nvd-json-data-feeds/CVE-2021/CVE-2021-273xx/CVE-2021-27379.json

{
  "id": "CVE-2021-27379",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2021-02-18T17:15:15.867",
  "lastModified": "2022-05-27T17:09:48.977",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in Xen through 4.11.x, allowing x86 Intel HVM guest OS users to achieve unintended read/write DMA access, and possibly cause a denial of service (host OS crash) or gain privileges. This occurs because a backport missed a flush, and thus IOMMU updates were not always correct. NOTE: this issue exists because of an incomplete fix for CVE-2020-15565."
    },
    {
      "lang": "es",
      "value": "Se detect\u00f3 un problema en Xen versiones hasta 4.11.x, permitiendo a usuarios del Sistema Operativo invitado x86 Intel HVM obtener acceso DMA de lectura y escritura no previsto y posiblemente causar una denegaci\u00f3n de servicio (bloqueo del Sistema Operativo host) o alcanzar privilegios. Esto ocurre porque un backport no se descarg\u00f3 y, por lo tanto, las actualizaciones de IOMMU no siempre fueron correctas. NOTA: este problema se presenta debido a una correcci\u00f3n incompleta para CVE-2020-15565"
    }
  ],
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        "type": "Primary",
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH"
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        "exploitabilityScore": 1.8,
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          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "COMPLETE",
          "baseScore": 5.9
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 3.4,
        "impactScore": 8.5,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
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      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
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          "lang": "en",
          "value": "NVD-CWE-Other"
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  "references": [
    {
      "url": "http://www.openwall.com/lists/oss-security/2021/02/23/1",
      "source": "cve@mitre.org",
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        "Mailing List",
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