# CVE-2023-38579: Westermo Lynx 206-F2G Cross-Site Request Forgery

> Attackers can trick users into performing unintended actions on Westermo Lynx switches due to predictable CSRF tokens.

- **Severity:** High 8.0 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H`)
- **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:** 6 Feb 2024
- **Updated:** 7 Nov 2024
- **Also known as:** GHSA-89f2-38w4-8x2m

## What is CVE-2023-38579?

CVE-2023-38579 is a high-severity vulnerability in Westermo Lynx, published on 6 Feb 2024. 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 cross-site request forgery token in the request may be predictable or easily guessable allowing attackers to craft a malicious request, which could be triggered by a victim unknowingly. In a successful CSRF attack, the attacker could lead the victim user to carry out an action unintentionally.

Weakness: CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2023-38579?

It affects 1 product.


Products: Westermo L206-F2g Firmware.

## How do I fix CVE-2023-38579?

No fix has been published for CVE-2023-38579 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-38579 being exploited?

There is no known exploitation of CVE-2023-38579 in the wild and no public exploit code.

## Other vulnerabilities in Westermo Lynx

- [CVE-2023-45735](https://insights.sbomify.com/CVE-2023-45735/): Westermo Lynx Code Injection (high 8.0)
- [CVE-2023-45213](https://insights.sbomify.com/CVE-2023-45213/): Westermo Lynx Permissive Cross-domain Policy with Untrusted Domains (medium 6.6)
- [CVE-2023-40544](https://insights.sbomify.com/CVE-2023-40544/): Westermo Lynx Cleartext Transmission of Sensitive Information (medium 5.7)
- [CVE-2023-40143](https://insights.sbomify.com/CVE-2023-40143/): Westermo Lynx (medium 5.4)
- [CVE-2023-42765](https://insights.sbomify.com/CVE-2023-42765/): Westermo Lynx Cross-site Scripting (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-38579 and fix it if it is affected.

What it is: CVE-2023-38579 is a high-severity vulnerability in Westermo Lynx, published on 6 Feb 2024. 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-2023-38579 in the wild and no public exploit code.

Affected product: Westermo Lynx. 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-2023-38579/ (Markdown: https://insights.sbomify.com/CVE-2023-38579/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-38579
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-38579
- OSV: https://osv.dev/vulnerability/CVE-2023-38579

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-38579/
Summaries are generated and may contain mistakes; the official description above is the record.