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HadoopApplication · Apache

CVE-2017-3161

MEDIUM · 6.1 CVSS v3.0 Published 2017-04-26
Fix available
A fix is available. Upgrade to after 2.6.5 or later.
See remediation →
68/100
Remediation priority · Elevated
Remotely reachable No privileges

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 HDFS web UI in Apache Hadoop before 2.7.0 is vulnerable to a cross-site scripting (XSS) attack through an unescaped query parameter.

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 HDFS web UI in Apache Hadoop versions prior to 2.7.0 contains a cross-site scripting (XSS) vulnerability due to improper handling of query parameters. An attacker can inject malicious scripts through unescaped query parameters in the web interface.

MitigationUpgrade Apache Hadoop to version 2.7.0 or later to receive the patch that properly escapes query parameters in the HDFS web UI.

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
HadoopApplication
Affected:<= 2.6.5

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
Low
Privileges
None
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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. Check installed Hadoop version
    Run 'hadoop version' or check the Hadoop distribution package metadata to determine the exact version number
    Affected if Version is 2.6.5 or earlier (any version prior to 2.7.0)
  2. Verify HDFS NameNode web UI is running
    Check if the HDFS web interface port (default 50070, or 9870 in Hadoop 3.x) is listening and accessible by running 'netstat -tlnp | grep -E "50070|9870"' or accessing the URL in a browser
    Affected if The HDFS NameNode web UI is accessible and running
  3. Confirm web UI is network-exposed
    Review Hadoop configuration files (core-site.xml, hdfs-site.xml) for 'dfs.namenode.http-address' and 'dfs.http.policy' settings, and check firewall rules to determine if the web UI port is exposed beyond localhost
    Affected if The web UI is bound to a non-localhost address or accessible from network segments other than trusted administrative networks

A user is affected if they run Hadoop version 2.6.5 or earlier AND have the HDFS NameNode web UI accessible (especially over a network), as the XSS flaw requires the vulnerable web interface to be reachable.

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
Upgrade available Upgrade to a release after 2.6.5
Interim mitigation

Upgrade Apache Hadoop to version 2.7.0 or later to receive the patch that properly escapes query parameters in the HDFS web UI.

Fix this in Hadoop Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing4.0 h
  • Review / QA2.0 h
12.0 hours of engineering $2,080
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,328.

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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-2017-3161 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