# CVE-2000-0770: Path traversal in n/a

> Remote attackers can bypass file access restrictions in Microsoft IIS to read protected files due to improper permission canonicalization.

- **Severity:** Medium 6.4 (`AV:N/AC:L/Au:N/C:P/I:P/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:** 13 Oct 2000
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-8wcg-8pwm-v3gc

## What is CVE-2000-0770?

CVE-2000-0770 is a medium-severity path traversal vulnerability in Microsoft Internet Information Server, published on 13 Oct 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 restrict access to certain types of files when their parent folders have less restrictive permissions, which could allow remote attackers to bypass access restrictions to some files, aka the "File Permission Canonicalization" vulnerability.

## Which versions are affected by CVE-2000-0770?

It affects 2 products.


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

## How do I fix CVE-2000-0770?

No fix has been published for CVE-2000-0770 yet. Limit exposure of the affected software until one is available.

## Is CVE-2000-0770 being exploited?

There is no known exploitation of CVE-2000-0770 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-2000-0770 and fix it if it is affected.

What it is: CVE-2000-0770 is a medium-severity path traversal vulnerability in Microsoft Internet Information Server, published on 13 Oct 2000. 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-2000-0770 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-2000-0770/ (Markdown: https://insights.sbomify.com/CVE-2000-0770/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2000-0770
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2000-0770
- OSV: https://osv.dev/vulnerability/CVE-2000-0770

---
From sbomify Insights: https://insights.sbomify.com/CVE-2000-0770/
Summaries are generated and may contain mistakes; the official description above is the record.