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CVE-2009-4419

Estado: ModificadaAlta (7.2)—

Intel Q35, GM45, PM45 Express, Q45, and Q43 Express chipsets in the SINIT Authenticated Code Module (ACM), which allows local users to bypass the Trusted Execution Technology protection mechanism and gain privileges by modifying the MCHBAR register to point to an attacker-controlled region, which prevents the SENTER instruction from properly applying VT-d protection while an MLE is being loaded.

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 (5)

Intel — Gm45 ChipsetIntel — Pm45 Express ChipsetIntel — Q35 ChipsetIntel — Q43 Express ChipsetIntel — Q45 Chipset

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2009-4419",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.2,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": true,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
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      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2009-12-24T17:30:00.250",
  "references": [
    {
      "url": "http://invisiblethingslab.com/resources/misc09/Another%20TXT%20Attack.pdf",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://osvdb.org/61248",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/37900",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://security-center.intel.com/advisory.aspx?intelid=INTEL-SA-00021&languageid=en-fr",
      "tags": [
        "Vendor Advisory"
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      "source": "cve@mitre.org"
    },
    {
      "url": "http://theinvisiblethings.blogspot.com/2009/12/another-txt-attack.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/37430",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securitytracker.com/id?1023382",
      "source": "cve@mitre.org"
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    {
      "url": "http://www.vupen.com/english/advisories/2009/3618",
      "tags": [
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    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/54963",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://invisiblethingslab.com/resources/misc09/Another%20TXT%20Attack.pdf",
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    },
    {
      "url": "http://security-center.intel.com/advisory.aspx?intelid=INTEL-SA-00021&languageid=en-fr",
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    {
      "url": "http://www.securityfocus.com/bid/37430",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
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      "url": "http://www.vupen.com/english/advisories/2009/3618",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/54963",
      "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": "Intel Q35, GM45, PM45 Express, Q45, and Q43 Express chipsets in the SINIT Authenticated Code Module (ACM), which allows local users to bypass the Trusted Execution Technology protection mechanism and gain privileges by modifying the MCHBAR register to point to an attacker-controlled region, which prevents the SENTER instruction from properly applying VT-d protection while an MLE is being loaded."
    },
    {
      "lang": "es",
      "value": "Intel Q35, GM45, PM45 Express, Q45, Y Q43 Express chipsets en the SINIT Authenticated Code Module (ACM), permite a usuarios locales superar el mecanismo de Trusted Execution Technology y obtener privilegios por modificación del registro MCHBAR para que apunte a una región controlada por el atacantes, lo que impide a la instrucción SENTER la adecuada protección desde applying VT-d, mientras un MLE es cargado."
    }
  ],
  "lastModified": "2026-06-16T23:13:37.970",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
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  "sourceIdentifier": "cve@mitre.org"
}