FKIE_CVE-2013-2171

Vulnerability from fkie_nvd - Published: 2013-07-02 03:43 - Updated: 2026-06-16 23:52
Severity
Summary
The vm_map_lookup function in sys/vm/vm_map.c in the mmap implementation in the kernel in FreeBSD 9.0 through 9.1-RELEASE-p4 does not properly determine whether a task should have write access to a memory location, which allows local users to bypass filesystem write permissions and consequently gain privileges via a crafted application that leverages read permissions, and makes mmap and ptrace system calls.
References
secalert@redhat.comhttp://svnweb.freebsd.org/base?view=revision&revision=251901
secalert@redhat.comhttp://www.debian.org/security/2013/dsa-2714
secalert@redhat.comhttp://www.freebsd.org/security/advisories/FreeBSD-SA-13:06.mmap.ascVendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://svnweb.freebsd.org/base?view=revision&revision=251901
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2013/dsa-2714
af854a3a-2127-422b-91ae-364da2661108http://www.freebsd.org/security/advisories/FreeBSD-SA-13:06.mmap.ascVendor Advisory
Impacted products
Vendor Product Version
freebsd freebsd 9.0
freebsd freebsd 9.1
freebsd freebsd 9.1
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:9.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "E6BD5BFF-260A-4A9E-B0AA-C8B8386B154E",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:9.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "D78E559A-430D-4D50-8A83-58A37D393471",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:9.1:p4:*:*:*:*:*:*",
              "matchCriteriaId": "DD6B2A2E-6E8C-40D7-B29F-1FC9E8B1076B",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The vm_map_lookup function in sys/vm/vm_map.c in the mmap implementation in the kernel in FreeBSD 9.0 through 9.1-RELEASE-p4 does not properly determine whether a task should have write access to a memory location, which allows local users to bypass filesystem write permissions and consequently gain privileges via a crafted application that leverages read permissions, and makes mmap and ptrace system calls."
    },
    {
      "lang": "es",
      "value": "La funci\u00f3n vm_map_lookup en sys/vm/vm_map.c \r\nen la ejecuci\u00f3n de \"mmap\" en el kernel en FreeBSD v9.0 hasta v9.1-RELEASE-p4 no determina correctamente si una tarea debe tener acceso de escritura a una posici\u00f3n de memoria, que permite a los usuarios locales saltarse permisos de escritura del sistema de archivos y por lo tanto obtener privilegios a trav\u00e9s de una aplicaci\u00f3n manipulada que aprovecha permisos de lectura, y que hace llamadas al sistema \"mmap\" y \"ptrace\"."
    }
  ],
  "id": "CVE-2013-2171",
  "lastModified": "2026-06-16T23:52:52.770",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 6.9,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 3.4,
        "impactScore": 10.0,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ]
  },
  "published": "2013-07-02T03:43:33.647",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "http://svnweb.freebsd.org/base?view=revision\u0026revision=251901"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://www.debian.org/security/2013/dsa-2714"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://www.freebsd.org/security/advisories/FreeBSD-SA-13:06.mmap.asc"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://svnweb.freebsd.org/base?view=revision\u0026revision=251901"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.debian.org/security/2013/dsa-2714"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://www.freebsd.org/security/advisories/FreeBSD-SA-13:06.mmap.asc"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-264"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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