{
  "id": "CVE-2021-40871",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2021-11-10T23:15:08.240",
  "lastModified": "2021-11-16T14:47:43.080",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in Softing Industrial Automation OPC UA C++ SDK before 5.66. Remote attackers to cause a denial of service (DoS) by sending crafted messages to a OPC/UA client. The client process may crash unexpectedly because of a wrong type cast, and must be restarted."
    },
    {
      "lang": "es",
      "value": "Se ha detectado un problema en Softing Industrial Automation OPC UA C++ SDK versiones anteriores a 5.66. Unos atacantes remotos pueden causar una denegaci\u00f3n de servicio (DoS) mediante el env\u00edo de mensajes dise\u00f1ados a un cliente OPC/UA. El proceso del cliente puede bloquearse inesperadamente debido a un reparto de tipos err\u00f3neo, y debe reiniciarse"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-843"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:softing:datafeed_opc_suite:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "5.18",
              "matchCriteriaId": "9C103B04-ACCD-418F-8FCA-A1E6D3F65765"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:softing:opc:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "5.66",
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            },
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              "vulnerable": true,
              "criteria": "cpe:2.3:a:softing:secure_integration_server:*:*:*:*:*:*:*:*",
              "versionEndIncluding": "1.22",
              "matchCriteriaId": "788D765F-4A20-49CC-BC97-483E69AB63C7"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:softing:th_scope:*:*:*:*:*:*:*:*",
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            }
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  ],
  "references": [
    {
      "url": "https://industrial.softing.com/",
      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://industrial.softing.com/fileadmin/sof-files/pdf/ia/support/Security_Bulletin-CVE-2021-40871.pdf",
      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}