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CVE-2010-2020

Estado: ModificadaMedia (6.9)—💥 Exploit

sys/nfsclient/nfs_vfsops.c in the NFS client in the kernel in FreeBSD 7.2 through 8.1-PRERELEASE, when vfs.usermount is enabled, does not validate the length of a certain fhsize parameter, which allows local users to gain privileges via a crafted 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).

💥 Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

Tecnologías afectadas (1)

Freebsd — Freebsd

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2010-2020",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.9,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.4,
        "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": "2010-05-28T18:30:01.550",
  "references": [
    {
      "url": "http://security.FreeBSD.org/advisories/FreeBSD-SA-10:06.nfsclient.asc",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secteam@freebsd.org"
    },
    {
      "url": "http://securitytracker.com/id?1024039",
      "source": "secteam@freebsd.org"
    },
    {
      "url": "http://www.exploit-db.com/exploits/14002",
      "source": "secteam@freebsd.org"
    },
    {
      "url": "http://www.exploit-db.com/exploits/14003",
      "source": "secteam@freebsd.org"
    },
    {
      "url": "http://security.FreeBSD.org/advisories/FreeBSD-SA-10:06.nfsclient.asc",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://securitytracker.com/id?1024039",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.exploit-db.com/exploits/14002",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.exploit-db.com/exploits/14003",
      "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": "sys/nfsclient/nfs_vfsops.c in the NFS client in the kernel in FreeBSD 7.2 through 8.1-PRERELEASE, when vfs.usermount is enabled, does not validate the length of a certain fhsize parameter, which allows local users to gain privileges via a crafted mount request."
    },
    {
      "lang": "es",
      "value": "sys/nfsclient/nfs_vfsops.c en el cliente NFS en el kernel en FreeBSD v7.2 hasta v8.1-PRERELEASE, cuando vfs.usermount está habilitado no valida la longitud de ciertos parámetros fhsize, lo que permite a usuarios locales obtener privilegios a través de una petición mount manipulada."
    }
  ],
  "lastModified": "2026-06-16T23:19:49.720",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:7.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F948527C-A01E-4315-80B6-47FACE18A34F"
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:7.2:pre-release:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8B573401-DC6F-4AFE-92F5-D96F785D2107"
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:7.2:stable:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "60D40129-108B-421B-9990-6C6F381C96AD"
            },
            {
              "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-prerelease:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B525B32B-417E-49C8-9847-A9F807FA67B0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secteam@freebsd.org"
}