# CVE-2009-5006: Null dereference in n/a

> Remote authenticated users can crash the Apache Qpid broker daemon by modifying an exchange alternate, causing denial of service.

- **Severity:** Medium 4.0 (`AV:N/AC:L/Au:S/C:N/I:N/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 18 Oct 2010
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-8wmw-6vpm-257g

## What is CVE-2009-5006?

CVE-2009-5006 is a medium-severity vulnerability in Redhat Enterprise Mrg, published on 18 Oct 2010. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The SessionAdapter::ExchangeHandlerImpl::checkAlternate function in broker/SessionAdapter.cpp in the C++ Broker component in Apache Qpid before 0.6, as used in Red Hat Enterprise MRG before 1.3 and other products, allows remote authenticated users to cause a denial of service (NULL pointer dereference, daemon crash, and cluster outage) by attempting to modify the alternate of an exchange.

## Which versions are affected by CVE-2009-5006?

It affects 2 products.


Products: Apache Qpid, Redhat Enterprise Mrg.

## How do I fix CVE-2009-5006?

Upgrade to a fixed version.

## Is CVE-2009-5006 being exploited?

There is no known exploitation of CVE-2009-5006 in the wild and no public exploit code.

## Other vulnerabilities in Redhat Enterprise Mrg

- [CVE-2015-0224](https://insights.sbomify.com/CVE-2015-0224/): Denial of service in n/a (high 7.5)
- [CVE-2011-3620](https://insights.sbomify.com/CVE-2011-3620/): Auth bypass in n/a (high 7.5)
- [CVE-2019-0223](https://insights.sbomify.com/CVE-2019-0223/): Security feature bypass in Apache Qpid Proton (high 7.4)
- [CVE-2012-4446](https://insights.sbomify.com/CVE-2012-4446/): Improper Authentication in Apache Qpid (medium 6.8)
- [CVE-2015-0203](https://insights.sbomify.com/CVE-2015-0203/): Denial of service in n/a (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2009-5006 and fix it if it is affected.

What it is: CVE-2009-5006 is a medium-severity vulnerability in Redhat Enterprise Mrg, published on 18 Oct 2010. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2009-5006 in the wild and no public exploit code.

Affected product: Redhat Enterprise Mrg. 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-2009-5006/ (Markdown: https://insights.sbomify.com/CVE-2009-5006/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2009-5006
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2009-5006
- OSV: https://osv.dev/vulnerability/CVE-2009-5006

---
From sbomify Insights: https://insights.sbomify.com/CVE-2009-5006/
Summaries are generated and may contain mistakes; the official description above is the record.