CVE-2018-6512
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 · uneditedThe previous version of Puppet Enterprise 2018.1 is vulnerable to unsafe code execution when upgrading pe-razor-server. Affected releases are Puppet Enterprise: 2018.1.x versions prior to 2018.1.1 and razor-server and pe-razor-server prior to 1.9.0.0.
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 confidencePuppet Enterprise 2018.1.x versions prior to 2018.1.1 contain unsafe code execution vulnerability in the pe-razor-server upgrade process, allowing remote attackers to potentially execute arbitrary code with elevated privileges by exploiting the upgrade mechanism.
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< 1.9.0.0>= 2018.1.0, < 2018.1.1< 1.9.0.0CVSS 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
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/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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Check Puppet Enterprise versionRun `puppet --version` or check the Puppet Enterprise console for the installed versionAffected if Version is >= 2018.1.0 and < 2018.1.1
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Check if Razor Server component is installedRun `facter razor_server_version` or check for the presence of razor-server package using your system package manager (e.g., `rpm -qa | grep razor` or `dpkg -l | grep razor`)Affected if razor-server or pe-razor-server component is present on the system
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Check Razor Server versionRun `facter razor_server_version` or examine the installed package version directly using the package managerAffected if Razor Server version is below 1.9.0.0 (or pe-razor-server version is below 1.9.0.0)
You are affected if Puppet Enterprise 2018.1.0 is running AND the razor-server or pe-razor-server component is installed with a version prior to 1.9.0.0.
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.
dbcve · scoped1.9.0.02018.1.1
Upgrade Puppet Enterprise to version 2018.1.1 or later and ensure razor-server/pe-razor-server components are updated to version 1.9.0.0 or later to remediate this critical vulnerability.
Puppet Enterprise 2018.1.1 (or later) | razor-server 1.9.0.0 (or later) | pe-razor-server 1.9.0.0 (or later)
- If using Puppet Enterprise 2018.1.x, upgrade to Puppet Enterprise 2018.1.1 or later
- If using pe-razor-server, upgrade to version 1.9.0.0 or later
- If using open-source razor-server, upgrade to version 1.9.0.0 or later
- After upgrading, verify the pe-razor-server service is running correctly
- Review Puppet Enterprise upgrade documentation for standard upgrade procedures
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation1.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,664.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-6512 — 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-2018-6512 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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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