# CVE-2000-0246: Information disclosure in n/a

> Remote attackers can read source code of ASP files if IIS virtual directories are mapped to UNC shares, exposing sensitive application logic.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:P/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Jun 2000
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-2h2p-h37h-5phg

## What is CVE-2000-0246?

CVE-2000-0246 is a medium-severity vulnerability in Microsoft Internet Information Server, published on 2 Jun 2000. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

IIS 4.0 and 5.0 does not properly perform ISAPI extension processing if a virtual directory is mapped to a UNC share, which allows remote attackers to read the source code of ASP and other files, aka the "Virtualized UNC Share" vulnerability.

## Which versions are affected by CVE-2000-0246?

It affects 6 products.


Products: Microsoft Commercial Internet System, Microsoft Internet Information Server, Microsoft Internet Information Services, Microsoft Proxy Server, Microsoft Site Server, Microsoft Site Server Commerce.

## How do I fix CVE-2000-0246?

No fix has been published for CVE-2000-0246 yet. Limit exposure of the affected software until one is available.

## Is CVE-2000-0246 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2000-0246 exists.

Public exploit code:

- Microsoft IIS 4.0 - UNC Mapped Virtual Host (exploitdb)

## Other vulnerabilities in Microsoft Internet Information Server

- [CVE-2000-0053](https://insights.sbomify.com/CVE-2000-0053/): Denial of service in n/a (high 7.5)
- [CVE-1999-0777](https://insights.sbomify.com/CVE-1999-0777/): Missing authorization in n/a (high 7.5)
- [CVE-1999-0910](https://insights.sbomify.com/CVE-1999-0910/): Information disclosure in n/a (medium 5.0)
- [CVE-1999-0867](https://insights.sbomify.com/CVE-1999-0867/): Denial of service in n/a (medium 5.0)
- [CVE-1999-0861](https://insights.sbomify.com/CVE-1999-0861/): Race condition in n/a (low 2.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2000-0246 and fix it if it is affected.

What it is: CVE-2000-0246 is a medium-severity vulnerability in Microsoft Internet Information Server, published on 2 Jun 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-2000-0246 exists.

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-2000-0246/ (Markdown: https://insights.sbomify.com/CVE-2000-0246/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2000-0246
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2000-0246
- OSV: https://osv.dev/vulnerability/CVE-2000-0246

---
From sbomify Insights: https://insights.sbomify.com/CVE-2000-0246/
Summaries are generated and may contain mistakes; the official description above is the record.