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CVE-2018-11567
Detail
Disputed
Modified
This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
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.
** 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."
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.
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** 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
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
Initial Analysis by NIST7/05/2018 10:40:13 AM
Action
Type
Old Value
New Value
Added
CPE Configuration
AND
OR
*cpe:2.3:o:amazon:echo_dot_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2018-04-27
OR
cpe:2.3:h:amazon:echo_dot:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:amazon:echo_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2018-04-27
OR
cpe:2.3:h:amazon:echo:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:amazon:echo_plus_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2018-04-27
OR
cpe:2.3:h:amazon:echo_plus:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:amazon:echo_show_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2018-04-27
OR
cpe:2.3:h:amazon:echo_show:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:amazon:echo_spot_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2018-04-27
OR
cpe:2.3:h:amazon:echo_spot:-:*:*:*:*:*:*:*
Added
CVSS V2
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Added
CVSS V2 Metadata
Victim must voluntarily interact with attack mechanism
Added
CVSS V3
AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Added
CWE
CWE-384
Changed
Reference Type
https://info.checkmarx.com/hubfs/Amazon_Echo_Research.pdf No Types Assigned
https://info.checkmarx.com/hubfs/Amazon_Echo_Research.pdf Exploit, Third Party Advisory
Changed
Reference Type
https://www.checkmarx.com/2018/04/25/eavesdropping-with-amazon-alexa/ No Types Assigned
https://www.checkmarx.com/2018/04/25/eavesdropping-with-amazon-alexa/ Third Party Advisory
Changed
Reference Type
https://www.wired.com/story/amazon-echo-alexa-skill-spying/ No Types Assigned
https://www.wired.com/story/amazon-echo-alexa-skill-spying/ Press/Media Coverage, Third Party Advisory
Changed
Reference Type
https://www.yahoo.com/news/amazon-alexa-bug-let-hackers-104609600.html No Types Assigned
https://www.yahoo.com/news/amazon-alexa-bug-let-hackers-104609600.html Press/Media Coverage, Third Party Advisory
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
** 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
Quick Info
CVE Dictionary Entry: CVE-2018-11567 NVD
Published Date: 05/30/2018 NVD
Last Modified: 04/10/2024
Source: MITRE
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