# CVE-2013-3266: Memory corruption in n/a

> Remote attackers can cause denial of service or execute arbitrary code by sending malformed READDIR requests to the FreeBSD NFS server.

- **Severity:** High 7.5 (`AV:N/AC:L/Au:N/C:P/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 2 May 2013
- **Updated:** 6 Aug 2024
- **Also known as:** DSA-2672-1, GHSA-gqq9-pr3g-6jr8

## What is CVE-2013-3266?

CVE-2013-3266 is a high-severity memory corruption vulnerability in Freebsd Freebsd, published on 2 May 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The nfsrvd_readdir function in sys/fs/nfsserver/nfs_nfsdport.c in the new NFS server in FreeBSD 8.0 through 9.1-RELEASE-p3 does not verify that a READDIR request is for a directory node, which allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code by specifying a plain file instead of a directory.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2013-3266?

It affects 1 product.


Products: Freebsd Freebsd.

## How do I fix CVE-2013-3266?

Apply the vendor's patch.

## Is CVE-2013-3266 being exploited?

There is no known exploitation of CVE-2013-3266 in the wild and no public exploit code.

## Other vulnerabilities in Freebsd Freebsd

- [CVE-2018-17160](https://insights.sbomify.com/CVE-2018-17160/): Memory corruption in FreeBSD (critical 10.0)
- [CVE-2014-3954](https://insights.sbomify.com/CVE-2014-3954/): Memory corruption in n/a (critical 10.0)
- [CVE-2006-4304](https://insights.sbomify.com/CVE-2006-4304/): Memory corruption in n/a (critical 10.0)
- [CVE-2006-0226](https://insights.sbomify.com/CVE-2006-0226/): Integer overflow in n/a (critical 10.0)
- [CVE-2004-0002](https://insights.sbomify.com/CVE-2004-0002/): Denial of service in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2013-3266 and fix it if it is affected.

What it is: CVE-2013-3266 is a high-severity memory corruption vulnerability in Freebsd Freebsd, published on 2 May 2013. 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-2013-3266 in the wild and no public exploit code.

Affected product: Freebsd Freebsd. 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-2013-3266/ (Markdown: https://insights.sbomify.com/CVE-2013-3266/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2013-3266
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2013-3266
- OSV: https://osv.dev/vulnerability/CVE-2013-3266

---
From sbomify Insights: https://insights.sbomify.com/CVE-2013-3266/
Summaries are generated and may contain mistakes; the official description above is the record.