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CVE-2017-0248

Estado: ModificadaAlta (7.5)—💥 PoC

Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7 allow an attacker to bypass Enhanced Security Usage taggings when they present a certificate that is invalid for a specific use, aka ".NET Security Feature Bypass Vulnerability."

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).

💥 Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

⚠️ Las pruebas de concepto de GitHub no están verificadas: algunas son falsas o contienen malware. No las ejecute nunca fuera de un laboratorio aislado.

Tecnologías afectadas (1)

Microsoft — .net Framework

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2017-0248",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
        {
          "vendor": "Microsoft Corporation",
          "product": "Microsoft .NET Framework",
          "versions": [
            {
              "status": "affected",
              "version": "Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7"
            }
          ]
        }
      ]
    }
  ],
  "published": "2017-05-12T14:29:03.973",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/98117",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://www.securitytracker.com/id/1038458",
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0248",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/98117",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id/1038458",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0248",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-295"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7 allow an attacker to bypass Enhanced Security Usage taggings when they present a certificate that is invalid for a specific use, aka \".NET Security Feature Bypass Vulnerability.\""
    },
    {
      "lang": "es",
      "value": "Microsoft .NET Framework versiones 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 y 4.7, permiten a un atacante omitir las etiquetas de Enhanced Security Usage cuando presentan un certificado que no es válido para un uso específico, también se conoce como \".NET Security Feature Bypass Vulnerability.\""
    }
  ],
  "lastModified": "2026-06-17T00:57:20.390",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:microsoft:.net_framework:2.0:sp2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "42A6DF09-B8E1-414D-97E7-453566055279"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E039CE1F-B988-4741-AE2E-5B36E2AF9688"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8EDC4407-7E92-4E60-82F0-0C87D1860D3A"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:.net_framework:4.5.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "40B3A045-B08A-44E0-91BE-726753F6A362"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:.net_framework:4.6:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "280FE663-23BE-45D2-9B31-5F577E390B48"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:.net_framework:4.6.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FF0B660D-1F30-4D45-B98B-726EDB8CB90F"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A16AD2B0-2189-4E8E-B7FC-CE598CA1CB2D"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "734112B3-1383-4BE3-8721-C0F84566B764"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secure@microsoft.com"
}