# CVE-2001-0766: Security feature bypass in n/a

> Remote attackers can bypass Apache access restrictions on MacOS X by exploiting case-insensitive HFS+ file system behavior in URL filtering.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Oct 2001
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-3vgv-pgwc-8f57

## What is CVE-2001-0766?

CVE-2001-0766 is a critical vulnerability in Apache Http Server, published on 12 Oct 2001. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Apache on MacOS X Client 10.0.3 with the HFS+ file system allows remote attackers to bypass access restrictions via a URL that contains some characters whose case is not matched by Apache's filters.

Weakness: CWE-178 (Improper Handling of Case Sensitivity)

## Which versions are affected by CVE-2001-0766?

It affects 1 product.


Products: Apache Http Server.

## How do I fix CVE-2001-0766?

No fix has been published for CVE-2001-0766 yet. Limit exposure of the affected software until one is available.

## Is CVE-2001-0766 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2001-0766 exists.

Public exploit code:

- Apache 1.3.14 - Mac File Protection Bypass (exploitdb)

## Other vulnerabilities in Apache Http Server

- [CVE-2021-42013](https://insights.sbomify.com/CVE-2021-42013/): Apache HTTP Server Path Traversal (critical 9.8, exploited in the wild)
- [CVE-2024-38475](https://insights.sbomify.com/CVE-2024-38475/): Apache HTTP Server Improper Escaping of Output (critical 9.1, exploited in the wild)
- [CVE-2021-40438](https://insights.sbomify.com/CVE-2021-40438/): Apache HTTP Server-Side Request Forgery (SSRF) (critical 9.0, exploited in the wild)
- [CVE-2019-0211](https://insights.sbomify.com/CVE-2019-0211/): Apache HTTP Server Privilege Escalation (high 7.8, exploited in the wild)
- [CVE-2021-41773](https://insights.sbomify.com/CVE-2021-41773/): Apache HTTP Server Path Traversal (high 7.5, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2001-0766 and fix it if it is affected.

What it is: CVE-2001-0766 is a critical vulnerability in Apache Http Server, published on 12 Oct 2001. 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-2001-0766 exists.

Affected product: Apache Http 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-2001-0766/ (Markdown: https://insights.sbomify.com/CVE-2001-0766/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2001-0766
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2001-0766
- OSV: https://osv.dev/vulnerability/CVE-2001-0766

---
From sbomify Insights: https://insights.sbomify.com/CVE-2001-0766/
Summaries are generated and may contain mistakes; the official description above is the record.