// For flags

CVE-2018-11567

 

Severity Score

3.3
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

** 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".

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2018-05-30 CVE Reserved
  • 2018-05-30 CVE Published
  • 2023-05-24 EPSS Updated
  • 2024-08-05 CVE Updated
  • 2024-08-05 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-384: Session Fixation
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Amazon
Search vendor "Amazon"
Echo Show Firmware
Search vendor "Amazon" for product "Echo Show Firmware"
< 2018-04-27
Search vendor "Amazon" for product "Echo Show Firmware" and version " < 2018-04-27"
-
Affected
in Amazon
Search vendor "Amazon"
Echo Show
Search vendor "Amazon" for product "Echo Show"
--
Safe
Amazon
Search vendor "Amazon"
Echo Plus Firmware
Search vendor "Amazon" for product "Echo Plus Firmware"
< 2018-04-27
Search vendor "Amazon" for product "Echo Plus Firmware" and version " < 2018-04-27"
-
Affected
in Amazon
Search vendor "Amazon"
Echo Plus
Search vendor "Amazon" for product "Echo Plus"
--
Safe
Amazon
Search vendor "Amazon"
Echo Dot Firmware
Search vendor "Amazon" for product "Echo Dot Firmware"
< 2018-04-27
Search vendor "Amazon" for product "Echo Dot Firmware" and version " < 2018-04-27"
-
Affected
in Amazon
Search vendor "Amazon"
Echo Dot
Search vendor "Amazon" for product "Echo Dot"
--
Safe
Amazon
Search vendor "Amazon"
Echo Spot Firmware
Search vendor "Amazon" for product "Echo Spot Firmware"
< 2018-04-27
Search vendor "Amazon" for product "Echo Spot Firmware" and version " < 2018-04-27"
-
Affected
in Amazon
Search vendor "Amazon"
Echo Spot
Search vendor "Amazon" for product "Echo Spot"
--
Safe
Amazon
Search vendor "Amazon"
Echo Firmware
Search vendor "Amazon" for product "Echo Firmware"
< 2018-04-27
Search vendor "Amazon" for product "Echo Firmware" and version " < 2018-04-27"
-
Affected
in Amazon
Search vendor "Amazon"
Echo
Search vendor "Amazon" for product "Echo"
--
Safe