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CVE-2011-3628

Estado: ModificadaMedia (6.9)—

Untrusted search path vulnerability in pam_motd (aka the MOTD module) in libpam-modules before 1.1.3-2ubuntu2.1 on Ubuntu 11.10, before 1.1.2-2ubuntu8.4 on Ubuntu 11.04, before 1.1.1-4ubuntu2.4 on Ubuntu 10.10, before 1.1.1-2ubuntu5.4 on Ubuntu 10.04 LTS, and before 0.99.7.1-5ubuntu6.5 on Ubuntu 8.04 LTS, when using certain configurations such as "session optional pam_motd.so", allows local users to gain privileges by modifying the PATH environment variable to reference a malicious command, as demonstrated via uname.

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)

Canonical — Libpam-modulesCanonical — Ubuntu Linux

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2011-3628",
  "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": "2014-04-15T23:55:07.297",
  "references": [
    {
      "url": "http://www.ubuntu.com/usn/USN-1237-1",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugs.launchpad.net/ubuntu/%2Bsource/pam/%2Bbug/610125",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.ubuntu.com/usn/USN-1237-1",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugs.launchpad.net/ubuntu/%2Bsource/pam/%2Bbug/610125",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Untrusted search path vulnerability in pam_motd (aka the MOTD module) in libpam-modules before 1.1.3-2ubuntu2.1 on Ubuntu 11.10, before 1.1.2-2ubuntu8.4 on Ubuntu 11.04, before 1.1.1-4ubuntu2.4 on Ubuntu 10.10, before 1.1.1-2ubuntu5.4 on Ubuntu 10.04 LTS, and before 0.99.7.1-5ubuntu6.5 on Ubuntu 8.04 LTS, when using certain configurations such as \"session optional pam_motd.so\", allows local users to gain privileges by modifying the PATH environment variable to reference a malicious command, as demonstrated via uname."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de búsqueda de ruta no confiable en pam_motd (también conocido como el modulo MOTD) en libpam-modules anterior a 1.1.3-2ubuntu2.1 en Ubuntu 11.10, anterior a 1.1.2-2ubuntu8.4 en Ubuntu 11.04, anterior a 1.1.1-4ubuntu2.4 en Ubuntu 10.10, anterior a 1.1.1-2ubuntu5.4 en Ubuntu 10.04 LTS, y anterior a 0.99.7.1-5ubuntu6.5 en Ubuntu 8.04 LTS, cuando se usan ciertas configuraciones tales como \"sesiones opcionales en pam_motd.so\", permite a usuarios locales ganar privilegios mediante la modificación de la variable de entorno PATH para referenciar comandos maliciosos, como se demostró a través de uname."
    }
  ],
  "lastModified": "2026-06-16T23:33:39.273",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:canonical:libpam-modules:0.9.7:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6A9D1AEE-4A49-4597-874C-17B7594979CF"
            },
            {
              "criteria": "cpe:2.3:a:canonical:libpam-modules:1.1.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3E5D71CF-88D6-42CC-85DD-60FC1EBF070A"
            },
            {
              "criteria": "cpe:2.3:a:canonical:libpam-modules:1.1.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D5BCE095-762D-4EDB-8D59-8220A77D3C1B"
            },
            {
              "criteria": "cpe:2.3:a:canonical:libpam-modules:1.1.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "21685E73-4374-4176-9EE8-290E4814C922"
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:8.04:-:lts:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D6DFE2D3-46E2-4D0C-8508-30307D654560"
            },
            {
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              "vulnerable": true,
              "matchCriteriaId": "7118F616-25CA-4E34-AA13-4D14BB62419F"
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:10.10:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "87614B58-24AB-49FB-9C84-E8DDBA16353B"
            },
            {
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              "vulnerable": true,
              "matchCriteriaId": "EF49D26F-142E-468B-87C1-BABEA445255C"
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:11.10:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E4174F4F-149E-41A6-BBCC-D01114C05F38"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "evaluatorComment": "Per: http://cwe.mitre.org/data/definitions/426.html\n\n\"CWE-426: Untrusted Search Path\"",
  "sourceIdentifier": "secalert@redhat.com"
}