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CVE-2013-4851

Estado: ModificadaMedia (6.4)—

The vfs_hang_addrlist function in sys/kern/vfs_export.c in the NFS server implementation in the kernel in FreeBSD 8.3 and 9.x through 9.1-RELEASE-p5 controls authorization for host/subnet export entries on the basis of group information sent by the client, which allows remote attackers to bypass file permissions on NFS filesystems via crafted requests.

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)

Freebsd — Freebsd

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2013-4851",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 4.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2013-07-29T13:59:56.933",
  "references": [
    {
      "url": "http://svnweb.freebsd.org/base?view=revision&revision=244226",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.freebsd.org/security/advisories/FreeBSD-SA-13:08.nfsserver.asc",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/61484",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://svnweb.freebsd.org/base?view=revision&revision=244226",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.freebsd.org/security/advisories/FreeBSD-SA-13:08.nfsserver.asc",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/61484",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-264"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The vfs_hang_addrlist function in sys/kern/vfs_export.c in the NFS server implementation in the kernel in FreeBSD 8.3 and 9.x through 9.1-RELEASE-p5 controls authorization for host/subnet export entries on the basis of group information sent by the client, which allows remote attackers to bypass file permissions on NFS filesystems via crafted requests."
    },
    {
      "lang": "es",
      "value": "La función vfs_hang_addrlist en sys/kern/vfs_export.c en la implementación del servidor NFS en el kernel de FreeBSD 8.3 y 9.x a la 9.1-RELEASE-p5 controla la autorización para exportar las entradas host/subnet en las bases del grupo de información enviado por el cliente, lo que permite a atacantes remotos evitar los permisos de ficheros en los sistemas NFS a través de peticiones manipuladas."
    }
  ],
  "lastModified": "2026-06-16T23:57:59.923",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:8.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "30C501A1-FE2D-41E7-A5DB-C61D8701B9B4"
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:9.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E6BD5BFF-260A-4A9E-B0AA-C8B8386B154E"
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:9.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D78E559A-430D-4D50-8A83-58A37D393471"
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:9.1:p4:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DD6B2A2E-6E8C-40D7-B29F-1FC9E8B1076B"
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:9.1:p5:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0ADB3AF3-5E13-4EC3-AE3C-128DF51E1DF9"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}