# CVE-1999-0513: Denial of service in n/a

> Attackers can launch Smurf attacks causing denial of service by sending ICMP messages to broadcast addresses.

- **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:** 29 Sep 1999
- **Updated:** 1 Aug 2024
- **Also known as:** GHSA-q2cm-72c7-798h

## What is CVE-1999-0513?

CVE-1999-0513 is a medium-severity denial of service vulnerability in Freebsd Freebsd, published on 29 Sep 1999. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

ICMP messages to broadcast addresses are allowed, allowing for a Smurf attack that can cause a denial of service.

## Which versions are affected by CVE-1999-0513?

It affects 8 products.


Products: Digital Unix, Freebsd Freebsd, Hp Hp-Ux, Ibm Aix, Linux kernel, Netbsd Netbsd, Sun Solaris, Sun Sunos.

## How do I fix CVE-1999-0513?

No fix has been published for CVE-1999-0513 yet. Limit exposure of the affected software until one is available.

## Is CVE-1999-0513 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-1999-0513 exists.

Public exploit code:

- Linux Kernel 2.0/2.1 (Digital UNIX 4.0 D / FreeBSD 2.2.4 / HP HP-UX 10.20/11.0 / IBM AIX 3.2.5 / NetBSD 1.2 / Solaris 2.5.1) - Smurf Denial of Service (exploitdb)

## Other vulnerabilities in Freebsd Freebsd

- [CVE-1999-1210](https://insights.sbomify.com/CVE-1999-1210/): Path traversal in n/a (high 7.2)
- [CVE-1999-1458](https://insights.sbomify.com/CVE-1999-1458/): Memory corruption in n/a (high 7.2)
- [CVE-2001-0369](https://insights.sbomify.com/CVE-2001-0369/): Memory corruption in n/a (high 7.2)
- [CVE-1999-0358](https://insights.sbomify.com/CVE-1999-0358/): Memory corruption in n/a (high 7.2)
- [CVE-1999-0406](https://insights.sbomify.com/CVE-1999-0406/): Memory corruption in n/a (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-1999-0513 and fix it if it is affected.

What it is: CVE-1999-0513 is a medium-severity denial of service vulnerability in Freebsd Freebsd, published on 29 Sep 1999. 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-1999-0513 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-1999-0513/ (Markdown: https://insights.sbomify.com/CVE-1999-0513/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-1999-0513
- NVD: https://nvd.nist.gov/vuln/detail/CVE-1999-0513
- OSV: https://osv.dev/vulnerability/CVE-1999-0513

---
From sbomify Insights: https://insights.sbomify.com/CVE-1999-0513/
Summaries are generated and may contain mistakes; the official description above is the record.