# CVE-2023-2639: Rockwell Automation FactoryTalk System Services Vulnerable to Sensitive Information Disclosure

> Attackers can access sensitive security policy data via a malicious website exploiting unverified WebSocket connections in FactoryTalk System Services.

- **Severity:** Medium 4.1 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 13 Jun 2023
- **Updated:** 2 Jan 2025
- **Also known as:** GHSA-vhfm-8gx7-f4cp

## What is CVE-2023-2639?

CVE-2023-2639 is a medium-severity vulnerability in Rockwell Automation FactoryTalk System Services, published on 13 Jun 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

The underlying feedback mechanism of 

Rockwell Automation's FactoryTalk System Services that transfers the FactoryTalk Policy Manager rules to relevant devices on the network does not verify that the origin of the communication is from a legitimate local client device.  This may allow a threat actor to craft a malicious website that, when visited, will send a malicious script that can connect to the local WebSocket endpoint and wait for events as if it was a valid client device. If successfully exploited, this would allow a threat actor to receive information including whether FactoryTalk Policy Manager is installed and potentially the entire security policy.

Weakness: CWE-346 (Origin Validation Error)

## Which versions are affected by CVE-2023-2639?

It affects 2 products.


Products: Rockwellautomation Factorytalk Policy Manager, Rockwellautomation Factorytalk System Services.

## How do I fix CVE-2023-2639?

No fix has been published for CVE-2023-2639 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-2639 being exploited?

There is no known exploitation of CVE-2023-2639 in the wild and no public exploit code.

## Other vulnerabilities in Rockwell Automation FactoryTalk System Services

- [CVE-2023-2637](https://insights.sbomify.com/CVE-2023-2637/): Rockwell Automation FactoryTalk System Services Vulnerable To Use Of Hard-Coded Cryptographic Key (high 7.3)
- [CVE-2024-6325](https://insights.sbomify.com/CVE-2024-6325/): Rockwell Automation Unsecured Private Keys in FactoryTalk® System Services (medium 6.0)
- [CVE-2023-2638](https://insights.sbomify.com/CVE-2023-2638/): Rockwell Automation FactoryTalk System Services Vulnerable to a Denial-of-Service Attack (medium 5.9)
- [CVE-2024-6326](https://insights.sbomify.com/CVE-2024-6326/): Rockwell Automation Unsecured Private Keys in FactoryTalk® System Services (low 1.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-2639 and fix it if it is affected.

What it is: CVE-2023-2639 is a medium-severity vulnerability in Rockwell Automation FactoryTalk System Services, published on 13 Jun 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-2639 in the wild and no public exploit code.

Affected product: Rockwell Automation FactoryTalk System Services. 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-2023-2639/ (Markdown: https://insights.sbomify.com/CVE-2023-2639/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-2639
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-2639
- OSV: https://osv.dev/vulnerability/CVE-2023-2639

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-2639/
Summaries are generated and may contain mistakes; the official description above is the record.