D8-77462461245E",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "IBM API Connect 10.0.0.0, and 2018.4.1.0 through 2018.4.1.13 does not restrict member registration to the intended recepient. An attacker who is a valid user in the user registry used by API Manager can use a stolen invitation link and register themselves as a member of an API provider organization. IBM X-Force ID: 196536."
    },
    {
      "lang": "es",
      "value": "IBM API Connect versiones 10.0.0.0 y 2018.4.1.0 hasta 2018.4.1.13, no restringe el registro de miembros al destinatario previsto.\u0026#xa0;Un atacante que sea un usuario v\u00e1lido en el registro de usuarios usado por API Manager puede usar un enlace de invitaci\u00f3n robado y registrarse como miembro de una organizaci\u00f3n proveedora de API.\u0026#xa0;IBM X-Force ID: 196536"
    }
  ],
  "id": "CVE-2021-20440",
  "lastModified": "2026-06-17T03:33:51.450",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "NONE",
          "baseScore": 4.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 8.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 6.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L",
          "version": "3.0"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 4.7,
        "source": "psirt@us.ibm.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-03-15T16:15:13.217",
  "references": [
    {
      "source": "psirt@us.ibm.com",
      "tags": [
        "VDB Entry",
        "Vendor Advisory"
      ],
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/196536"
    },
    {
      "source": "psirt@us.ibm.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.ibm.com/support/pages/node/6430107"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "VDB Entry",
        "Vendor Advisory"
      ],
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/196536"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.ibm.com/support/pages/node/6430107"
    }
  ],
  "sourceIdentifier": "psirt@us.ibm.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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