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Critical, CVSS 9.8

Use of a Broken or Risky Cryptographic Algorithm in Apache Hadoop

CVE-2012-4449GHSA-q46v-cj5v-hvg6

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (org.apache.hadoop:hadoop-client 2.0.2, 1.0.4, 0.23.4), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
9.8 · CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
  • CVE-2012-4449: 1.19% estimated exploitation activity in the next 30 days; percentile 68.01 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Apache Hadoop before 0.23.4, 1.x before 1.0.4, and 2.x before 2.0.2 generate token passwords using a 20-bit secret when Kerberos security features are enabled, which makes it easier for context-dependent attackers to crack secret keys via a brute-force attack.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from ghsa record GHSA-q46v-cj5v-hvg6

Agent brief

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# Patch Next advisory brief: CVE-2012-4449

Advisory: Use of a Broken or Risky Cryptographic Algorithm in Apache Hadoop
IDs: CVE-2012-4449, GHSA-q46v-cj5v-hvg6
Record: https://patchnext.com/advisories/cve-2012-4449 (revision 1, source checked 26 Oct 2026, 16:00 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: org.apache.hadoop:hadoop-client 2.0.2, 1.0.4, 0.23.4. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven org.apache.hadoop:hadoop-client: affected < 0.23.4; >= 1.0.0, < 1.0.4; >= 2.0.0, < 2.0.2; fixed in 1.0.4, 2.0.2, 0.23.4

## Suggested inspection (read-only)
- Maven org.apache.hadoop:hadoop-client: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on org.apache.hadoop:hadoop-client.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-q46v-cj5v-hvg6 (GitHub-reviewed advisory GHSA-q46v-cj5v-hvg6 lists affected ranges: Maven org.apache.hadoop:hadoop-client >=0 =1.0.0 =2.0.0 <2.0.2)

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