# CVE-2013-5667: Command injection in n/a

> Remote attackers can execute arbitrary commands on Thecus NAS servers via shell metacharacters in the username parameter of the get_userid action.

- **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:** No
- **Published:** 24 Jan 2014
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-85fw-hhrw-fr33

## What is CVE-2013-5667?

CVE-2013-5667 is a critical command injection vulnerability in n/a, published on 24 Jan 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Thecus NAS server N8800 with firmware 5.03.01 allows remote attackers to execute arbitrary commands via a get_userid action with shell metacharacters in the username parameter.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2013-5667?

It affects 2 products.


Products: Thecus N8800 Nas Server, Thecus N8800 Nas Server Firmware.

## How do I fix CVE-2013-5667?

No fix has been published for CVE-2013-5667 yet. Limit exposure of the affected software until one is available.

## Is CVE-2013-5667 being exploited?

There is no known exploitation of CVE-2013-5667 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2013-5668](https://insights.sbomify.com/CVE-2013-5668/): Information disclosure in n/a (high 7.8)
- [CVE-2013-5669](https://insights.sbomify.com/CVE-2013-5669/): Hardcoded credentials in n/a (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2013-5667 and fix it if it is affected.

What it is: CVE-2013-5667 is a critical command injection vulnerability in n/a, published on 24 Jan 2014. 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-2013-5667 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-2013-5667/ (Markdown: https://insights.sbomify.com/CVE-2013-5667/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2013-5667
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2013-5667
- OSV: https://osv.dev/vulnerability/CVE-2013-5667

---
From sbomify Insights: https://insights.sbomify.com/CVE-2013-5667/
Summaries are generated and may contain mistakes; the official description above is the record.