AccumuloApplication · Apache
CVE-2023-34340
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 · uneditedImproper Authentication vulnerability in Apache Software Foundation Apache Accumulo. This issue affects Apache Accumulo: 2.1.0. Accumulo 2.1.0 contains a defect in the user authentication process that may succeed when invalid credentials are provided. Users are advised to upgrade to 2.1.1.
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 confidenceApache Accumulo 2.1.0 contains an improper authentication vulnerability where the user authentication process may incorrectly succeed when invalid credentials are provided. This is a critical authentication bypass defect that could allow unauthorized access to the Accumulo system.
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
AccumuloApplication
= 2.1.0CVSS 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
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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 checksWork through these to decide whether this CVE applies to you.
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Identify installed Apache Accumulo versionRun 'accumulo version' from the Accumulo installation directory or check the Accumulo manifest/version file in the installation directoryAffected if The reported version is exactly 2.1.0
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Verify Accumulo process is runningCheck for running Accumulo processes using 'ps aux | grep accumulo' or check if the Accumulo service is activeAffected if Accumulo version 2.1.0 is running as a service
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Confirm authentication is enabledReview the accumulo-site.xml configuration file for authentication-related settings such as 'instance.security.authenticator' and verify authentication is not explicitly disabledAffected if Authentication is enabled (the default configuration) on an Accumulo 2.1.0 installation
You are affected if your Apache Accumulo installation reports version 2.1.0 and authentication is in use (the default state).
Generated from the published advisory. Verify against your own configuration.
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 · scopedUpgrade to Apache Accumulo 2.1.1 which contains the fix for this authentication defect.
2.1.1
- 1. Review Apache Accumulo 2.1.1 release notes and changelog for any breaking changes or migration considerations
- 2. Create a backup of your current Accumulo configuration and data directories
- 3. Stop all Accumulo services (tablet servers, master, tracer, monitor)
- 4. Upgrade the Accumulo software binaries from 2.1.0 to 2.1.1 on all nodes in your cluster
- 5. Verify configuration files are compatible with version 2.1.1
- 6. Start Accumulo services in the correct order (zookeeper first, then master, then tablet servers)
- 7. Verify authentication is working correctly with valid credentials
- 8. Confirm that invalid credentials are properly rejected
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Accumulo
Scoped from the published advisory
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-34340 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-34340 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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