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Puppet EnterpriseApplication · Puppet

CVE-2018-6511

MEDIUM · 5.4 CVSS v3.1 Published 2018-05-08
Fix available
A fix is available. Upgrade to 2017.3.6 or later.
See remediation →
58/100
Remediation priority · Elevated
Remotely reachable

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 · unedited
A cross-site scripting vulnerability in Puppet Enterprise Console of Puppet Enterprise allows a user to inject scripts into the Puppet Enterprise Console when using the Puppet Enterprise Console. Affected releases are Puppet Puppet Enterprise: 2017.3.x versions prior to 2017.3.6.

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 confidence

Cross-site scripting (XSS) vulnerability in Puppet Enterprise Console allows attackers to inject malicious scripts that execute in the browsers of other users viewing the affected console interface, potentially leading to session hijacking or credential theft.

MitigationUpgrade Puppet Enterprise to version 2017.3.6 or later which contains the XSS fix. Alternatively, implement input validation and output encoding on all user-supplied content in the console.

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
Puppet EnterpriseApplication
Affected:< 2017.3.6

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
Low
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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 checks

Work through these to decide whether this CVE applies to you.

  1. Determine Puppet Enterprise version
    Run `puppet --version` or check the console login page footer for the version number
    Affected if Version is lower than 2017.3.6 (for example, 2017.3.5, 2017.3.0, or earlier releases)
  2. Verify the console interface is accessible
    Access the Puppet Enterprise console web interface via browser at the configured hostname or IP on port 443
    Affected if The console is reachable and displays a login page showing a version below 2017.3.6
  3. Check for user-supplied input fields in console
    Log into the console and identify fields that accept user input such as node descriptions, class parameters, or report comments
    Affected if The console accepts user-supplied content without visible input validation indicators

If the installed Puppet Enterprise version is below 2017.3.6 and the console interface is accessible, the environment is affected by this XSS vulnerability.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Upgrade available Upgrade to 2017.3.6 or later
Fixed in 2017.3.6
Interim mitigation

Upgrade Puppet Enterprise to version 2017.3.6 or later which contains the XSS fix. Alternatively, implement input validation and output encoding on all user-supplied content in the console.

Fix this in Puppet Enterprise Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA1.0 h
9.0 hours of engineering $1,600
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2018-6511 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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
  • No spam, self-promotion, credentials, or personal data