nvd-json-data-feeds/CVE-2021/CVE-2021-40xx/CVE-2021-4093.json

{
  "id": "CVE-2021-4093",
  "sourceIdentifier": "secalert@redhat.com",
  "published": "2022-02-18T18:15:10.363",
  "lastModified": "2023-11-07T03:40:10.397",
  "vulnStatus": "Modified",
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in the KVM's AMD code for supporting the Secure Encrypted Virtualization-Encrypted State (SEV-ES). A KVM guest using SEV-ES can trigger out-of-bounds reads and writes in the host kernel via a malicious VMGEXIT for a string I/O instruction (for example, outs or ins) using the exit reason SVM_EXIT_IOIO. This issue results in a crash of the entire system or a potential guest-to-host escape scenario."
    },
    {
      "lang": "es",
      "value": "Se ha encontrado un fallo en el c\u00f3digo de AMD de KVM para soportar la Virtualizaci\u00f3n Segura Encriptada-Estado Encriptado (SEV-ES). Un hu\u00e9sped de KVM que use SEV-ES puede desencadenar lecturas y escrituras fuera de l\u00edmites en el n\u00facleo anfitri\u00f3n por medio de un VMGEXIT malicioso para una instrucci\u00f3n de E/S de cadena (por ejemplo, outs o ins) usando el motivo de salida SVM_EXIT_IOIO. Este problema resulta en un bloqueo de todo el sistema o en un potencial escenario de escape del hu\u00e9sped al host"
    }
  ],
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          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH"
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        "exploitabilityScore": 2.0,
        "impactScore": 6.0
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          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
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          "baseScore": 7.2
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        "baseSeverity": "HIGH",
        "exploitabilityScore": 3.9,
        "impactScore": 10.0,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
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        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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      "type": "Primary",
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          "value": "CWE-125"
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      "source": "secalert@redhat.com",
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      "url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=2222",
      "source": "secalert@redhat.com",
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