CVE-2018-11567

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Summary

CVECVE-2018-11567
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2018-05-30 22:29:00 UTC
Updated2023-11-07 02:51:00 UTC
Description** DISPUTED ** 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."

Risk And Classification

Problem Types: CWE-384

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Amazon Echo - All All All
Hardware Amazon Echo - All All All
Hardware Amazon Echo Dot - All All All
Hardware Amazon Echo Dot - All All All
Operating System Amazon Echo Dot Firmware All All All All
Operating System Amazon Echo Dot Firmware All All All All
Operating System Amazon Echo Firmware All All All All
Operating System Amazon Echo Firmware All All All All
Hardware Amazon Echo Plus - All All All
Hardware Amazon Echo Plus - All All All
Operating System Amazon Echo Plus Firmware All All All All
Operating System Amazon Echo Plus Firmware All All All All
Hardware Amazon Echo Show - All All All
Hardware Amazon Echo Show - All All All
Operating System Amazon Echo Show Firmware All All All All
Operating System Amazon Echo Show Firmware All All All All
Hardware Amazon Echo Spot - All All All
Hardware Amazon Echo Spot - All All All
Operating System Amazon Echo Spot Firmware All All All All
Operating System Amazon Echo Spot Firmware All All All All

References

ReferenceSourceLinkTags
Eavesdropping with Amazon Alexa MISC www.checkmarx.com Third Party Advisory
Turning an Amazon Echo Into a Spy Device Only Took Some Clever Coding | WIRED MISC www.wired.com Press/Media Coverage, Third Party Advisory
Amazon fixes Alexa bug that let Echo keep listening MISC www.yahoo.com Press/Media Coverage, Third Party Advisory
info.checkmarx.com/hubfs/Amazon_Echo_Research.pdf MISC info.checkmarx.com Exploit, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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