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CVE-2017-7522

Estado: ModificadaMedia (6.5)—

OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to denial-of-service by authenticated remote attacker via sending a certificate with an embedded NULL character.

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 (1)

Openvpn — Openvpn

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2017-7522",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "OpenVPN Technologies, Inc",
          "product": "OpenVPN",
          "versions": [
            {
              "status": "affected",
              "version": "before 2.4.3"
            },
            {
              "status": "affected",
              "version": "before 2.3.17"
            }
          ]
        }
      ]
    }
  ],
  "published": "2017-06-27T13:29:00.273",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/99230",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.securitytracker.com/id/1038768",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/99230",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id/1038768",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secalert@redhat.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to denial-of-service by authenticated remote attacker via sending a certificate with an embedded NULL character."
    },
    {
      "lang": "es",
      "value": "Las versiones de OpenVPN anteriores a 2.4.3 y 2.3.17, son vulnerables a una denegación de servicio por parte de un atacante remoto autenticado mediante el envío de un certificado con un carácter NULL insertado."
    }
  ],
  "lastModified": "2026-06-17T01:24:31.280",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:openvpn:openvpn:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "216840B9-FCDB-4921-BE12-2A1FA42F8FDE",
              "versionEndIncluding": "2.3.16"
            },
            {
              "criteria": "cpe:2.3:a:openvpn:openvpn:2.4.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "84F5C67A-34A4-4C7E-BCA9-AF3E5FC70AF6"
            },
            {
              "criteria": "cpe:2.3:a:openvpn:openvpn:2.4.0:alpha2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A857CA88-60B0-4D34-87B6-770B67981501"
            },
            {
              "criteria": "cpe:2.3:a:openvpn:openvpn:2.4.0:beta1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B42297EE-B347-4BD8-A657-BDF0AA010C06"
            },
            {
              "criteria": "cpe:2.3:a:openvpn:openvpn:2.4.0:beta2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7C7A56E8-09C8-4DB2-9244-9E5E2BEC1821"
            },
            {
              "criteria": "cpe:2.3:a:openvpn:openvpn:2.4.0:rc1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "41ACD637-EF6B-40E4-BDE6-0EE7D6AEBAD4"
            },
            {
              "criteria": "cpe:2.3:a:openvpn:openvpn:2.4.0:rc2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1A4150AD-3F46-487D-BCF8-79D0AE2A092D"
            },
            {
              "criteria": "cpe:2.3:a:openvpn:openvpn:2.4.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E7F7663E-3EB5-44F4-B7DE-294A549A12BE"
            },
            {
              "criteria": "cpe:2.3:a:openvpn:openvpn:2.4.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "81434C3E-F992-4F29-9092-6823989B6909"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secalert@redhat.com"
}