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CVE-2023-45234

Estado: ModificadaAlta (8.8)—

EDK2's Network Package is susceptible to a buffer overflow vulnerability when processing DNS Servers option from a DHCPv6 Advertise message. This vulnerability can be exploited by an attacker to gain unauthorized access and potentially lead to a loss of Confidentiality, Integrity and/or Availability.

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)

Tianocore — Edk2

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2023-45234",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-45234",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-06-17T20:09:26.371967Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
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        "cvssData": {
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          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.5,
        "exploitabilityScore": 2.8
      },
      {
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        "source": "nvd@nist.gov",
        "cvssData": {
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          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
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      }
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    {
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      "affectedData": [
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          "vendor": "TianoCore",
          "product": "edk2",
          "versions": [
            {
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              "version": "edk2-stable202308"
            }
          ],
          "defaultStatus": "unaffected"
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  "published": "2024-01-16T16:15:12.460",
  "references": [
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      "tags": [
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      "source": "infosec@edk2.groups.io"
    },
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      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SJ42V7O7F4OU6R7QSQQECLB6LDHKZIMQ/",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SJ42V7O7F4OU6R7QSQQECLB6LDHKZIMQ/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.kb.cert.org/vuls/id/132380",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "infosec@edk2.groups.io",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ]
    },
    {
      "type": "Primary",
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      "description": [
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          "value": "CWE-119"
        }
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    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "EDK2's Network Package is susceptible to a buffer overflow vulnerability when processing DNS Servers option from a DHCPv6 Advertise message. This\n vulnerability can be exploited by an attacker to gain unauthorized \naccess and potentially lead to a loss of Confidentiality, Integrity and/or Availability."
    },
    {
      "lang": "es",
      "value": "EDK2's Network Package es susceptible a una vulnerabilidad de desbordamiento de búfer al procesar la opción de servidores DNS desde un mensaje de publicidad DHCPv6. Un atacante puede aprovechar esta vulnerabilidad para obtener acceso no autorizado y potencialmente provocar una pérdida de confidencialidad, integridad y/o disponibilidad."
    }
  ],
  "lastModified": "2026-06-17T06:28:30.170",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:tianocore:edk2:*:*:*:*:*:*:*:*",
              "vulnerable": true,
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              "versionEndIncluding": "202311"
            }
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          "operator": "OR"
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      ]
    }
  ],
  "sourceIdentifier": "infosec@edk2.groups.io"
}