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CVE-2018-8712

Estado: ModificadaCrítica (9.8)—

An issue was discovered in Webmin 1.840 and 1.880 when the default Yes setting of "Can view any file as a log file" is enabled. As a result of weak default configuration settings, limited users have full access rights to the underlying Unix system files, allowing the user to read sensitive data from the local system (using Local File Include) such as the '/etc/shadow' file via a "GET /syslog/save_log.cgi?view=1&file=/etc/shadow" request.

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)

Webmin — Webmin

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2018-8712",
  "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:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "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": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2018-03-14T19:29:00.830",
  "references": [
    {
      "url": "https://www.7elements.co.uk/resources/technical-advisories/webmin-1-840-1-880-unrestricted-access-arbitrary-files-using-local-file-include/",
      "tags": [
        "Issue Tracking"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.7elements.co.uk/resources/technical-advisories/webmin-1-840-1-880-unrestricted-access-arbitrary-files-using-local-file-include/",
      "tags": [
        "Issue Tracking"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in Webmin 1.840 and 1.880 when the default Yes setting of \"Can view any file as a log file\" is enabled. As a result of weak default configuration settings, limited users have full access rights to the underlying Unix system files, allowing the user to read sensitive data from the local system (using Local File Include) such as the '/etc/shadow' file via a \"GET /syslog/save_log.cgi?view=1&file=/etc/shadow\" request."
    },
    {
      "lang": "es",
      "value": "Se ha descubierto un problema en Webmin 1.840 y 1.880 cuando está habilitada la opción por defecto Yes de \"Can view any file as a log file\". Como resultado de las opciones de configuración por defecto débiles, los usuarios limitados tienen acceso total a los archivos del sistema Unix subyacentes. Esto permite que el usuario lea datos sensibles del sistema local (empleando Local File Include) tales como el archivo \"/etc/shadow\" mediante una petición \"GET /syslog/save_log.cgi?view=1file=/etc/shadow\"."
    }
  ],
  "lastModified": "2026-06-17T02:05:16.587",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:webmin:webmin:1.840:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8C90E884-CC69-40BD-928D-22CB3912CE1C"
            },
            {
              "criteria": "cpe:2.3:a:webmin:webmin:1.880:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "582E63F5-FB43-41C0-9022-FBBEAE5BAA63"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}