CVE-2017-16335
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 · uneditedMultiple exploitable buffer overflow vulnerabilities exist in the PubNub message handler for the "cc" channel of Insteon Hub running firmware version 1012. Specially crafted commands sent through the PubNub service can cause a stack-based buffer overflow overwriting arbitrary data. An attacker should send an authenticated HTTP request to trigger this vulnerability. In cmd s_event_var, at 0x9d01ee70, the value for the `s_offset` key is copied using `strcpy` to the buffer at `$sp+0x2b0`.This buffer is 32 bytes large, sending anything longer will cause a buffer overflow.
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 confidenceStack-based buffer overflow in Insteon Hub firmware 1012 PubNub handler for the 'cc' channel. The 's_offset' key value is copied using unsafe strcpy to a 32-byte buffer at stack position $sp+0x2b0, allowing overflow and arbitrary data overwrite with authenticated HTTP requests via PubNub.
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= 1012CVSS 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
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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 device modelConfirm the target device is an Insteon Hub (model numbers 2242-222, 2245-222, or similar Insteon Hub devices)Affected if The device is an Insteon Hub
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Check firmware versionAccess the Insteon Hub web interface or check via Insteon app, navigate to Settings > Device Settings, or use the Insteon API to query firmware versionAffected if Firmware version is exactly 1012 (only version 1012 is listed as affected)
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Verify PubNub integration is enabledCheck Insteon Hub settings for PubNub cloud connectivity - look for 'Insteon Hub' or 'PubNub' configuration in the device settings or API statusAffected if PubNub cloud access is enabled and configured
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Confirm cc channel is accessibleInspect network traffic or API configuration to determine if the 'cc' channel is active - this channel handles device control commandsAffected if The 'cc' PubNub channel is enabled and accepting commands
The environment is affected only if the device is an Insteon Hub running firmware version 1012 with PubNub and the cc channel enabled, as the buffer overflow only triggers via authenticated HTTP requests through that specific channel.
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 unbounded strcpy with strncpy or snprintf with proper length checking, add input validation for s_offset before copy, and deploy patched firmware; network segmentation can reduce exposure until patch is applied.
- Consultation3.0 h
- Implementation6.0 h
- Testing5.0 h
- Review / QA3.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2017-16335 — 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-2017-16335 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
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- Version or environment caveats, and links to real fixes
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