# CVE-2004-0051: Security feature bypass in n/a

> Remote attackers bypass content restrictions in security gateways by using non-standard MIME encoding values that mail clients interpret differently.

- **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:** No
- **Published:** 24 Sep 2004
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-p93x-8676-4q6g

## What is CVE-2004-0051?

CVE-2004-0051 is a high-severity vulnerability in n/a, published on 24 Sep 2004. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Multiple content security gateway and antivirus products allow remote attackers to bypass content restrictions via MIME messages that use non-standard but frequently supported Content-Transfer-Encoding values such as (1) uuencode, (2) mac-binhex40, and (3) yenc, which may be interpreted differently by mail clients.

## Which versions are affected by CVE-2004-0051?

It affects 3 products.


Products: Clearswift Mailsweeper, F-Secure Internet Gatekeeper, Paul L Daniels Ripmime.

## How do I fix CVE-2004-0051?

No fix has been published for CVE-2004-0051 yet. Limit exposure of the affected software until one is available.

## Is CVE-2004-0051 being exploited?

There is no known exploitation of CVE-2004-0051 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2004-0234](https://insights.sbomify.com/CVE-2004-0234/): Memory corruption in n/a (critical 10.0)
- [CVE-2003-1154](https://insights.sbomify.com/CVE-2003-1154/): Security feature bypass in n/a (high 7.5)
- [CVE-2003-1015](https://insights.sbomify.com/CVE-2003-1015/): Security feature bypass in n/a (high 7.5)
- [CVE-2003-1016](https://insights.sbomify.com/CVE-2003-1016/): Security feature bypass in n/a (high 7.5)
- [CVE-2004-0052](https://insights.sbomify.com/CVE-2004-0052/): Security feature bypass in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2004-0051 and fix it if it is affected.

What it is: CVE-2004-0051 is a high-severity vulnerability in n/a, published on 24 Sep 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-2004-0051 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-2004-0051/ (Markdown: https://insights.sbomify.com/CVE-2004-0051/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2004-0051
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2004-0051
- OSV: https://osv.dev/vulnerability/CVE-2004-0051

---
From sbomify Insights: https://insights.sbomify.com/CVE-2004-0051/
Summaries are generated and may contain mistakes; the official description above is the record.