# CVE-1999-1254: Denial of service in n/a

> Remote attackers can cause denial of service on Windows systems by spoofing ICMP redirect messages to alter routing tables.

- **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:** 12 Sep 2001
- **Updated:** 1 Aug 2024
- **Also known as:** GHSA-72gc-hjc8-g277

## What is CVE-1999-1254?

CVE-1999-1254 is a medium-severity denial of service vulnerability in Microsoft Windows 98, published on 12 Sep 2001. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Windows 95, 98, and NT 4.0 allow remote attackers to cause a denial of service by spoofing ICMP redirect messages from a router, which causes Windows to change its routing tables.

## Which versions are affected by CVE-1999-1254?

It affects 3 products.


Products: Microsoft Windows 95, Microsoft Windows 98, Microsoft Windows Nt.

## How do I fix CVE-1999-1254?

No fix has been published for CVE-1999-1254 yet. Limit exposure of the affected software until one is available.

## Is CVE-1999-1254 being exploited?

There is no known exploitation of CVE-1999-1254 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Windows 98

- [CVE-1999-0387](https://insights.sbomify.com/CVE-1999-0387/): Information disclosure in n/a (high 7.8)
- [CVE-2000-0330](https://insights.sbomify.com/CVE-2000-0330/): Memory corruption in n/a (high 7.6)
- [CVE-1999-0518](https://insights.sbomify.com/CVE-1999-0518/): Weak cryptography in n/a (high 7.5)
- [CVE-2000-0155](https://insights.sbomify.com/CVE-2000-0155/): Code injection in n/a (high 7.2)
- [CVE-2000-0979](https://insights.sbomify.com/CVE-2000-0979/): Auth bypass in n/a (medium 6.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-1999-1254 and fix it if it is affected.

What it is: CVE-1999-1254 is a medium-severity denial of service vulnerability in Microsoft Windows 98, published on 12 Sep 2001. 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-1999-1254 in the wild and no public exploit code.

Affected product: Microsoft Windows 98. 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-1999-1254/ (Markdown: https://insights.sbomify.com/CVE-1999-1254/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-1999-1254
- NVD: https://nvd.nist.gov/vuln/detail/CVE-1999-1254
- OSV: https://osv.dev/vulnerability/CVE-1999-1254

---
From sbomify Insights: https://insights.sbomify.com/CVE-1999-1254/
Summaries are generated and may contain mistakes; the official description above is the record.