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CVE-2018-11567

Estado: ModificadaBaja (3.3)—

Prior to 2018-04-27, the reprompt feature in Amazon Echo devices could be misused by a custom Alexa skill. The reprompt feature is designed so that if Alexa does not receive an input within 8 seconds, the device can speak a reprompt, then wait an additional 8 seconds for input; if the user still does not respond, the microphone is then turned off. The vulnerability involves empty output-speech reprompts, custom wildcard ("gibberish") input slots, and logging of detected speech.

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If a maliciously designed skill is installed, an attacker could obtain transcripts of speech not intended for Alexa to process, but simply spoken within the device's hearing range. NOTE: The vendor states "Customer trust is important to us and we take security and privacy seriously. We have put mitigations in place for detecting this type of skill behavior and reject or suppress those skills when we do. Customers do not need to take any action for these mitigations to work.

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 (5)

Amazon — Echo DOT FirmwareAmazon — Echo FirmwareAmazon — Echo Plus FirmwareAmazon — Echo Show FirmwareAmazon — Echo Spot Firmware

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2018-11567",
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        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
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        "acInsufInfo": false,
        "impactScore": 2.9,
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        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
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          "baseSeverity": "LOW",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
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  "published": "2018-05-30T22:29:00.243",
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      "description": [
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          "value": "CWE-384"
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      "lang": "en",
      "value": "Prior to 2018-04-27, the reprompt feature in Amazon Echo devices could be misused by a custom Alexa skill. The reprompt feature is designed so that if Alexa does not receive an input within 8 seconds, the device can speak a reprompt, then wait an additional 8 seconds for input; if the user still does not respond, the microphone is then turned off. The vulnerability involves empty output-speech reprompts, custom wildcard (\"gibberish\") input slots, and logging of detected speech. If a maliciously designed skill is installed, an attacker could obtain transcripts of speech not intended for Alexa to process, but simply spoken within the device's hearing range. NOTE: The vendor states \"Customer trust is important to us and we take security and privacy seriously. We have put mitigations in place for detecting this type of skill behavior and reject or suppress those skills when we do. Customers do not need to take any action for these mitigations to work."
    },
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      "lang": "es",
      "value": "** EN DISPUTA ** Antes del 27 de abril de 2018, la función reprompt en los dispositivos de Amazon Echo podía ser utilizada de manera incorrecta por una habilidad personalizada de Alexa. La función reprompt está diseñada para que si Alexa no recibe una entrada en 8 segundos, el dispositivo pueda decir un \"reprompt\" y luego esperar 8 segundos adicionales por la entrada; si el usuario sigue sin responder, el micrófono se apaga. La vulnerabilidad incluye reprompts de voz de salida vacía, ranuras de entrada de wildcards personalizados (\"gibberish\") y registro del habla detectada. Si se instala una habilidad maliciosamente diseñada, un atacante podría obtener transcripciones del habla no destinadas a ser procesadas por Alexa, pero que simplemente se digan dentro del rango auditivo del dispositivo. NOTA: El fabricante afirma: \"La confianza del cliente es importante para nosotros y nos tomamos en serio la seguridad y la privacidad. Hemos implementado mitigaciones para detectar este tipo de comportamiento de habilidades y rechazar o suprimir esas habilidades cuando lo hacemos. Los clientes no necesitan tomar ninguna acción para que estas mitigaciones funcionen\"."
    }
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  "lastModified": "2026-06-17T01:36:11.070",
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