# CVE-2009-4440: Race condition in n/a

> Remote attackers can hijack authenticated user connections via race conditions in Sun Directory Server, gaining user privileges without authentication.

- **Severity:** Medium 6.8 (`AV:N/AC:M/Au:N/C:P/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 28 Dec 2009
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-pwc8-mq5g-v7jf

## What is CVE-2009-4440?

CVE-2009-4440 is a medium-severity vulnerability in n/a, published on 28 Dec 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Directory Proxy Server (DPS) in Sun Java System Directory Server Enterprise Edition 6.0 through 6.3.1 does not properly handle multiple client connections within a short time window, which allows remote attackers to hijack the backend connection of an authenticated user, and obtain the privileges of this user, by making a client connection in opportunistic circumstances, related to "long binds," aka Bug Ids 6828462 and 6823593.

Weakness: CWE-362 (Concurrent Execution using Shared Resource with Improper Synchronization)

## Which versions are affected by CVE-2009-4440?

It affects 1 product.


Products: Sun Java System Directory Server.

## How do I fix CVE-2009-4440?

No fix has been published for CVE-2009-4440 yet. Limit exposure of the affected software until one is available.

## Is CVE-2009-4440 being exploited?

There is no known exploitation of CVE-2009-4440 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2009-0609](https://insights.sbomify.com/CVE-2009-0609/): Denial of service in n/a (high 7.8)
- [CVE-2009-0576](https://insights.sbomify.com/CVE-2009-0576/): Denial of service in n/a (high 7.8)
- [CVE-2007-2466](https://insights.sbomify.com/CVE-2007-2466/): Denial of service in n/a (high 7.8)
- [CVE-2006-4175](https://insights.sbomify.com/CVE-2006-4175/): Denial of service in n/a (high 7.8)
- [CVE-2008-1995](https://insights.sbomify.com/CVE-2008-1995/): Auth bypass in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2009-4440 and fix it if it is affected.

What it is: CVE-2009-4440 is a medium-severity vulnerability in n/a, published on 28 Dec 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2009-4440 in the wild and no public exploit code.

Affected product: n/a. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2009-4440/ (Markdown: https://insights.sbomify.com/CVE-2009-4440/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2009-4440
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2009-4440
- OSV: https://osv.dev/vulnerability/CVE-2009-4440

---
From sbomify Insights: https://insights.sbomify.com/CVE-2009-4440/
Summaries are generated and may contain mistakes; the official description above is the record.