# CVE-2011-1872: Denial of service in n/a

> Guest OS users can cause a host OS denial of service via malformed VMBus packets in Microsoft Windows Server Hyper-V.

- **Severity:** Medium 4.7 (`AV:L/AC:M/Au:N/C:N/I:N/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Jun 2011
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-w37q-mj57-9rm2

## What is CVE-2011-1872?

CVE-2011-1872 is a medium-severity denial of service vulnerability in Microsoft Windows Server 2008, published on 16 Jun 2011. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Hyper-V in Microsoft Windows Server 2008 Gold, SP2, R2, and R2 SP1 allows guest OS users to cause a denial of service (host OS infinite loop) via malformed machine instructions in a VMBus packet, aka "VMBus Persistent DoS Vulnerability."

Weakness: CWE-399

## Which versions are affected by CVE-2011-1872?

It affects 1 product.


Products: Microsoft Windows Server 2008.

## How do I fix CVE-2011-1872?

No fix has been published for CVE-2011-1872 yet. Limit exposure of the affected software until one is available.

## Is CVE-2011-1872 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2011-1872 exists.

Public exploit code:

- Microsoft HyperV - Persistent Denial of Service (MS11-047) (exploitdb)

## Other vulnerabilities in Microsoft Windows Server 2008

- [CVE-2020-1350](https://insights.sbomify.com/CVE-2020-1350/): Microsoft Windows DNS Server Remote Code Execution (critical 10.0, exploited in the wild)
- [CVE-2020-1040](https://insights.sbomify.com/CVE-2020-1040/): Microsoft Hyper-V RemoteFX vGPU Remote Code Execution (critical 9.0, exploited in the wild)
- [CVE-2011-1966](https://insights.sbomify.com/CVE-2011-1966/): Memory corruption in n/a (critical 10.0)
- [CVE-2010-0239](https://insights.sbomify.com/CVE-2010-0239/): Memory corruption in n/a (critical 10.0)
- [CVE-2010-0240](https://insights.sbomify.com/CVE-2010-0240/): Code injection in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2011-1872 and fix it if it is affected.

What it is: CVE-2011-1872 is a medium-severity denial of service vulnerability in Microsoft Windows Server 2008, published on 16 Jun 2011. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2011-1872 exists.

Affected product: Microsoft Windows Server 2008. 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-2011-1872/ (Markdown: https://insights.sbomify.com/CVE-2011-1872/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-1872
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-1872
- OSV: https://osv.dev/vulnerability/CVE-2011-1872

---
From sbomify Insights: https://insights.sbomify.com/CVE-2011-1872/
Summaries are generated and may contain mistakes; the official description above is the record.