# CVE-2018-7784: Code injection in U.motion Builder

> Attackers can execute arbitrary code or cause denial of service in Schneider Electric U.motion Builder via input string evaluation.

- **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:** 3 Jul 2018
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-p42r-gh35-r237

## What is CVE-2018-7784?

CVE-2018-7784 is a critical code injection vulnerability in Schneider Electric SE U.motion Builder, published on 3 Jul 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

In Schneider Electric U.motion Builder software versions prior to v1.3.4, this exploit occurs when the submitted data of an input string is evaluated as a command by the application. In this way, the attacker could execute code, read the stack, or cause a segmentation fault in the running application.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2018-7784?

It affects 1 product.


Products: Schneider-Electric U.motion.

## How do I fix CVE-2018-7784?

No fix has been published for CVE-2018-7784 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-7784 being exploited?

There is no known exploitation of CVE-2018-7784 in the wild and no public exploit code.

## Other vulnerabilities in Schneider Electric SE U.motion Builder

- [CVE-2018-7770](https://insights.sbomify.com/CVE-2018-7770/): Path traversal in U.Motion (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-7784 and fix it if it is affected.

What it is: CVE-2018-7784 is a critical code injection vulnerability in Schneider Electric SE U.motion Builder, published on 3 Jul 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-2018-7784 in the wild and no public exploit code.

Affected product: Schneider Electric SE U.motion Builder. 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-2018-7784/ (Markdown: https://insights.sbomify.com/CVE-2018-7784/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-7784
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-7784
- OSV: https://osv.dev/vulnerability/CVE-2018-7784

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-7784/
Summaries are generated and may contain mistakes; the official description above is the record.