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CVE-2017-7995

Estado: ModificadaBaja (3.8)—

Xen PV guest before Xen 4.3 checked access permissions to MMIO ranges only after accessing them, allowing host PCI device space memory reads, leading to information disclosure. This is an error in the get_user function. NOTE: the upstream Xen Project considers versions before 4.5.x to be EOL.

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 (6)

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2017-7995",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
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        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 1.7,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:S/C:P/I:N/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
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        "acInsufInfo": true,
        "impactScore": 2.9,
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        "obtainAllPrivilege": false,
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          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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          "confidentialityImpact": "LOW"
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  "affected": [
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      "affectedData": [
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  "published": "2017-05-03T19:59:00.143",
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      "source": "cve@mitre.org"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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          "value": "CWE-200"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Xen PV guest before Xen 4.3 checked access permissions to MMIO ranges only after accessing them, allowing host PCI device space memory reads, leading to information disclosure. This is an error in the get_user function. NOTE: the upstream Xen Project considers versions before 4.5.x to be EOL."
    },
    {
      "lang": "es",
      "value": "Xen PV guest anterior a Xen 4.3 chequea los permisos de acceso a los rangos MMIO sólo después de acceder a ellos, lo que permite leer en un dispositivo de memoria PCI, dando lugar a la divulgación de información. Se trata de un error en la función get_user. NOTA: el upstream Xen Project considera versiones anteriores a 4.5.x para ser EOL."
    }
  ],
  "lastModified": "2026-06-17T01:25:36.870",
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