fkie_cve-2017-17671
Vulnerability from fkie_nvd
Published
2017-12-14 00:29
Modified
2025-04-20 01:37
Severity ?
Summary
vBulletin through 5.3.x on Windows allows remote PHP code execution because a require_once call is reachable with an unauthenticated request that can include directory traversal sequences to specify an arbitrary pathname, and because ../ traversal is blocked but ..\ traversal is not blocked. For example, an attacker can make an invalid HTTP request containing PHP code, and then make an index.php?routestring= request with enough instances of ".." to reach an Apache HTTP Server log file.
Impacted products
Vendor Product Version
vbulletin vbulletin *
vbulletin vbulletin 5.0.0
vbulletin vbulletin 5.0.0
microsoft windows -



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      "nodes": [
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              "versionEndIncluding": "5.3.3",
              "versionStartIncluding": "5.0.1",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "vBulletin through 5.3.x on Windows allows remote PHP code execution because a require_once call is reachable with an unauthenticated request that can include directory traversal sequences to specify an arbitrary pathname, and because ../ traversal is blocked but ..\\ traversal is not blocked. For example, an attacker can make an invalid HTTP request containing PHP code, and then make an index.php?routestring= request with enough instances of \"..\" to reach an Apache HTTP Server log file."
    },
    {
      "lang": "es",
      "value": "vBulletin hasta las versiones 5.3.x en Windows permite la ejecuci\u00f3n remota de c\u00f3digo PHP debido a que una llamada require_once es alcanzable con una petici\u00f3n que puede incluir secuencias de salto de directorio para especificar un nombre de ruta arbitrario y porque el salto ../ est\u00e1 bloqueado, pero el salto ..\\ no lo est\u00e1. Por ejemplo, un atacante puede realizar una petici\u00f3n HTTP inv\u00e1lida que contiene c\u00f3digo PHP y, a continuaci\u00f3n, realizar una petici\u00f3n index.php?routestring= con las suficientes instancias de \"..\" para alcanzar un archivo de registro de Apache HTTP Server."
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  ],
  "id": "CVE-2017-17671",
  "lastModified": "2025-04-20T01:37:25.860",
  "metrics": {
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        "acInsufInfo": false,
        "baseSeverity": "HIGH",
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          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
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          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
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        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  },
  "published": "2017-12-14T00:29:00.217",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://blogs.securiteam.com/index.php/archives/3569"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Deferred",
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          "lang": "en",
          "value": "CWE-22"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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