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CVE-2020-11933

Estado: ModificadaMedia (6.8)—

cloud-init as managed by snapd on Ubuntu Core 16 and Ubuntu Core 18 devices was run without restrictions on every boot, which a physical attacker could exploit by crafting cloud-init user-data/meta-data via external media to perform arbitrary changes on the device to bypass intended security mechanisms such as full disk encryption. This issue did not affect traditional Ubuntu systems. Fixed in snapd version 2.45.2, revision 8539 and core version 2.45.2, revision 9659.

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)

Canonical — SnapdCanonical — Ubuntu Linux

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2020-11933",
  "cveTags": [],
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        "source": "nvd@nist.gov",
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          "version": "2.0",
          "baseScore": 4.6,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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        "cvssData": {
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          "version": "3.1",
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          "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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  "affected": [
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          "product": "snapd",
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  "published": "2020-07-29T17:15:12.857",
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      "tags": [
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "value": "CWE-264"
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    {
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      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "NVD-CWE-Other"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "cloud-init as managed by snapd on Ubuntu Core 16 and Ubuntu Core 18 devices was run without restrictions on every boot, which a physical attacker could exploit by crafting cloud-init user-data/meta-data via external media to perform arbitrary changes on the device to bypass intended security mechanisms such as full disk encryption. This issue did not affect traditional Ubuntu systems. Fixed in snapd version 2.45.2, revision 8539 and core version 2.45.2, revision 9659."
    },
    {
      "lang": "es",
      "value": "cloud-init administrado por snapd en los dispositivos Ubuntu Core 16 y Ubuntu Core 18, se ejecutó sin restricciones en cada arranque, que un atacante físico podría explotar mediante el diseño de user-data/meta-data de cloud-init por medio de medios externos para llevar a cabo cambios arbitrarios en el dispositivo para omitir los mecanismos de seguridad previstos, como el cifrado de disco completo. Este problema no afectó a los sistemas tradicionales de Ubuntu. Se corrigió en snapd versión 2.45.2, revisión 8539 y core versión 2.45.2, revisión 9659"
    }
  ],
  "lastModified": "2026-06-17T02:51:05.030",
  "configurations": [
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