Vulnerability-Lookup

GHSA-VJFX-9V82-G36P

Vulnerability from github – Published: 2022-05-14 03:15 – Updated: 2024-03-21 03:33

Details

** 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."

Severity ?

3.3 (Low)


                  
                    CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

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{
  "affected": [],
  "aliases": [
    "CVE-2018-11567"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-384"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-05-30T22:29:00Z",
    "severity": "MODERATE"
  },
  "details": "** 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\u0027s 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.\"",
  "id": "GHSA-vjfx-9v82-g36p",
  "modified": "2024-03-21T03:33:25Z",
  "published": "2022-05-14T03:15:01Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-11567"
    },
    {
      "type": "WEB",
      "url": "https://info.checkmarx.com/hubfs/Amazon_Echo_Research.pdf"
    },
    {
      "type": "WEB",
      "url": "https://www.checkmarx.com/2018/04/25/eavesdropping-with-amazon-alexa"
    },
    {
      "type": "WEB",
      "url": "https://www.wired.com/story/amazon-echo-alexa-skill-spying"
    },
    {
      "type": "WEB",
      "url": "https://www.yahoo.com/news/amazon-alexa-bug-let-hackers-104609600.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2018-11567 (GCVE-0-2018-11567)

Vulnerability from cvelistv5 – Published: 2018-05-30 22:00 – Updated: 2024-08-05 08:10 Disputed

Summary

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.

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	https://www.yahoo.com/news/amazon-alexa-bug-let-h…	x_refsource_MISC
	https://www.wired.com/story/amazon-echo-alexa-ski…	x_refsource_MISC
	https://info.checkmarx.com/hubfs/Amazon_Echo_Rese…	x_refsource_MISC
	https://www.checkmarx.com/2018/04/25/eavesdroppin…	x_refsource_MISC

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JSON

To clipboard

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            "url": "https://www.yahoo.com/news/amazon-alexa-bug-let-hackers-104609600.html"
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            "url": "https://www.wired.com/story/amazon-echo-alexa-skill-spying/"
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            "url": "https://info.checkmarx.com/hubfs/Amazon_Echo_Research.pdf"
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-VJFX-9V82-G36P

CVE-2018-11567 (GCVE-0-2018-11567)

Tags

Sightings

Nomenclature