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CVE-2008-3893

Estado: ModificadaMedia (5.5)—

Microsoft Bitlocker en Windows Vista versiones anteriores a SP1 almacena contraseñas de autenticación de pre-arranque en el búfer BIOS Keyboard y no limpia este búfer durante el arranque, lo cual permite a usuarios locales obtener información sensible leyendo direcciones de memoria física asociadas con este búfer.

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)

Microsoft — Windows Vista

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2008-3893",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2008-3893",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-04-03T13:34:47.480334Z"
        }
      }
    ],
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 1.9,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:M/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.4,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2008-09-03T14:12:00.000",
  "references": [
    {
      "url": "http://secunia.com/advisories/31619",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.ivizsecurity.com/security-advisory-iviz-sr-0801.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/31619",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.ivizsecurity.com/security-advisory-iviz-sr-0801.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Microsoft Bitlocker in Windows Vista before SP1 stores pre-boot authentication passwords in the BIOS Keyboard buffer and does not clear this buffer during boot, which allows local users to obtain sensitive information by reading the physical memory locations associated with this buffer."
    },
    {
      "lang": "es",
      "value": "Microsoft Bitlocker en Windows Vista versiones anteriores a SP1 almacena contraseñas de autenticación de pre-arranque en el búfer BIOS Keyboard y no limpia este búfer durante el arranque, lo cual permite a usuarios locales obtener información sensible leyendo direcciones de memoria física asociadas con este búfer."
    }
  ],
  "lastModified": "2026-06-16T22:56:45.370",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:microsoft:windows_vista:*:*:enterprise:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8FF0D88B-821D-4E45-A2EC-5279B9190356"
            },
            {
              "criteria": "cpe:2.3:o:microsoft:windows_vista:*:*:ultimate:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F0257B7A-A8D1-4AC9-98C8-324B5B810877"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "evaluatorSolution": "Upgrade to Vista Service Pack 1"
}