# CVE-2013-2239: Information disclosure in n/a

> Local attackers can read sensitive kernel stack memory via crafted ioctl or system calls in OpenVZ kernels, exposing confidential data.

- **Severity:** Medium 4.7 (`AV:L/AC:M/Au:N/C:C/I:N/A:N`)
- **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:** Yes
- **Published:** 12 Nov 2013
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-46pj-qvxv-8vwg

## What is CVE-2013-2239?

CVE-2013-2239 is a medium-severity vulnerability in n/a, published on 12 Nov 2013. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

vzkernel before 042stab080.2 in the OpenVZ modification for the Linux kernel 2.6.32 does not initialize certain length variables, which allows local users to obtain sensitive information from kernel stack memory via (1) a crafted ploop driver ioctl call, related to the ploop_getdevice_ioc function in drivers/block/ploop/dev.c, or (2) a crafted quotactl system call, related to the compat_quotactl function in fs/quota/quota.c.

Weakness: CWE-264

## Which versions are affected by CVE-2013-2239?

It affects 1 product.


Products: Openvz Vzkernel.

## How do I fix CVE-2013-2239?

Upgrade to a fixed version.

## Is CVE-2013-2239 being exploited?

There is no known exploitation of CVE-2013-2239 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2014-3519](https://insights.sbomify.com/CVE-2014-3519/): Security feature bypass in n/a (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2013-2239 and fix it if it is affected.

What it is: CVE-2013-2239 is a medium-severity vulnerability in n/a, published on 12 Nov 2013. 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-2013-2239 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-2013-2239/ (Markdown: https://insights.sbomify.com/CVE-2013-2239/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2013-2239
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2013-2239
- OSV: https://osv.dev/vulnerability/CVE-2013-2239

---
From sbomify Insights: https://insights.sbomify.com/CVE-2013-2239/
Summaries are generated and may contain mistakes; the official description above is the record.