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CVE-2017-8810

Estado: ModificadaAlta (7.5)—

MediaWiki en versiones anteriores a la 1.27.4; las versiones 1.28.x anteriores a la 1.28.3 y las versiones 1.29.x anteriores a la 1.29.2, cuando se ha configurado una wiki privada, proporciona diferentes mensajes de error para intentos de inicio de sesión fallidos dependiendo de si existe el nombre de usuario. Esto permite que atacantes remotos enumeren nombres de cuentas y lleven a cabo ataques de fuerza bruta mediante una serie de peticiones.

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 (2)

Debian — Debian LinuxMediawiki — Mediawiki

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2017-8810",
  "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": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security@debian.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2",
          "versions": [
            {
              "status": "affected",
              "version": "MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2"
            }
          ]
        }
      ]
    }
  ],
  "published": "2017-11-15T08:29:00.673",
  "references": [
    {
      "url": "http://www.securitytracker.com/id/1039812",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "https://lists.wikimedia.org/pipermail/mediawiki-announce/2017-November/000216.html",
      "tags": [
        "Mailing List",
        "Patch",
        "Vendor Advisory"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "https://www.debian.org/security/2017/dsa-4036",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "http://www.securitytracker.com/id/1039812",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.wikimedia.org/pipermail/mediawiki-announce/2017-November/000216.html",
      "tags": [
        "Mailing List",
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.debian.org/security/2017/dsa-4036",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2, when a private wiki is configured, provides different error messages for failed login attempts depending on whether the username exists, which allows remote attackers to enumerate account names and conduct brute-force attacks via a series of requests."
    },
    {
      "lang": "es",
      "value": "MediaWiki en versiones anteriores a la 1.27.4; las versiones 1.28.x anteriores a la 1.28.3 y las versiones 1.29.x anteriores a la 1.29.2, cuando se ha configurado una wiki privada, proporciona diferentes mensajes de error para intentos de inicio de sesión fallidos dependiendo de si existe el nombre de usuario. Esto permite que atacantes remotos enumeren nombres de cuentas y lleven a cabo ataques de fuerza bruta mediante una serie de peticiones."
    }
  ],
  "lastModified": "2026-06-17T01:27:00.163",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2825F885-DD77-4822-B659-D5AFB56C6B17",
              "versionEndIncluding": "1.27.3"
            },
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:1.28.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "70CAB8A9-39D5-41F4-800C-79E4FE57B12D"
            },
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:1.28.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A060BA59-05C8-4646-97D7-4F382B4EBCC6"
            },
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:1.28.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E67B837B-D085-4EE4-9556-D25BFA9BC108"
            },
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:1.29.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CFA5659C-9DEA-494E-BB32-E6573E180C26"
            },
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:1.29.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9A457BE6-9F2F-45C9-A650-46F7E4B77E20"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@debian.org"
}