CVE-2019-17567

Estado: ModificadaMedia (5.3)—
Apache HTTP Server versions 2.4.6 to 2.4.46 mod_proxy_wstunnel configured on an URL that is not necessarily Upgraded by the origin server was tunneling the whole connection regardless, thus allowing for subsequent requests on the same connection to pass through with no HTTP validation, authentication or authorization possibly configured.
CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Puntuación base: 5.3
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 60%
Percentil entre todas las CVEs puntuadas: 99
Fecha de la puntuación: 6/10/2026
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 (5)

Apache — Http Server Fedoraproject — Fedora Oracle — Enterprise Manager OPS Center Oracle — Instantis Enterprisetrack Oracle — ZFS Storage Appliance KIT
CWE

CWE-444
Referencias

JSON original (NVD)

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{
  "id": "CVE-2019-17567",
  "cveTags": [],
  "metrics": {
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      {
        "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
      }
    ],
    "cvssMetricV31": [
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          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security@apache.org",
      "affectedData": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache HTTP Server",
          "versions": [
            {
              "status": "affected",
              "version": "2.4.46"
            },
            {
              "status": "affected",
              "version": "2.4.43"
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              "version": "2.4.39"
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              "status": "affected",
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              "status": "affected",
              "version": "2.4.34"
            },
            {
              "status": "affected",
              "version": "2.4.33"
            },
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              "status": "affected",
              "version": "2.4.29"
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              "status": "affected",
              "version": "2.4.28"
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              "status": "affected",
              "version": "2.4.27"
            },
            {
              "status": "affected",
              "version": "2.4.26"
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              "status": "affected",
              "version": "2.4.25"
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              "status": "affected",
              "version": "2.4.23"
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              "status": "affected",
              "version": "2.4.20"
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              "version": "2.4.18"
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              "status": "affected",
              "version": "2.4.16"
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            {
              "status": "affected",
              "version": "2.4.12"
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              "status": "affected",
              "version": "2.4.10"
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            {
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              "version": "2.4.9"
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              "version": "2.4.7"
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              "version": "2.4.6"
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  "published": "2021-06-10T07:15:07.200",
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-444"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Apache HTTP Server versions 2.4.6 to 2.4.46 mod_proxy_wstunnel configured on an URL that is not necessarily Upgraded by the origin server was tunneling the whole connection regardless, thus allowing for subsequent requests on the same connection to pass through with no HTTP validation, authentication or authorization possibly configured."
    },
    {
      "lang": "es",
      "value": "Apache HTTP Server versiones 2.4.6 a 2.4.46 la función mod_proxy_wstunnel configurado en una URL que no es necesariamente Actualizada por el servidor de origen estaba tunelizando toda la conexión a pesar de ello, permitiendo así para las peticiones posteriores en la misma conexión pasar sin comprobación HTTP, autenticación o autorización posiblemente configurada"
    }
  ],
  "lastModified": "2026-06-17T02:24:10.497",
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}