# CVE-2006-5861: Null dereference in n/a

> Remote attackers can crash the Citrix IMA service by sending a crafted packet that triggers an unhandled exception via unmapped memory access.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:N/I:N/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:** 10 Nov 2006
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-wfw3-5vj5-32f2

## What is CVE-2006-5861?

CVE-2006-5861 is a medium-severity vulnerability in n/a, published on 10 Nov 2006. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Independent Management Architecture (IMA) service (ImaSrv.exe) in Citrix MetaFrame XP 1.0 and 2.0, and Presentation Server 3.0 and 4.0, allows remote attackers to cause a denial of service (service exit) via a crafted packet that causes the service to access an unmapped memory address and triggers an unhandled exception.

## Which versions are affected by CVE-2006-5861?

It affects 2 products.


Products: Citrix Metaframe, Citrix Metaframe Presentation Server.

## How do I fix CVE-2006-5861?

No fix has been published for CVE-2006-5861 yet. Limit exposure of the affected software until one is available.

## Is CVE-2006-5861 being exploited?

There is no known exploitation of CVE-2006-5861 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2000-0244](https://insights.sbomify.com/CVE-2000-0244/): Weak cryptography in n/a (critical 10.0)
- [CVE-2006-5821](https://insights.sbomify.com/CVE-2006-5821/): Memory corruption in n/a (high 7.5)
- [CVE-2005-3134](https://insights.sbomify.com/CVE-2005-3134/): Security feature bypass in n/a (high 7.5)
- [CVE-2001-0908](https://insights.sbomify.com/CVE-2001-0908/): Information disclosure in n/a (high 7.5)
- [CVE-2007-0444](https://insights.sbomify.com/CVE-2007-0444/): Memory corruption in n/a (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2006-5861 and fix it if it is affected.

What it is: CVE-2006-5861 is a medium-severity vulnerability in n/a, published on 10 Nov 2006. 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-2006-5861 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-2006-5861/ (Markdown: https://insights.sbomify.com/CVE-2006-5861/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2006-5861
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2006-5861
- OSV: https://osv.dev/vulnerability/CVE-2006-5861

---
From sbomify Insights: https://insights.sbomify.com/CVE-2006-5861/
Summaries are generated and may contain mistakes; the official description above is the record.