CVE-2018-11567
CVSS V2 Medium 4.3
CVSS V3 Low 3.3
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."
Overview
- CVE ID
- CVE-2018-11567
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2018-05-30T22:29:00
- Last Modified Date
- 2018-07-05T14:40:13
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:o:amazon:echo_show_firmware:*:*:*:*:*:*:*:* | 1 | OR | 2018-04-27 | |
| cpe:2.3:h:amazon:echo_show:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:amazon:echo_plus_firmware:*:*:*:*:*:*:*:* | 1 | OR | 2018-04-27 | |
| cpe:2.3:h:amazon:echo_plus:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:amazon:echo_dot_firmware:*:*:*:*:*:*:*:* | 1 | OR | 2018-04-27 | |
| cpe:2.3:h:amazon:echo_dot:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:amazon:echo_spot_firmware:*:*:*:*:*:*:*:* | 1 | OR | 2018-04-27 | |
| cpe:2.3:h:amazon:echo_spot:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:amazon:echo_firmware:*:*:*:*:*:*:*:* | 1 | OR | 2018-04-27 | |
| cpe:2.3:h:amazon:echo:-:*:*:*:*:*:*:* | 0 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:P/I:N/A:N
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 4.3
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.0
- Vector String
- CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
- Attack Vector
- LOCAL
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality Impact
- LOW
- Availability Impact
- NONE
- Base Score
- 3.3
- Base Severity
- LOW
- Exploitability Score
- 1.8
- Impact Score
- 1.4
References
| Reference URL | Reference Tags |
|---|---|
| https://www.yahoo.com/news/amazon-alexa-bug-let-hackers-104609600.html | Press/Media Coverage Third Party Advisory |
| https://www.wired.com/story/amazon-echo-alexa-skill-spying/ | Press/Media Coverage Third Party Advisory |
| https://www.checkmarx.com/2018/04/25/eavesdropping-with-amazon-alexa/ | Third Party Advisory |
| https://info.checkmarx.com/hubfs/Amazon_Echo_Research.pdf | Exploit Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2018-11567 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11567 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 18:41:28 | Added to TrackCVE | |||
| 2022-12-03 06:48:35 | 2018-05-30T22:29Z | 2018-05-30T22:29:00 | CVE Published Date | updated |
| 2022-12-03 06:48:35 | 2018-07-05T14:40:13 | CVE Modified Date | updated | |
| 2022-12-03 06:48:35 | Analyzed | Vulnerability Status | updated |