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Cloud EnterpriseApplication · Elasticsearch

CVE-2017-8444

MEDIUM · 5.9 CVSS v3.0 Published 2017-09-29
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
68/100
Remediation priority · Elevated
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
The client-forwarder in Elastic Cloud Enterprise versions prior to 1.0.2 do not properly encrypt traffic to ZooKeeper. If an attacker is able to man in the middle (MITM) the traffic between the client-forwarder and ZooKeeper they could potentially obtain sensitive data.

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

The client-forwarder component in Elastic Cloud Enterprise versions prior to 1.0.2 fails to properly encrypt traffic between itself and ZooKeeper. An attacker performing a man-in-the-middle attack on this communication channel could intercept sensitive data transmitted in the unencrypted traffic.

MitigationUpgrade Elastic Cloud Enterprise to version 1.0.2 or later, which implements proper encryption for client-forwarder to ZooKeeper communications.

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
Cloud EnterpriseApplication
Affected:= 1.0.0= 1.0.1

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
High
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/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. Confirm Elastic Cloud Enterprise installation
    Locate ECE installation by checking for its process (ece-controller, eece-runner) or installation directory (/opt/ece). Use 'ps aux | grep -i ece' or check common installation paths.
    Affected if ECE processes or installation directory exists on the host
  2. Determine installed ECE version
    Query the ECE version via its admin API endpoint (typically https://localhost:12400/api/v1/platform), or check version files in the ECE installation directory such as VERSION.txt or docker-compose.yml metadata.
    Affected if Version cannot be determined or differs from affected versions
  3. Verify version is affected
    Compare the installed version against the affected range: 1.0.0 or 1.0.1. If using ECE admin API, check the /api/v1/platform/version response field.
    Affected if Installed version is exactly 1.0.0 or 1.0.1

If Elastic Cloud Enterprise version 1.0.0 or 1.0.1 is confirmed, the client-forwarder to ZooKeeper communication is vulnerable to unencrypted traffic interception.

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

Upgrade Elastic Cloud Enterprise to version 1.0.2 or later, which implements proper encryption for client-forwarder to ZooKeeper communications.

Fix this in Cloud Enterprise Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing3.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,490
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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-2017-8444 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