CVE-2017-8867
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedElemental Path's CogniToys Dino smart toys through firmware version 0.0.794 use AES-128 with ECB mode to encrypt voice traffic between the device and remote server, allowing a malicious user to map encrypted traffic to a particular AES key index and gaining further access to eavesdrop on privacy-sensitive voice communication of a child and their Dino device.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceThe CogniToys Dino smart toys use AES-128 encryption in ECB (Electronic Codebook) mode to protect voice traffic between the device and remote servers. ECB mode is fundamentally weak because identical plaintext blocks always produce identical ciphertext blocks, allowing an attacker to perform traffic analysis and map encrypted patterns to specific voice commands or communications, enabling eavesdropping on children's voice interactions with the device.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data<= 0.0.794CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify the CogniToys Stemosaur device firmware versionAccess the device settings through the companion mobile application or check the device configuration interface for the current firmware version numberAffected if The displayed firmware version is 0.0.794 or lower
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Compare firmware version against affected rangeNote the firmware version number displayed and compare it to the known affected range of <= 0.0.794Affected if The firmware version is 0.0.794 or any version number lower than this
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Confirm device is actively transmitting voice dataVerify that the CogniToys Stemosaur device has been connected to a network and is actively used for voice interactions with childrenAffected if The device is powered on and has been used for voice communication with remote servers
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Determine if ECB encryption mode is in useThis requires access to firmware analysis or network traffic inspection capabilities - check if the device firmware or network traffic patterns reveal AES-128 being used in ECB mode rather than an authenticated encryption modeAffected if Analysis confirms AES-128 ECB mode is being used for voice traffic encryption
The device is affected if the CogniToys Stemosaur firmware version is 0.0.794 or lower and the device transmits voice data using ECB-mode encryption.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataReplace ECB mode with an authenticated encryption mode such as AES-GCM or implement AES-CBC with HMAC for integrity. Additionally, implement proper key management with key rotation and forward secrecy to prevent replay and correlation attacks.
- Consultation8.0 h
- Implementation40.0 h
- Testing16.0 h
- Review / QA8.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-8867 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2017-8867 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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