CVE-2018-11567
Amazon Echo Unintended Speech Logging Vulnerability
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.
INFO
Published Date :
May 30, 2018, 10:29 p.m.
Last Modified :
Aug. 5, 2024, 8:15 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
1.4
Exploitability Score :
1.8
Affected Products
The following products are affected by CVE-2018-11567
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2018-11567.
| URL | Resource |
|---|---|
| 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.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 |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2018-11567 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2018-11567 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
Aug. 05, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
May. 17, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Apr. 11, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Mar. 21, 2024
Action Type Old Value New Value Added Tag MITRE disputed -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Changed 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." 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. -
Initial Analysis by [email protected]
Jul. 05, 2018
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 (AV:N/AC:M/Au:N/C:P/I:N/A:N) Added CVSS V3 AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N 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.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.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.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 Added CWE CWE-384 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_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_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_spot_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2018-04-27 OR cpe:2.3:h:amazon:echo_spot:-:*:*:*:*:*:*:* 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:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jun. 01, 2018
Action Type Old Value New Value Changed 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. ** 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."
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2018-11567 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2018-11567
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.10 }} 0.01%
score
0.41474
percentile