# CVE-2018-13338: Command injection in n/a

> Attackers can execute arbitrary system commands via the username parameter during user creation in TerraMaster TOS.

- **Severity:** Critical 9.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Nov 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-qgmv-c6q2-fvh6

## What is CVE-2018-13338?

CVE-2018-13338 is a critical command injection vulnerability in n/a, published on 27 Nov 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

System command injection in ajaxdata.php in TerraMaster TOS version 3.1.03 allows attackers to execute system commands via the "username" parameter during user creation.

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

## Which versions are affected by CVE-2018-13338?

It affects 1 product.


Products: Terra-Master Terramaster Operating System.

## How do I fix CVE-2018-13338?

No fix has been published for CVE-2018-13338 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-13338 being exploited?

There is no known exploitation of CVE-2018-13338 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2022-24990](https://insights.sbomify.com/CVE-2022-24990/): TerraMaster OS Remote Command Execution (critical 9.8, exploited in the wild)
- [CVE-2022-24989](https://insights.sbomify.com/CVE-2022-24989/): Command injection in n/a (critical 9.8)
- [CVE-2020-35665](https://insights.sbomify.com/CVE-2020-35665/): Command injection in n/a (critical 9.8)
- [CVE-2018-13336](https://insights.sbomify.com/CVE-2018-13336/): Command injection in n/a (critical 9.8)
- [CVE-2018-13350](https://insights.sbomify.com/CVE-2018-13350/): SQL injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-13338 and fix it if it is affected.

What it is: CVE-2018-13338 is a critical command injection vulnerability in n/a, published on 27 Nov 2018. 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-2018-13338 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-2018-13338/ (Markdown: https://insights.sbomify.com/CVE-2018-13338/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-13338
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-13338
- OSV: https://osv.dev/vulnerability/CVE-2018-13338

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-13338/
Summaries are generated and may contain mistakes; the official description above is the record.