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CVE-2011-1739

Estado: ModificadaMedia (4.3)—

The makemask function in mountd.c in mountd in FreeBSD 7.4 through 8.2 does not properly handle a -network field specifying a CIDR block with a prefix length that is not an integer multiple of 8, which allows remote attackers to bypass intended access restrictions in opportunistic circumstances via an NFS mount 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)

Freebsd — Freebsd

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2011-1739",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "secteam@freebsd.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2011-05-03T20:55:12.417",
  "references": [
    {
      "url": "http://secunia.com/advisories/44307",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secteam@freebsd.org"
    },
    {
      "url": "http://security.FreeBSD.org/advisories/FreeBSD-SA-11:01.mountd.asc",
      "source": "secteam@freebsd.org"
    },
    {
      "url": "http://securitytracker.com/id?1025425",
      "source": "secteam@freebsd.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/47517",
      "source": "secteam@freebsd.org"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2011/1076",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secteam@freebsd.org"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/66981",
      "source": "secteam@freebsd.org"
    },
    {
      "url": "http://secunia.com/advisories/44307",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://security.FreeBSD.org/advisories/FreeBSD-SA-11:01.mountd.asc",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://securitytracker.com/id?1025425",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/47517",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2011/1076",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/66981",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The makemask function in mountd.c in mountd in FreeBSD 7.4 through 8.2 does not properly handle a -network field specifying a CIDR block with a prefix length that is not an integer multiple of 8, which allows remote attackers to bypass intended access restrictions in opportunistic circumstances via an NFS mount request."
    },
    {
      "lang": "es",
      "value": "La función makemask en mountd.c en mountd en FreeBSD v7.4 a v8.2 no controla correctamente el campo de una red, la especificación de un bloque CIDR con una longitud de prefijo que no es un múltiplo entero de 8, lo que permite a atacantes remotos evitar las restricciones de acceso previsto en oportunistas circunstancias a través de un montaje de petición NFS."
    }
  ],
  "lastModified": "2026-06-16T23:29:55.970",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:7.4:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0C94B745-BD27-423D-BBB6-A821CD9BC1C4"
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:8.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3CF1F9EF-01AF-4708-AE02-765360AF3D66"
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:8.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9899C87E-2C09-46AE-BC24-1ACF012784CA"
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:8.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DD5ECA1A-D9B4-4ED7-95EC-684E7AA2B765"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secteam@freebsd.org"
}