# CVE-2004-0390: Auth bypass in n/a

> Remote attackers can bypass X session access controls in SCO OpenServer by using non-scologin login methods, gaining unauthorized access.

- **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:** 14 Apr 2005
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-w27r-2xr6-37p7

## What is CVE-2004-0390?

CVE-2004-0390 is a high-severity authentication bypass vulnerability in Sco Openserver, published on 14 Apr 2005. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

SCO OpenServer 5.0.5 through 5.0.7 only supports Xauthority style access control when users log in using scologin, which allows remote attackers to gain unauthorized access to an X session via other X login methods.

## Which versions are affected by CVE-2004-0390?

It affects 1 product.


Products: Sco Openserver.

## How do I fix CVE-2004-0390?

No fix has been published for CVE-2004-0390 yet. Limit exposure of the affected software until one is available.

## Is CVE-2004-0390 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2004-0390 exists.

Public exploit code:

- SCO OpenServer 5.0.x - StartX Weak XHost Permissions (exploitdb)

## Other vulnerabilities in Sco Openserver

- [CVE-2000-0306](https://insights.sbomify.com/CVE-2000-0306/): Memory corruption in n/a (critical 10.0)
- [CVE-2006-0072](https://insights.sbomify.com/CVE-2006-0072/): Buffer overflow in termsh on SCO OpenServer 5.0.7 allows remote attackers to execute arbitrary code via a long -o command line argument. (high 7.5)
- [CVE-1999-1450](https://insights.sbomify.com/CVE-1999-1450/): Privilege escalation in n/a (high 7.5)
- [CVE-2001-0579](https://insights.sbomify.com/CVE-2001-0579/): Memory corruption in n/a (high 7.5)
- [CVE-2000-0158](https://insights.sbomify.com/CVE-2000-0158/): Memory corruption in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2004-0390 and fix it if it is affected.

What it is: CVE-2004-0390 is a high-severity authentication bypass vulnerability in Sco Openserver, published on 14 Apr 2005. 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-2004-0390 exists.

Affected product: Sco Openserver. 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-2004-0390/ (Markdown: https://insights.sbomify.com/CVE-2004-0390/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2004-0390
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2004-0390
- OSV: https://osv.dev/vulnerability/CVE-2004-0390

---
From sbomify Insights: https://insights.sbomify.com/CVE-2004-0390/
Summaries are generated and may contain mistakes; the official description above is the record.