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CVE-2021-34561

Estado: ModificadaAlta (8.8)—

In PEPPERL+FUCHS WirelessHART-Gateway <= 3.0.8 serious issue exists, if the application is not externally accessible or uses IP-based access restrictions. Attackers can use DNS Rebinding to bypass any IP or firewall based access restrictions that may be in place, by proxying through their target's browser.

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 (2)

Pepperl-fuchs — Wha-gw-f2d2-0-as-z2-eth.eip FirmwarePepperl-fuchs — Wha-gw-f2d2-0-as-z2-eth Firmware

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-34561",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "info@cert.vde.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.6
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "info@cert.vde.com",
      "affectedData": [
        {
          "vendor": "Phoenix Contact",
          "product": "WHA-GW-F2D2-0-AS- Z2-ETH",
          "versions": [
            {
              "status": "affected",
              "version": "3.0.8",
              "versionType": "custom",
              "lessThanOrEqual": "3.0.8"
            }
          ]
        },
        {
          "vendor": "Phoenix Contact",
          "product": "WHA-GW-F2D2-0-AS- Z2-ETH.EIP",
          "versions": [
            {
              "status": "affected",
              "version": "3.0.8",
              "versionType": "custom",
              "lessThanOrEqual": "3.0.8"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-08-31T11:15:07.467",
  "references": [
    {
      "url": "https://cert.vde.com/en-us/advisories/vde-2021-027",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "info@cert.vde.com"
    },
    {
      "url": "https://cert.vde.com/en-us/advisories/vde-2021-027",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "info@cert.vde.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-350"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In PEPPERL+FUCHS WirelessHART-Gateway <= 3.0.8 serious issue exists, if the application is not externally accessible or uses IP-based access restrictions. Attackers can use DNS Rebinding to bypass any IP or firewall based access restrictions that may be in place, by proxying through their target's browser."
    },
    {
      "lang": "es",
      "value": "En PEPPERL+FUCHS WirelessHART-Gateway versiones anteriores a 3.0.8 incluyéndola, se presenta un problema grave, si la aplicación no es accesible externamente o usa restricciones de acceso basadas en IP. Los atacantes pueden usar DNS Rebinding para omitir cualquier restricción de acceso basada en IP o firewall que pueda presentarse, al hacer proxy mediante el navegador de su objetivo"
    }
  ],
  "lastModified": "2026-06-17T03:56:07.667",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
              "matchCriteriaId": "8D28EDBE-97CB-4253-9BC2-9B97B03B411A",
              "versionEndIncluding": "3.0.8"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
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              "matchCriteriaId": "31ADD5AF-680A-4C79-B219-DAF256FD4D09"
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          ],
          "operator": "OR"
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      ],
      "operator": "AND"
    },
    {
      "nodes": [
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          "cpeMatch": [
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              "vulnerable": true,
              "matchCriteriaId": "3EE619F0-14C8-4670-A1CA-D6B261E63E6F",
              "versionEndIncluding": "3.0.8"
            }
          ],
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        },
        {
          "negate": false,
          "cpeMatch": [
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              "matchCriteriaId": "6B743365-D2E7-4C47-B98B-CD5AFDC1B540"
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          ],
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      ],
      "operator": "AND"
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  ],
  "sourceIdentifier": "info@cert.vde.com"
}