dbcve.org
ConcourseApplication · Pivotal Software

CVE-2018-1227

HIGH · 7.5 CVSS v3.0 Published 2018-03-13
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click

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
Pivotal Concourse after 2018-03-05 might allow remote attackers to have an unspecified impact, if a customer obtained the Concourse software from a DNS domain that is no longer controlled by Pivotal. The original domain for the Concourse CI (concourse-dot-ci) open source project has been registered by an unknown actor, and is therefore no longer the official website for Concourse CI. The new official domain is concourse-ci.org. At approximately 4 am EDT on March 7, 2018 the Concourse OSS team began receiving reports that the Concourse domain was not responding. The Concourse OSS team discovered, upon investigation with both the original and the new domain registrars, that the originating domain registrar had made the domain available for purchase. This was done despite the domain being renewed by the Concourse OSS team through August 2018. For a customer to be affected, they would have needed to access a download from a "concourse-dot-ci" domain web site after March 6, 2018 18:00:00 EST. Accessing that domain is NOT recommended by Pivotal. Anyone who had been using that domain should immediately begin using the concourse-ci.org domain instead. Customers can also safely access Concourse software from the traditionally available locations on the Pivotal Network or GitHub.

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 confidence

This is a domain takeover vulnerability where the original Concourse CI domain (concourse-dot-ci) was released by the registrar despite being renewed, then registered by an unknown actor. Customers downloading Concourse software from the compromised domain after March 6, 2018 could have received tampered or malicious software packages.

MitigationImmediately stop using the concourse-dot-ci domain and migrate all references to concourse-ci.org. Audit any software or configurations obtained from the old domain since March 6, 2018.

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
ConcourseApplication
Affected:>= 3.9.2

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
None
Integrity
High
Availability
None

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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. Check for references to the compromised domain
    Search all configuration files, CI pipelines, deployment scripts, documentation, and environment variables for the string 'concourse-dot-ci'. Also check ~/.ssh/known_hosts, /etc/hosts, and any DNS configurations.
    Affected if Any reference to concourse-dot-ci is found in the environment
  2. Identify Concourse installation source
    Review installation logs, scripts, or deployment history to determine where the Concourse binary or containers were downloaded from between March 6, 2018 and the remediation date.
    Affected if Downloads or installations originated from concourse-dot-ci or any mirror using that domain
  3. Verify installed Concourse version
    Run 'concourse --version' or check the version of running Concourse containers/pods. Compare against the affected range of >= 3.9.2.
    Affected if Installed version is 3.9.2 or higher AND software was obtained from the compromised domain
  4. Audit software artifacts obtained from the domain
    Review any downloaded tarballs, binaries, Docker images, or packages obtained from concourse-dot-ci between March 6, 2018 and remediation. Check file hashes if available.
    Affected if Any Concourse software artifacts were downloaded from the compromised domain

User is affected if any Concourse installation or configuration references concourse-dot-ci, or if software was downloaded from that domain after March 6, 2018.

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
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Immediately stop using the concourse-dot-ci domain and migrate all references to concourse-ci.org. Audit any software or configurations obtained from the old domain since March 6, 2018.

Fix this in Concourse Scoped from the published advisory
  • Consultation3.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,980
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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-2018-1227 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