CVE-2016-4949
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 · uneditedCloudera Manager 5.5 and earlier allows remote attackers to obtain sensitive information via a (1) stderr.log or (2) stdout.log value in the filename parameter to /cmf/process/<process_id>/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 · high confidenceCloudera Manager 5.5 and earlier contains a path traversal vulnerability in the log viewing endpoint (/cmf/process/<process_id>/logs). By specifying 'stderr.log' or 'stdout.log' in the filename parameter, remote attackers can access arbitrary log files through the web interface, potentially exposing sensitive system information, credentials, or configuration details stored in logs.
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<= 5.5.0CVSS 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
- None
- Availability
- None
CVSS:3.0/AV:N/AC:L/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 checksWork through these to decide whether this CVE applies to you.
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Identify Cloudera Manager installationRun 'cloudera-scm-server status' or check for /etc/cloudera-scm-server/conf directory, or look for process 'cloudera-scm-server' runningAffected if Cloudera Manager is installed and running on the system
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Check Cloudera Manager versionAccess the Cloudera Manager web UI and view the version in the footer, or run 'cat /etc/cloudera-scm-server/cmfservr.properties' and look for 'cloudera-manager.deb.version' or 'cloudera-manager.rpm.version'Affected if Version is 5.5.0 or earlier (the vulnerable range)
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Verify web interface accessibilityAttempt to access the Cloudera Manager web UI at port 7180 (HTTP) or 7183 (HTTPS) from an untrusted network perspectiveAffected if Web interface is reachable from networks outside the trusted admin perimeter
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Test for vulnerable endpoint exposureUsing a web browser or curl, attempt to access a URL pattern like 'https://<cm-host>:7183/cmf/process/1/logs?filename=../../../../etc/passwd' or check if the /cmf/process/*/logs endpoint respondsAffected if The /cmf/process/<process_id>/logs endpoint is accessible and accepts a filename parameter without proper validation
You are affected if Cloudera Manager version 5.5.0 or earlier is installed and its web interface is accessible over the network, allowing unauthenticated or authenticated users to reach the vulnerable log viewing endpoint.
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 dataUpgrade to Cloudera Manager 5.6 or later. If immediate upgrading is not feasible, restrict network access to the Cloudera Manager web interface to trusted IPs only as a compensating control.
- Consultation2.0 h
- Implementation1.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2016-4949 — 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-2016-4949 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
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data