# CVE-2002-0072: Null dereference in n/a

> Remote attackers can crash IIS servers by sending long URLs to the Front Page Server Extensions ISAPI filter, causing a null pointer dereference.

- **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-84f6-4j88-6cvc

## What is CVE-2002-0072?

CVE-2002-0072 is a medium-severity vulnerability in Microsoft Internet Information Server, published on 2 Apr 2003. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The w3svc.dll ISAPI filter in Front Page Server Extensions and ASP.NET for Internet Information Server (IIS) 4.0, 5.0, and 5.1 does not properly handle the error condition when a long URL is provided, which allows remote attackers to cause a denial of service (crash) when the URL parser accesses a null pointer.

## Which versions are affected by CVE-2002-0072?

It affects 2 products.


Products: Microsoft Internet Information Server, Microsoft Internet Information Services.

## How do I fix CVE-2002-0072?

No fix has been published for CVE-2002-0072 yet. Limit exposure of the affected software until one is available.

## Is CVE-2002-0072 being exploited?

There is no known exploitation of CVE-2002-0072 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Internet Information Server

- [CVE-2008-0075](https://insights.sbomify.com/CVE-2008-0075/): Code injection in n/a (critical 10.0)
- [CVE-1999-1376](https://insights.sbomify.com/CVE-1999-1376/): Buffer overflow in fpcount.exe in IIS 4.0 with FrontPage Server Extensions allows remote attackers to execute arbitrary commands. (critical 10.0)
- [CVE-1999-0407](https://insights.sbomify.com/CVE-1999-0407/): By default, IIS 4.0 has a virtual directory /IISADMPWD which contains files that can be used as proxies for brute force password attacks, or (critical 10.0)
- [CVE-1999-0874](https://insights.sbomify.com/CVE-1999-0874/): Memory corruption in n/a (critical 10.0)
- [CVE-2009-3023](https://insights.sbomify.com/CVE-2009-3023/): Memory corruption in n/a (critical 9.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2002-0072 and fix it if it is affected.

What it is: CVE-2002-0072 is a medium-severity vulnerability in Microsoft Internet Information Server, 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-2002-0072 in the wild and no public exploit code.

Affected product: Microsoft Internet Information Server. 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-2002-0072/ (Markdown: https://insights.sbomify.com/CVE-2002-0072/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2002-0072
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2002-0072
- OSV: https://osv.dev/vulnerability/CVE-2002-0072

---
From sbomify Insights: https://insights.sbomify.com/CVE-2002-0072/
Summaries are generated and may contain mistakes; the official description above is the record.