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CVE-2018-7559

Estado: ModificadaMedia (5.3)—

An issue was discovered in OPC UA .NET Standard Stack and Sample Code before GitHub commit 2018-04-12, and OPC UA .NET Legacy Stack and Sample Code before GitHub commit 2018-03-13. A vulnerability in OPC UA applications can allow a remote attacker to determine a Server's private key by sending carefully constructed bad UserIdentityTokens as part of an oracle attack.

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)

Opcfoundation — Ua-.net-legacyOpcfoundation — Ua-.netstandard

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2018-7559",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 3.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:S/C:P/I:N/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 6.8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.6
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
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      ]
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  ],
  "published": "2018-06-13T18:29:00.620",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/108688",
      "source": "cve@mitre.org"
    },
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      "url": "https://github.com/OPCFoundation/UA-.NET-Legacy/commit/e2a781b38efb8686d2bd850c2f2372b5c670bc45",
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    {
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      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
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    {
      "url": "http://www.securityfocus.com/bid/108688",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "url": "https://github.com/OPCFoundation/UA-.NET-Legacy/commit/e2a781b38efb8686d2bd850c2f2372b5c670bc45",
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    {
      "url": "https://opcfoundation-onlineapplications.org/faq/SecurityBulletins/OPC_Foundation_Security_Bulletin_CVE-2018-7559.pdf",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-320"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in OPC UA .NET Standard Stack and Sample Code before GitHub commit 2018-04-12, and OPC UA .NET Legacy Stack and Sample Code before GitHub commit 2018-03-13. A vulnerability in OPC UA applications can allow a remote attacker to determine a Server's private key by sending carefully constructed bad UserIdentityTokens as part of an oracle attack."
    },
    {
      "lang": "es",
      "value": "Se ha descubierto un problema en OPC UA .NET Standard Stack and Sample Code antes del commit de GitHub del 2018-04-12, así como OPC UA .NET Legacy Stack and Sample Code antes del commit de GitHub del 2018-03-13. Una vulnerabilidad en las aplicaciones de OPC UA puede permitir que un atacante remoto determine la clave privada de un servidor mediante el envío de UserIdentityTokens malos cuidadosamente construidos como parte de un ataque de oráculo."
    }
  ],
  "lastModified": "2026-06-17T02:03:22.213",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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          ],
          "operator": "OR"
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  ],
  "sourceIdentifier": "cve@mitre.org"
}