# CVE-2001-0247: Memory corruption in n/a

> Remote attackers can execute arbitrary commands on BSD-based FTP servers via buffer overflows in glob functions.

- **Severity:** Critical 10.0 (`AV:N/AC:L/Au:N/C:C/I:C/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 May 2001
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-vqvf-p27x-f5rq

## What is CVE-2001-0247?

CVE-2001-0247 is a critical memory corruption vulnerability in Freebsd Freebsd, published on 24 May 2001. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Buffer overflows in BSD-based FTP servers allows remote attackers to execute arbitrary commands via a long pattern string containing a {} sequence, as seen in (1) g_opendir, (2) g_lstat, (3) g_stat, and (4) the glob0 buffer as used in the glob functions glob2 and glob3.

## Which versions are affected by CVE-2001-0247?

It affects 5 products.


Products: Freebsd Freebsd, Mit Kerberos 5, Netbsd Netbsd, Openbsd Openbsd, Sgi Irix.

## How do I fix CVE-2001-0247?

No fix has been published for CVE-2001-0247 yet. Limit exposure of the affected software until one is available.

## Is CVE-2001-0247 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2001-0247 exists.

Public exploit code:

- FreeBSD 2.2-4.2 / NetBSD 1.2-4.5 / OpenBSD 2.x - FTPd 'glob()' Remote Buffer Overflow (exploitdb)
- FreeBSD 4.2-stable - FTPd 'glob()' Remote Buffer Overflow (exploitdb)
- OpenBSD 2.x < 2.8 FTPd - 'glob()' Remote Buffer Overflow (exploitdb)

## 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-2001-0247 and fix it if it is affected.

What it is: CVE-2001-0247 is a critical memory corruption vulnerability in Freebsd Freebsd, published on 24 May 2001. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2001-0247 exists.

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-2001-0247/ (Markdown: https://insights.sbomify.com/CVE-2001-0247/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2001-0247
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2001-0247
- OSV: https://osv.dev/vulnerability/CVE-2001-0247

---
From sbomify Insights: https://insights.sbomify.com/CVE-2001-0247/
Summaries are generated and may contain mistakes; the official description above is the record.