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CVE-2012-3440

Estado: ModificadaMedia (5.6)—

A certain Red Hat script for sudo 1.7.2 on Red Hat Enterprise Linux (RHEL) 5 allows local users to overwrite arbitrary files via a symlink attack on the /var/tmp/nsswitch.conf.bak temporary file.

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 (2)

Redhat — Enterprise LinuxTodd Miller — Sudo

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2012-3440",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5.6,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:H/Au:N/C:N/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "HIGH",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 9.2,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 1.9,
        "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": "2012-08-08T10:26:19.220",
  "references": [
    {
      "url": "http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/54868",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=844442",
      "tags": [
        "Exploit"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/54868",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=844442",
      "tags": [
        "Exploit"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-59"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A certain Red Hat script for sudo 1.7.2 on Red Hat Enterprise Linux (RHEL) 5 allows local users to overwrite arbitrary files via a symlink attack on the /var/tmp/nsswitch.conf.bak temporary file."
    },
    {
      "lang": "es",
      "value": "Una secuencia de comandos seguro de Red Hat para sudo v1.7.2 sobre Red Hat Enterprise Linux (RHEL) v5 permite a usuarios locales sobreescribir ficheros arbitrarios mediante un ataque de enlace simbólico en el directorio temporal /var/tmp/nsswitch.conf.bak"
    }
  ],
  "lastModified": "2026-06-16T23:43:13.657",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:todd_miller:sudo:1.7.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5C0D8CB9-3156-4F7F-A616-59EF530540D2"
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux:5:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AA9B3CC0-DF1C-4A86-B2A3-A9D428A5A6E6"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "evaluatorComment": "Additional information: https://rhn.redhat.com/errata/RHSA-2012-1149.html",
  "sourceIdentifier": "secalert@redhat.com"
}