# CVE-2000-0305: Denial of service in n/a

> Remote attackers can cause denial of service on Windows systems by sending excessive fragmented IP packets, affecting system availability.

- **Severity:** High 7.8 (`AV:N/AC:L/Au:N/C:N/I:N/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:** 12 Jul 2000
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-7864-p3j4-75vc

## What is CVE-2000-0305?

CVE-2000-0305 is a high-severity denial of service vulnerability in Microsoft Windows 2000, published on 12 Jul 2000. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Windows 95, Windows 98, Windows 2000, Windows NT 4.0, and Terminal Server systems allow a remote attacker to cause a denial of service by sending a large number of identical fragmented IP packets, aka jolt2 or the "IP Fragment Reassembly" vulnerability.

Weakness: CWE-399

## Which versions are affected by CVE-2000-0305?

It affects 6 products.


Products: Be Beos, Microsoft Terminal Server, Microsoft Windows 2000, Microsoft Windows 95, Microsoft Windows 98, Microsoft Windows Nt.

## How do I fix CVE-2000-0305?

No fix has been published for CVE-2000-0305 yet. Limit exposure of the affected software until one is available.

## Is CVE-2000-0305 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2000-0305 exists.

Public exploit code:

- Microsoft Windows - 'Jolt2.c' Denial of Service (MS00-029) (exploitdb)

## Other vulnerabilities in Microsoft Windows 2000

- [CVE-2000-1152](https://insights.sbomify.com/CVE-2000-1152/): Denial of service in n/a (medium 5.0)
- [CVE-2000-0279](https://insights.sbomify.com/CVE-2000-0279/): Denial of service in n/a (medium 5.0)
- [CVE-2000-0463](https://insights.sbomify.com/CVE-2000-0463/): BeOS 5.0 allows remote attackers to cause a denial of service via fragmented TCP packets. (medium 5.0)
- [CVE-2000-0276](https://insights.sbomify.com/CVE-2000-0276/): Denial of service in n/a (low 2.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2000-0305 and fix it if it is affected.

What it is: CVE-2000-0305 is a high-severity denial of service vulnerability in Microsoft Windows 2000, published on 12 Jul 2000. 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-2000-0305 exists.

Affected product: Microsoft Windows 2000. 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-2000-0305/ (Markdown: https://insights.sbomify.com/CVE-2000-0305/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2000-0305
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2000-0305
- OSV: https://osv.dev/vulnerability/CVE-2000-0305

---
From sbomify Insights: https://insights.sbomify.com/CVE-2000-0305/
Summaries are generated and may contain mistakes; the official description above is the record.