# CVE-2001-0136: Denial of service in n/a

> Remote attackers can cause a denial of service in ProFTPd by sending a series of USER commands, leading to memory exhaustion.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:N/I:N/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Sep 2001
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-f684-qh6c-rp3v

## What is CVE-2001-0136?

CVE-2001-0136 is a medium-severity denial of service vulnerability in Conectiva Linux, published on 18 Sep 2001. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Memory leak in ProFTPd 1.2.0rc2 allows remote attackers to cause a denial of service via a series of USER commands, and possibly SIZE commands if the server has been improperly installed.

Weakness: CWE-401 (Missing Release of Memory after Effective Lifetime)

## Which versions are affected by CVE-2001-0136?

It affects 4 products.


Products: Conectiva Linux, Debian Debian Linux, Mandrakesoft Mandrake Linux, Proftpd Proftpd.

## How do I fix CVE-2001-0136?

No fix has been published for CVE-2001-0136 yet. Limit exposure of the affected software until one is available.

## Is CVE-2001-0136 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2001-0136 exists.

Public exploit code:

- ProFTPd 1.2 - 'SIZE' Remote Denial of Service (exploitdb)
- ProFTPd 1.2.0 rc2 - Memory Leakage (exploitdb)
- ProFTPd 1.2.0 pre10 - Remote Denial of Service (exploitdb)

## Other vulnerabilities in Conectiva Linux

- [CVE-2005-3625](https://insights.sbomify.com/CVE-2005-3625/): Denial of service in n/a (critical 10.0)
- [CVE-2004-0882](https://insights.sbomify.com/CVE-2004-0882/): Memory corruption in n/a (critical 10.0)
- [CVE-2004-0902](https://insights.sbomify.com/CVE-2004-0902/): Memory corruption in n/a (critical 10.0)
- [CVE-2004-0903](https://insights.sbomify.com/CVE-2004-0903/): Memory corruption in n/a (critical 10.0)
- [CVE-2004-0904](https://insights.sbomify.com/CVE-2004-0904/): Integer overflow in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2001-0136 and fix it if it is affected.

What it is: CVE-2001-0136 is a medium-severity denial of service vulnerability in Conectiva Linux, published on 18 Sep 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-2001-0136 exists.

Affected product: Conectiva Linux. 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-2001-0136/ (Markdown: https://insights.sbomify.com/CVE-2001-0136/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2001-0136
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2001-0136
- OSV: https://osv.dev/vulnerability/CVE-2001-0136

---
From sbomify Insights: https://insights.sbomify.com/CVE-2001-0136/
Summaries are generated and may contain mistakes; the official description above is the record.