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CVE-2020-8635

Estado: ModificadaAlta (7.8)—

Wing FTP Server v6.2.3 for Linux, macOS, and Solaris sets insecure permissions on installation directories and configuration files. This allows local users to arbitrarily create FTP users with full privileges, and escalate privileges within the operating system by modifying system files.

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)

Wftpserver — Wing FTP Server

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2020-8635",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.2,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-03-07T00:15:13.303",
  "references": [
    {
      "url": "https://www.hooperlabs.xyz/disclosures/cve-2020-8635.php",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.hooperlabs.xyz/disclosures/cve-2020-8635.php",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-732"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Wing FTP Server v6.2.3 for Linux, macOS, and Solaris sets insecure permissions on installation directories and configuration files. This allows local users to arbitrarily create FTP users with full privileges, and escalate privileges within the operating system by modifying system files."
    },
    {
      "lang": "es",
      "value": "Wing FTP Server versión v6.2.3 para Linux, macOS y Solaris establecen permisos no seguros en la instalación de directorios y archivos de configuración. Esto permite a usuarios locales crear usuarios FTP arbitrariamente con privilegios completos y escalar privilegios dentro del sistema operativo mediante la modificación de los archivos del sistema."
    }
  ],
  "lastModified": "2026-06-17T03:26:41.263",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:wftpserver:wing_ftp_server:6.2.3:*:*:*:*:linux:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A2057B2F-6A30-4493-9E0B-E73C67470D1B"
            },
            {
              "criteria": "cpe:2.3:a:wftpserver:wing_ftp_server:6.2.3:*:*:*:*:macos:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CFBEB412-B9C5-4216-B30C-A2616DE155B7"
            },
            {
              "criteria": "cpe:2.3:a:wftpserver:wing_ftp_server:6.2.3:*:*:*:*:solaris:*:*",
              "vulnerable": true,
              "matchCriteriaId": "29A1D238-E336-4AFB-906D-691D141A1570"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}