# CVE-2012-6333: Denial of service in n/a

> Local HVM guest administrators can cause a denial of service by consuming physical CPU resources via large inputs in Xen hypervisor.

- **Severity:** Medium 4.7 (`AV:L/AC:M/Au:N/C:N/I:N/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 13 Dec 2012
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2012-6333, GHSA-32g2-hc9h-69wc

## What is CVE-2012-6333?

CVE-2012-6333 is a medium-severity denial of service vulnerability in Xen Xen, published on 13 Dec 2012. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Multiple HVM control operations in Xen 3.4 through 4.2 allow local HVM guest OS administrators to cause a denial of service (physical CPU consumption) via a large input.

Weakness: CWE-399

## Which versions are affected by CVE-2012-6333?

It affects 1 product.


Products: Xen Xen.

## How do I fix CVE-2012-6333?

Apply the vendor's patch.

## Is CVE-2012-6333 being exploited?

There is no known exploitation of CVE-2012-6333 in the wild and no public exploit code.

## Other vulnerabilities in Xen Xen

- [CVE-2017-10912](https://insights.sbomify.com/CVE-2017-10912/): Privilege escalation in n/a (critical 10.0)
- [CVE-2017-10918](https://insights.sbomify.com/CVE-2017-10918/): Memory corruption in n/a (critical 10.0)
- [CVE-2017-10920](https://insights.sbomify.com/CVE-2017-10920/): Memory corruption in n/a (critical 10.0)
- [CVE-2017-10921](https://insights.sbomify.com/CVE-2017-10921/): Memory corruption in n/a (critical 10.0)
- [CVE-2025-27466](https://insights.sbomify.com/CVE-2025-27466/): Mutiple vulnerabilities in the Viridian interface (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2012-6333 and fix it if it is affected.

What it is: CVE-2012-6333 is a medium-severity denial of service vulnerability in Xen Xen, published on 13 Dec 2012. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2012-6333 in the wild and no public exploit code.

Affected product: Xen Xen. 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-2012-6333/ (Markdown: https://insights.sbomify.com/CVE-2012-6333/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2012-6333
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2012-6333
- OSV: https://osv.dev/vulnerability/CVE-2012-6333

---
From sbomify Insights: https://insights.sbomify.com/CVE-2012-6333/
Summaries are generated and may contain mistakes; the official description above is the record.