# CVE-2004-0601: Auth bypass in n/a

> Remote attackers can bypass IP-based access control restrictions in distcc on 64-bit platforms, allowing unauthorized access to the compiler service.

- **Severity:** High 7.5 (`AV:N/AC:L/Au:N/C:P/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 19 Nov 2004
- **Updated:** 8 Aug 2024
- **Also known as:** DEBIAN-CVE-2004-0601, GHSA-vxrm-mh87-53gf

## What is CVE-2004-0601?

CVE-2004-0601 is a high-severity authentication bypass vulnerability in n/a, published on 19 Nov 2004. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

distcc before 2.16, when running on 64-bit platforms, does not interpret IP-based access control rules correctly, which could allow remote attackers to bypass intended restrictions.

## Which versions are affected by CVE-2004-0601?

It affects 1 product.


Products: Distcc Distcc.

## How do I fix CVE-2004-0601?

Upgrade to a fixed version.

## Is CVE-2004-0601 being exploited?

There is no known exploitation of CVE-2004-0601 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2004-0601 and fix it if it is affected.

What it is: CVE-2004-0601 is a high-severity authentication bypass vulnerability in n/a, published on 19 Nov 2004. 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-2004-0601 in the wild and no public exploit code.

Affected product: n/a. 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-2004-0601/ (Markdown: https://insights.sbomify.com/CVE-2004-0601/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2004-0601
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2004-0601
- OSV: https://osv.dev/vulnerability/CVE-2004-0601

---
From sbomify Insights: https://insights.sbomify.com/CVE-2004-0601/
Summaries are generated and may contain mistakes; the official description above is the record.