# CVE-2023-4518: Denial of service in Relion670

> An attacker can cause a device reboot by sending malformed GOOSE messages if receiving blocks are configured, impacting availability of the IED.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 1 Dec 2023
- **Updated:** 23 Sep 2024
- **Also known as:** GHSA-g5c9-vc82-389p

## What is CVE-2023-4518?

CVE-2023-4518 is a medium-severity denial of service vulnerability in Hitachi Energy Relion670, published on 1 Dec 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability exists in the input validation of the GOOSE 
messages where out of range values received and processed 
by the IED caused a reboot of the device. In order for an 
attacker to exploit the vulnerability, goose receiving blocks need 
to be configured.

Weakness: CWE-1284 (Improper Validation of Specified Quantity in Input)

## Which versions are affected by CVE-2023-4518?

It affects 3 products.


Products: Hitachienergy Relion 650 Firmware, Hitachienergy Relion 670 Firmware, Hitachienergy Relion Sam600-Io Firmware.

## How do I fix CVE-2023-4518?

No fix has been published for CVE-2023-4518 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-4518 being exploited?

There is no known exploitation of CVE-2023-4518 in the wild and no public exploit code.

## Other vulnerabilities in Hitachi Energy Relion670

- [CVE-2021-35535](https://insights.sbomify.com/CVE-2021-35535/): Insufficient Security Control Vulnerability (high 8.1)
- [CVE-2019-18247](https://insights.sbomify.com/CVE-2019-18247/): Denial of service in Relion 650 and 670 Series (high 7.5)
- [CVE-2022-3864](https://insights.sbomify.com/CVE-2022-3864/): Security feature bypass in Relion 670/650/SAM600-IO Series (medium 4.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-4518 and fix it if it is affected.

What it is: CVE-2023-4518 is a medium-severity denial of service vulnerability in Hitachi Energy Relion670, published on 1 Dec 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-4518 in the wild and no public exploit code.

Affected product: Hitachi Energy Relion670. 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-2023-4518/ (Markdown: https://insights.sbomify.com/CVE-2023-4518/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-4518
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-4518
- OSV: https://osv.dev/vulnerability/CVE-2023-4518

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-4518/
Summaries are generated and may contain mistakes; the official description above is the record.