CVE-2020-24396
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 · uneditedhomee Brain Cube v2 (2.28.2 and 2.28.4) devices have sensitive SSH keys within downloadable and unencrypted firmware images. This allows remote attackers to use the support server as a SOCKS proxy.
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 · moderate confidenceThe homee Brain Cube v2 devices (versions 2.28.2 and 2.28.4) store sensitive SSH private keys in plaintext within downloadable firmware images. Attackers can extract these keys from the firmware and use the device's support server as a SOCKS proxy for anonymized malicious traffic.
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= 2.28.2= 2.28.4CVSS 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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/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 device modelLocate the physical device or check device inventory/documentation to confirm it is a homee Brain Cube Core (v2 model).Affected if The device is a homee Brain Cube Core v2.
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Check the installed firmware versionAccess the device management interface or check the device status page to retrieve the firmware version number.Affected if The firmware version is 2.28.2 or 2.28.4.
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Obtain the firmware imageDownload the firmware image from the vendor's official support or update server using the same URL path you would use for normal firmware updates.Affected if You have a firmware image from an affected version (2.28.2 or 2.28.4).
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Extract and inspect firmware for SSH private keysExtract the firmware binary (using binwalk, dd, or similar tools) and search within the extracted filesystem for PEM-formatted private key files (look for BEGIN OPENSSH PRIVATE KEY, BEGIN RSA PRIVATE KEY, or similar headers in plaintext).Affected if Plaintext SSH private key files are found inside the firmware image.
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Verify the keys are device-relatedExamine the extracted private key files to confirm they correspond to the device's support server or SSH configuration.Affected if The plaintext keys match the device's SSH configuration or support server endpoints.
You are affected if you are running a homee Brain Cube Core v2 with firmware version 2.28.2 or 2.28.4 and your downloaded firmware image contains plaintext SSH private keys.
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 dataRotate all SSH keys associated with affected devices and update to a patched firmware version that encrypts firmware images. Monitor for unauthorized proxy activity originating from the support server infrastructure.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-24396 — 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-2020-24396 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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