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CVE-2009-2904

Estado: ModificadaMedia (6.9)—

A certain Red Hat modification to the ChrootDirectory feature in OpenSSH 4.8, as used in sshd in OpenSSH 4.3 in Red Hat Enterprise Linux (RHEL) 5.4 and Fedora 11, allows local users to gain privileges via hard links to setuid programs that use configuration files within the chroot directory, related to requirements for directory ownership.

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)

Openbsd — Openssh

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2009-2904",
  "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": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2009-10-01T15:30:00.233",
  "references": [
    {
      "url": "http://lists.fedoraproject.org/pipermail/package-announce/2010-March/038214.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://lists.vmware.com/pipermail/security-announce/2010/000082.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://osvdb.org/58495",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/38794",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/38834",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/39182",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/36552",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2010/0528",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=522141",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9862",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://rhn.redhat.com/errata/RHSA-2009-1470.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://lists.fedoraproject.org/pipermail/package-announce/2010-March/038214.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://lists.vmware.com/pipermail/security-announce/2010/000082.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://osvdb.org/58495",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/38794",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/38834",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/39182",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/36552",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2010/0528",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=522141",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9862",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://rhn.redhat.com/errata/RHSA-2009-1470.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-16"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A certain Red Hat modification to the ChrootDirectory feature in OpenSSH 4.8, as used in sshd in OpenSSH 4.3 in Red Hat Enterprise Linux (RHEL) 5.4 and Fedora 11, allows local users to gain privileges via hard links to setuid programs that use configuration files within the chroot directory, related to requirements for directory ownership."
    },
    {
      "lang": "es",
      "value": "Ciertas modificaciones Ret Hat en ChrootDirectory feature en OpenSSH v4.8, como el usado en sshd en OpenSSH v4.3 en Red Hat Enterprise Linux (RHEL) v5.4 y Fedora v11, permite a usuarios locales obtener privilegios a través de enlaces fuertes en programas setuid que usa una configuración de ficheros con el chroot directory, relacionado con requerimientos para el propietario."
    }
  ],
  "lastModified": "2026-06-16T23:10:28.297",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:openbsd:openssh:4.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7910598E-BEC1-4644-9DE4-D8BE505A4F9E"
            },
            {
              "criteria": "cpe:2.3:a:openbsd:openssh:4.8:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "40B1B209-53B8-48DC-AFFC-BD69D5978A0B"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:11:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "B3BB5EDB-520B-4DEF-B06E-65CA13152824"
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux:5:*:server:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "5833A489-D6DE-4D51-9E74-189CBC2E28CA"
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_desktop:5:*:client:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "AF3FB21C-AC0E-4F6C-B68A-9405E57ADCF0"
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_eus:5:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "443CB3FD-014D-4C37-BB02-03DAA5A3F3C1"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com"
}