Hyperflex Hx Data PlatformOperating system · Cisco
CVE-2018-15382
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 · uneditedA vulnerability in Cisco HyperFlex Software could allow an unauthenticated, remote attacker to generate valid, signed session tokens. The vulnerability is due to a static signing key that is present in all Cisco HyperFlex systems. An attacker could exploit this vulnerability by accessing the static signing key from one HyperFlex system and using it to generate valid, signed session tokens for another HyperFlex system. A successful exploit could allow the attacker to access the HyperFlex Web UI of a system for which they are not authorized.
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 confidenceCisco HyperFlex contains a static, hardcoded signing key embedded in all installations. An attacker who extracts this key from one HyperFlex system can forge valid session tokens and authenticate to any other HyperFlex deployment, bypassing authentication entirely and gaining unauthorized access to the Web UI.
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
Hyperflex Hx Data PlatformOperating system
= 3.0\(1a\)CVSS 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
- Low
- Integrity
- Low
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/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 installed HyperFlex productRun the command 'show version' or check the HyperFlex cluster management UI to confirm the product name is Cisco HyperFlex Hx Data PlatformAffected if The product is not Cisco HyperFlex Hx Data Platform
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Determine the Hx Data Platform versionExecute 'show version' on the HyperFlex controller VM or check the cluster information page in the Web UI for the exact version stringAffected if The version string does not match 3.0(1a)
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Confirm the signing key is staticThis check is inherent to version 3.0(1a). In this version, all deployments share the same static hardcoded signing key for session token generation. No additional file inspection is needed - if the version is 3.0(1a), the vulnerability is present.Affected if The version is 3.0(1a) - the static key exists in every installation of this version
If the installed Cisco HyperFlex Hx Data Platform version is exactly 3.0(1a), the environment contains the static hardcoded signing key and is affected by CVE-2018-15382.
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 dataApply Cisco's vendor patches for CVE-2018-15382 which replace the static signing key with dynamically generated, unique keys per installation.
Fix this in Hyperflex Hx Data Platform
Scoped from the published advisory
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 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 $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-15382 — 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-2018-15382 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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- Version or environment caveats, and links to real fixes
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