# CVE-2018-6926: Command injection in n/a

> Site administrators can inject arbitrary OS commands in MISP when a specific Red Hat/CentOS setting is enabled.

- **Severity:** High 7.2 (`CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Feb 2018
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-j7gq-x7p9-9cgf

## What is CVE-2018-6926?

CVE-2018-6926 is a high-severity command injection vulnerability in Misp-Project Misp, published on 12 Feb 2018. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

In app/Controller/ServersController.php in MISP 2.4.87, a server setting permitted the override of a path variable on certain Red Hed Enterprise Linux and CentOS systems (where rh_shell_fix was enabled), and consequently allowed site admins to inject arbitrary OS commands. The impact is limited by the setting being only accessible to the site administrator.

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

## Which versions are affected by CVE-2018-6926?

It affects 1 product.


Products: Misp-Project Misp.

## How do I fix CVE-2018-6926?

No fix has been published for CVE-2018-6926 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-6926 being exploited?

There is no known exploitation of CVE-2018-6926 in the wild and no public exploit code.

## Other vulnerabilities in Misp-Project Misp

- [CVE-2024-46918](https://insights.sbomify.com/CVE-2024-46918/): Missing authorization in n/a (critical 9.8)
- [CVE-2024-45509](https://insights.sbomify.com/CVE-2024-45509/): Missing authorization in n/a (critical 9.8)
- [CVE-2024-29858](https://insights.sbomify.com/CVE-2024-29858/): File upload in n/a (critical 9.8)
- [CVE-2024-29859](https://insights.sbomify.com/CVE-2024-29859/): File upload in n/a (critical 9.8)
- [CVE-2024-25674](https://insights.sbomify.com/CVE-2024-25674/): File upload in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-6926 and fix it if it is affected.

What it is: CVE-2018-6926 is a high-severity command injection vulnerability in Misp-Project Misp, published on 12 Feb 2018. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-6926 in the wild and no public exploit code.

Affected product: Misp-Project Misp. 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-2018-6926/ (Markdown: https://insights.sbomify.com/CVE-2018-6926/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-6926
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-6926
- OSV: https://osv.dev/vulnerability/CVE-2018-6926

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-6926/
Summaries are generated and may contain mistakes; the official description above is the record.