# CVE-2018-1000207: MODX Revolution Incorrect Access Control vulnerability

> Attackers can upload arbitrary files with custom names and content via web requests due to improper access control in MODX Revolution.

- **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:** Yes
- **Published:** 13 Jul 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-m899-6mh4-mpc5

## What is CVE-2018-1000207?

CVE-2018-1000207 is a high-severity vulnerability in n/a, published on 13 Jul 2018. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

MODX Revolution version <=2.6.4 contains a Incorrect Access Control vulnerability in Filtering user parameters before passing them into phpthumb class that can result in Creating file with custom a filename and content. This attack appear to be exploitable via Web request. This vulnerability appears to have been fixed in commit 06bc94257408f6a575de20ddb955aca505ef6e68.

Weakness: CWE-732 (Incorrect Permission Assignment for Critical Resource)

## Which versions are affected by CVE-2018-1000207?

2 open source packages ship an affected version, including modx/revolution. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `modx/revolution` | Packagist | All versions | 2.7.0 |
| `modx/revolution` | Packagist | All versions | 2.7.0 |

Products: Modx Modx Revolution.

## How do I fix CVE-2018-1000207?

Upgrade modx/revolution to 2.7.0 or later.

## Is CVE-2018-1000207 being exploited?

There is no known exploitation of CVE-2018-1000207 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2017-7321](https://insights.sbomify.com/CVE-2017-7321/): Code injection in n/a (critical 9.8)
- [CVE-2017-7324](https://insights.sbomify.com/CVE-2017-7324/): Code injection in n/a (critical 9.8)
- [CVE-2020-25911](https://insights.sbomify.com/CVE-2020-25911/): XML External Entity vulnerability in MODX CMS (critical 9.1)
- [CVE-2017-9069](https://insights.sbomify.com/CVE-2017-9069/): MODX Revolution allows overwriting .htaccess (high 8.8)
- [CVE-2017-7322](https://insights.sbomify.com/CVE-2017-7322/): Weak cryptography in n/a (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-1000207 and fix it if it is affected.

What it is: CVE-2018-1000207 is a high-severity vulnerability in n/a, published on 13 Jul 2018. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-1000207 in the wild and no public exploit code.

Affected packages and fixed versions:
- modx/revolution (Packagist): affected all versions; fixed in 2.7.0
- modx/revolution (Packagist): affected all versions; fixed in 2.7.0

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-2018-1000207/ (Markdown: https://insights.sbomify.com/CVE-2018-1000207/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-1000207
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-1000207
- OSV: https://osv.dev/vulnerability/CVE-2018-1000207

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-1000207/
Summaries are generated and may contain mistakes; the official description above is the record.