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CVE Record

CVE-2018-6511: XSS Vulnerability in Puppet Enterprise Console

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.

MediumCVSS 5.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2018-6511 is an authenticated cross-site scripting issue in Puppet Enterprise Console. A logged-in user could inject script content that runs in another user's console session. Business impact is moderate: the issue can affect confidentiality and integrity in an administrative interface, but it requires privileges and user interaction.

Executive priority

Prioritize remediation for any internet-accessible or broadly accessible Puppet Enterprise Console. This is not a critical outage-class issue, but administrative-console XSS can undermine trust in management workflows and should not remain open in legacy infrastructure.

Technical view

Affected releases are Puppet Enterprise 2017.3.x before 2017.3.6. CVSS 3.0 is 5.4: network reachable, low complexity, low privileges required, user interaction required, changed scope, low confidentiality and integrity impact, no availability impact. The source bundle does not provide a CWE or detailed sink/vector.

Likely exposure

Exposure is limited to organizations still running Puppet Enterprise 2017.3.x versions earlier than 2017.3.6, especially where the Console is reachable by multiple authenticated users. The provided sources do not identify other affected product lines or versions.

Exploitation context

The bundle does not report active exploitation, and KEV is false. Exploitation would require an authenticated user and interaction by another console user, making this more likely in environments with broad console access or weak administrative segregation.

Researcher notes

Key gaps: the bundle gives no CWE, no detailed vulnerable parameter, and no exploit-status evidence beyond KEV being false. Keep validation non-invasive and version-focused unless Puppet's advisory or internal testing provides authorized detail.

Mitigation direction

  • Upgrade affected Puppet Enterprise 2017.3.x systems to 2017.3.6 or a vendor-supported fixed release.
  • Restrict Puppet Enterprise Console access to trusted administrators until remediation is complete.
  • Review Puppet's advisory for any environment-specific upgrade or workaround guidance.
  • Retire or isolate unsupported Puppet Enterprise versions if upgrade is not immediately possible.

Validation and detection

  • Inventory Puppet Enterprise versions and identify any 2017.3.x installations below 2017.3.6.
  • Confirm whether Puppet Enterprise Console is enabled and reachable by authenticated users.
  • Review console user roles and remove unnecessary access.
  • Check application logs for suspicious console input or unexpected script-like content.
Prepared
Confidence
high
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2018-6511 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.4 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.4CVSS 3.0MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N2.32.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

5.4Medium
CVSS 3.0 vector shape for CVE-2018-6511Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
PuppetPuppet Enterprise2017.3.xListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.