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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2018-11567 Detail

Disputed     

Current Description

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.


View Analysis Description

Metrics

 
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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://info.checkmarx.com/hubfs/Amazon_Echo_Research.pdf Exploit  Third Party Advisory 
https://info.checkmarx.com/hubfs/Amazon_Echo_Research.pdf Exploit  Third Party Advisory 
https://www.checkmarx.com/2018/04/25/eavesdropping-with-amazon-alexa/ Third Party Advisory 
https://www.checkmarx.com/2018/04/25/eavesdropping-with-amazon-alexa/ Third Party Advisory 
https://www.wired.com/story/amazon-echo-alexa-skill-spying/ Press/Media Coverage  Third Party Advisory 
https://www.wired.com/story/amazon-echo-alexa-skill-spying/ Press/Media Coverage  Third Party Advisory 
https://www.yahoo.com/news/amazon-alexa-bug-let-hackers-104609600.html Press/Media Coverage  Third Party Advisory 
https://www.yahoo.com/news/amazon-alexa-bug-let-hackers-104609600.html Press/Media Coverage  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-384 Session Fixation cwe source acceptance level NIST  

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Change History

9 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-11567
NVD Published Date:
05/30/2018
NVD Last Modified:
11/20/2024
Source:
MITRE