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CVE-2023-4135

Estado: ModificadaMedia (6.5)—

A heap out-of-bounds memory read flaw was found in the virtual nvme device in QEMU. The QEMU process does not validate an offset provided by the guest before computing a host heap pointer, which is used for copying data back to the guest. Arbitrary heap memory relative to an allocated buffer can be disclosed.

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)

Fedoraproject — FedoraQemu — Qemu

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2023-4135",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
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        "type": "Secondary",
        "source": "secalert@redhat.com",
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          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 6,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 4,
        "exploitabilityScore": 1.5
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
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          "baseScore": 6.5,
          "attackVector": "LOCAL",
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 4,
        "exploitabilityScore": 2
      }
    ]
  },
  "affected": [
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      "affectedData": [
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          "vendor": "n/a",
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          "versions": [
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          "product": "Red Hat Enterprise Linux 7",
          "packageName": "qemu-kvm-ma",
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          "defaultStatus": "unaffected"
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          "packageName": "virt:rhel/qemu-kvm",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:advanced_virtualization:8::el8"
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          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 8 Advanced Virtualization",
          "packageName": "virt:av/qemu-kvm",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
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          "product": "Red Hat Enterprise Linux 9",
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          "product": "Fedora",
          "packageName": "qemu",
          "collectionURL": "https://packages.fedoraproject.org/",
          "defaultStatus": "affected"
        },
        {
          "vendor": "Fedora",
          "product": "Extra Packages for Enterprise Linux",
          "packageName": "qemu",
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          "defaultStatus": "unaffected"
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      ]
    }
  ],
  "published": "2023-08-04T14:15:12.173",
  "references": [
    {
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      "tags": [
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      ],
      "source": "secalert@redhat.com"
    },
    {
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      "tags": [
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        "Patch",
        "Third Party Advisory"
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    },
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    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2229101",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Third Party Advisory"
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    },
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    },
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      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secalert@redhat.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
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      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A heap out-of-bounds memory read flaw was found in the virtual nvme device in QEMU. The QEMU process does not validate an offset provided by the guest before computing a host heap pointer, which is used for copying data back to the guest. Arbitrary heap memory relative to an allocated buffer can be disclosed."
    },
    {
      "lang": "es",
      "value": "Se encontró una falla de lectura de memoria fuera de los límites en el dispositivo nvme virtual en QEMU. El proceso QEMU no valida un desplazamiento proporcionado por el invitado antes de calcular un puntero de la memoria del host, que se utiliza para copiar datos al invitado. Se puede revelar memoria arbitraria en relación con un búfer asignado."
    }
  ],
  "lastModified": "2026-06-17T06:37:09.470",
  "configurations": [
    {
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}