# CVE-2004-0083: Memory corruption in n/a

> Remote attackers can execute arbitrary code via a malicious font alias file due to a buffer overflow in XFree86.

- **Severity:** Critical 10.0 (`AV:N/AC:L/Au:N/C:C/I:C/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 14 Feb 2004
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-275v-77j5-j2rj

## What is CVE-2004-0083?

CVE-2004-0083 is a critical memory corruption vulnerability in Openbsd Openbsd, published on 14 Feb 2004. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Buffer overflow in ReadFontAlias from dirfile.c of XFree86 4.1.0 through 4.3.0 allows local users and remote attackers to execute arbitrary code via a font alias file (font.alias) with a long token, a different vulnerability than CVE-2004-0084 and CVE-2004-0106.

## Which versions are affected by CVE-2004-0083?

It affects 2 products.


Products: Openbsd Openbsd, Xfree86 Project X11r6.

## How do I fix CVE-2004-0083?

Apply the vendor's patch.

## Is CVE-2004-0083 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2004-0083 exists.

Public exploit code:

- XFree86 4.3 - Font Information File Buffer Overflow (exploitdb)

## Other vulnerabilities in Openbsd Openbsd

- [CVE-2007-1365](https://insights.sbomify.com/CVE-2007-1365/): Memory corruption in n/a (critical 10.0)
- [CVE-2004-0220](https://insights.sbomify.com/CVE-2004-0220/): Integer overflow in n/a (critical 10.0)
- [CVE-2004-0084](https://insights.sbomify.com/CVE-2004-0084/): Memory corruption in n/a (critical 10.0)
- [CVE-2001-0284](https://insights.sbomify.com/CVE-2001-0284/): Memory corruption in n/a (critical 10.0)
- [CVE-2000-1010](https://insights.sbomify.com/CVE-2000-1010/): Memory corruption in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2004-0083 and fix it if it is affected.

What it is: CVE-2004-0083 is a critical memory corruption vulnerability in Openbsd Openbsd, published on 14 Feb 2004. 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-2004-0083 exists.

Affected product: Openbsd Openbsd. 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-2004-0083/ (Markdown: https://insights.sbomify.com/CVE-2004-0083/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2004-0083
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2004-0083
- OSV: https://osv.dev/vulnerability/CVE-2004-0083

---
From sbomify Insights: https://insights.sbomify.com/CVE-2004-0083/
Summaries are generated and may contain mistakes; the official description above is the record.