# CVE-2002-0830: Denial of service in n/a

> Remote attackers can cause a denial of service in FreeBSD and NetBSD NFS servers by sending RPC messages with zero-length payloads, leading to infinite loops.

- **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:** 2 Apr 2003
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-c42h-m4fp-v446

## What is CVE-2002-0830?

CVE-2002-0830 is a medium-severity denial of service vulnerability in Freebsd Freebsd, published on 2 Apr 2003. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Network File System (NFS) in FreeBSD 4.6.1 RELEASE-p7 and earlier, NetBSD 1.5.3 and earlier, and possibly other operating systems, allows remote attackers to cause a denial of service (hang) via an RPC message with a zero length payload, which causes NFS to reference a previous payload and enter an infinite loop.

## Which versions are affected by CVE-2002-0830?

It affects 1 product.


Products: Freebsd Freebsd.

## How do I fix CVE-2002-0830?

No fix has been published for CVE-2002-0830 yet. Limit exposure of the affected software until one is available.

## Is CVE-2002-0830 being exploited?

There is no known exploitation of CVE-2002-0830 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-2002-0830 and fix it if it is affected.

What it is: CVE-2002-0830 is a medium-severity denial of service vulnerability in Freebsd Freebsd, published on 2 Apr 2003. 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-2002-0830 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-2002-0830/ (Markdown: https://insights.sbomify.com/CVE-2002-0830/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2002-0830
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2002-0830
- OSV: https://osv.dev/vulnerability/CVE-2002-0830

---
From sbomify Insights: https://insights.sbomify.com/CVE-2002-0830/
Summaries are generated and may contain mistakes; the official description above is the record.