# CVE-2011-0418: Denial of service in n/a

> Remote authenticated users can cause a denial of service via memory consumption in Pure-FTPd due to improper glob expression expansion.

- **Severity:** Medium 4.0 (`AV:N/AC:L/Au:S/C:N/I:N/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 24 May 2011
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2011-0418, GHSA-g8vx-5jmv-rgqx

## What is CVE-2011-0418?

CVE-2011-0418 is a medium-severity denial of service vulnerability in Netbsd Netbsd, published on 24 May 2011. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The glob implementation in Pure-FTPd before 1.0.32, and in libc in NetBSD 5.1, does not properly expand expressions containing curly brackets, which allows remote authenticated users to cause a denial of service (memory consumption) via a crafted FTP STAT command.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2011-0418?

It affects 2 products.


Products: Netbsd Netbsd, Pureftpd Pure-Ftpd.

## How do I fix CVE-2011-0418?

Upgrade to a fixed version.

## Is CVE-2011-0418 being exploited?

There is no known exploitation of CVE-2011-0418 in the wild and no public exploit code.

Public exploit code:

- FreeBSD 9.1 - 'ftpd' Remote Denial of Service (exploitdb)

## Other vulnerabilities in Netbsd Netbsd

- [CVE-2017-1000374](https://insights.sbomify.com/CVE-2017-1000374/): Security feature bypass in n/a (critical 9.8)
- [CVE-2017-1000375](https://insights.sbomify.com/CVE-2017-1000375/): Memory corruption in n/a (critical 9.8)
- [CVE-2017-1000378](https://insights.sbomify.com/CVE-2017-1000378/): Denial of service in n/a (critical 9.8)
- [CVE-2015-8212](https://insights.sbomify.com/CVE-2015-8212/): Command injection in n/a (critical 9.8)
- [CVE-2008-3584](https://insights.sbomify.com/CVE-2008-3584/): Denial of service in n/a (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2011-0418 and fix it if it is affected.

What it is: CVE-2011-0418 is a medium-severity denial of service vulnerability in Netbsd Netbsd, published on 24 May 2011. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2011-0418 in the wild and no public exploit code.

Affected product: Netbsd Netbsd. 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-2011-0418/ (Markdown: https://insights.sbomify.com/CVE-2011-0418/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-0418
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-0418
- OSV: https://osv.dev/vulnerability/CVE-2011-0418

---
From sbomify Insights: https://insights.sbomify.com/CVE-2011-0418/
Summaries are generated and may contain mistakes; the official description above is the record.