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Couchbase ServerApplication · Couchbase

CVE-2024-37034

MEDIUM · 5.9 CVSS v3.1 Published 2024-07-26
Fix available
A fix is available. Upgrade to 7.2.5 or later.
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
An issue was discovered in Couchbase Server before 7.2.5 and 7.6.0 before 7.6.1. It does not ensure that credentials are negotiated with the Key-Value (KV) service using SCRAM-SHA when remote link encryption is configured for Half-Secure.

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

When Couchbase Server is configured with remote link encryption set to 'Half-Secure' mode, the Key-Value (KV) service fails to enforce SCRAM-SHA authentication for credential negotiation, potentially allowing fallback to weaker authentication mechanisms.

MitigationUpgrade Couchbase Server to version 7.2.5 or 7.6.1 or later, which enforces SCRAM-SHA authentication for the KV service when Half-Secure mode is configured.

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
Couchbase ServerApplication
Affected:>= 6.0.0, < 7.2.5= 7.6.0

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:3.1/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. Identify Couchbase Server version
    Run the Couchbase CLI version command or check the installed package version to determine the exact version number of Couchbase Server
    Affected if The installed version is greater than or equal to 6.0.0 and less than 7.2.5, or exactly 7.6.0
  2. Confirm remote link encryption mode
    Access Couchbase Server configuration settings and check the remote link encryption setting, looking specifically for a value of 'Half-Secure'
    Affected if Remote link encryption is configured as 'Half-Secure' mode
  3. Verify KV service is exposed
    Check if the Key-Value (KV) service is enabled and accessible in the Couchbase deployment
    Affected if The KV service is active and handles client connections
  4. Check authentication mechanism in use
    Inspect the authentication configuration for KV service connections to determine if SCRAM-SHA is enforced or if weaker mechanisms can be negotiated
    Affected if SCRAM-SHA authentication is not enforced and fallback to weaker mechanisms is possible

A user is affected if their Couchbase Server version falls within 6.0.0 through 7.2.4 or equals 7.6.0 AND remote link encryption is configured to Half-Secure mode, allowing potential fallback to weaker authentication for the KV service

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.

dbcve · scoped
Upgrade available Upgrade to 7.2.5 or later
Fixed in 7.2.5
Interim mitigation

Upgrade Couchbase Server to version 7.2.5 or 7.6.1 or later, which enforces SCRAM-SHA authentication for the KV service when Half-Secure mode is configured.

Recommended fix High confidence

Upgrade to 7.2.5 (for 6.0.0-7.2.4) or 7.6.1 (for 7.6.0)

  1. 1. Back up your Couchbase Server cluster data and configuration before upgrading.
  2. 2. Review the Couchbase Server upgrade documentation for your current version at docs.couchbase.com.
  3. 3. For versions 6.0.0 through 7.2.4: plan upgrade to version 7.2.5.
  4. 4. For version 7.6.0: plan upgrade to version 7.6.1.
  5. 5. Schedule maintenance window as upgrades may require cluster restart.
  6. 6. Perform the upgrade using Couchbase Server's rolling upgrade procedure or standard upgrade method appropriate for your deployment.
  7. 7. After upgrade, verify that SCRAM-SHA authentication is being used for KV service connections when remote link encryption is enabled.
  8. 8. Confirm the upgrade was successful by checking cluster health and functionality.
Caveat Standard upgrade considerations apply - review release notes for any behavior changes between your current version and target version

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Couchbase Server Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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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-2024-37034 in production — separate from our analysis above.

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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