CVE-2021-3167
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 · uneditedIn Cloudera Data Engineering (CDE) 1.3.0, JWT authentication tokens are exposed to administrators in virtual cluster server logs.
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 · moderate confidenceIn Cloudera Data Engineering 1.3.0, JWT authentication tokens are inadvertently written to virtual cluster server logs, exposing them to any administrator with log file access. This is an information disclosure vulnerability where sensitive authentication credentials are persisted in plain text.
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= 1.3.0CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/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 checksWork through these to decide whether this CVE applies to you.
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Confirm Cloudera Data Engineering versionRun the command to query the installed Cloudera Data Engineering version (e.g., via Cloudera Manager or cde CLI: 'cde version' or check via Cloudera Manager UI under Data Engineering > About)Affected if The installed version is exactly 1.3.0 (only this version is affected)
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Identify virtual cluster server log locationsLocate the virtual cluster server log files - typically found in the Cloudera Data Engineering spool/log directories for the virtual cluster (check Cloudera Manager or the virtual cluster configuration for log directory paths)Affected if You have virtual cluster server logs that may contain authentication records
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Search logs for JWT token patternsGrep through the virtual cluster server log files for JWT token patterns - look for strings matching the JWT format (three base64-encoded segments separated by dots, such as 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...')Affected if Any plain-text JWT tokens are found in the log files, indicating the vulnerability is present
You are affected if you run Cloudera Data Engineering version 1.3.0 AND its virtual cluster server logs contain any plain-text JWT authentication tokens.
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.
From vendor dataConfigure logging to exclude JWT tokens from output, rotate any potentially exposed tokens, and upgrade to a patched version if available. Review and purge existing logs containing tokens.
- 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-2021-3167 — 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-2021-3167 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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