FKIE_CVE-2020-12526

Vulnerability from fkie_nvd - Published: 2021-05-13 14:15 - Updated: 2024-11-21 04:59
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Summary
TwinCAT OPC UA Server in versions up to 2.3.0.12 and IPC Diagnostics UA Server in versions up to 3.1.0.1 from Beckhoff Automation GmbH & Co. KG are vulnerable to denial of service attacks. The attacker needs to send several specifically crafted requests to the running OPC UA server. After some of these requests the OPC UA server is no longer responsive to any client. This is without effect to the real-time functionality of IPCs.
References
info@cert.vde.comhttps://cert.vde.com/en-us/advisories/vde-2020-051Third Party Advisory
info@cert.vde.comhttps://download.beckhoff.com/download/Document/product-security/Advisories/advisory-2021-001.pdfVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://cert.vde.com/en-us/advisories/vde-2020-051Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://download.beckhoff.com/download/Document/product-security/Advisories/advisory-2021-001.pdfVendor Advisory
Impacted products
Vendor Product Version
beckhoff ipc_diagnostics_ua_server *
beckhoff tf6100 *
beckhoff twincat_opc_ua_server *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:beckhoff:ipc_diagnostics_ua_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F2F63E85-BE46-46AE-BED7-5D4963672BEE",
              "versionEndIncluding": "3.1.0.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:beckhoff:tf6100:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5BE81331-ED73-4B59-BE98-E064A2C32B02",
              "versionEndIncluding": "3.3.18",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:beckhoff:twincat_opc_ua_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "FFE1FF2F-5E28-4114-BCD5-B33B3898901E",
              "versionEndIncluding": "2.3.0.12",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "TwinCAT OPC UA Server in versions up to 2.3.0.12 and IPC Diagnostics UA Server in versions up to 3.1.0.1 from Beckhoff Automation GmbH \u0026 Co. KG are vulnerable to denial of service attacks. The attacker needs to send several specifically crafted requests to the running OPC UA server. After some of these requests the OPC UA server is no longer responsive to any client. This is without effect to the real-time functionality of IPCs."
    },
    {
      "lang": "es",
      "value": "TwinCAT OPC UA Server en versiones hasta 2.3.0.12 e IPC Diagnostics UA Server en versiones hasta 3.1.0.1 de Beckhoff Automation GmbH \u0026amp; Co. KG son vulnerables a ataques de denegaci\u00f3n de servicio.\u0026#xa0;El atacante necesita enviar varias peticiones dise\u00f1adas espec\u00edficamente al servidor OPC UA en ejecuci\u00f3n.\u0026#xa0;Despu\u00e9s de algunas de estas peticiones, el servidor OPC UA ya no responde a ning\u00fan cliente.\u0026#xa0;Esto no afecta a la funcionalidad en tiempo real de los IPC"
    }
  ],
  "id": "CVE-2020-12526",
  "lastModified": "2024-11-21T04:59:52.260",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "info@cert.vde.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-05-13T14:15:17.457",
  "references": [
    {
      "source": "info@cert.vde.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://cert.vde.com/en-us/advisories/vde-2020-051"
    },
    {
      "source": "info@cert.vde.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://download.beckhoff.com/download/Document/product-security/Advisories/advisory-2021-001.pdf"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://cert.vde.com/en-us/advisories/vde-2020-051"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://download.beckhoff.com/download/Document/product-security/Advisories/advisory-2021-001.pdf"
    }
  ],
  "sourceIdentifier": "info@cert.vde.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "info@cert.vde.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Detection rules are retrieved from Rulezet.