# CVE-2006-6690: Command injection in n/a

> Authenticated users can execute arbitrary commands via shell metacharacters in the userUid parameter of the TYPO3 rtehtmlarea extension.

- **Severity:** High 7.5 (`AV:N/AC:L/Au:N/C:P/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 21 Dec 2006
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-jmq2-75fq-cffp

## What is CVE-2006-6690?

CVE-2006-6690 is a high-severity command injection vulnerability in Typo3 Typo3, published on 21 Dec 2006. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

rtehtmlarea/pi1/class.tx_rtehtmlarea_pi1.php in Typo3 4.0.0 through 4.0.3, 3.7 and 3.8 with the rtehtmlarea extension, and 4.1 beta allows remote authenticated users to execute arbitrary commands via shell metacharacters in the userUid parameter to rtehtmlarea/htmlarea/plugins/SpellChecker/spell-check-logic.php, and possibly another vector.

## Which versions are affected by CVE-2006-6690?

It affects 1 product.


Products: Typo3 Typo3.

## How do I fix CVE-2006-6690?

No fix has been published for CVE-2006-6690 yet. Limit exposure of the affected software until one is available.

## Is CVE-2006-6690 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2006-6690 exists.

Public exploit code:

- Typo3 3.7/3.8/4.0 - 'Class.TX_RTEHTMLArea_PI1.php' Multiple Remote Command Execution Vulnerabilities (exploitdb)

## Other vulnerabilities in Typo3 Typo3

- [CVE-2009-0258](https://insights.sbomify.com/CVE-2009-0258/): Indexed Search Engine for TYPO3 Command Execution via Metacharacter Injection (critical 10.0)
- [CVE-2011-3583](https://insights.sbomify.com/CVE-2011-3583/): Typo3 SQL injection due to faulty prepared statements (critical 9.8)
- [CVE-2011-4628](https://insights.sbomify.com/CVE-2011-4628/): Typo3 Authentication Bypass (critical 9.8)
- [CVE-2023-24814](https://insights.sbomify.com/CVE-2023-24814/): Persisted Cross-Site Scripting in Frontend Rendering in typo3 (high 8.8)
- [CVE-2021-41113](https://insights.sbomify.com/CVE-2021-41113/): Cross-Site-Request-Forgery in Backend URI Handling in Typo3 (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2006-6690 and fix it if it is affected.

What it is: CVE-2006-6690 is a high-severity command injection vulnerability in Typo3 Typo3, published on 21 Dec 2006. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2006-6690 exists.

Affected product: Typo3 Typo3. 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-2006-6690/ (Markdown: https://insights.sbomify.com/CVE-2006-6690/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2006-6690
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2006-6690
- OSV: https://osv.dev/vulnerability/CVE-2006-6690

---
From sbomify Insights: https://insights.sbomify.com/CVE-2006-6690/
Summaries are generated and may contain mistakes; the official description above is the record.