# CVE-2023-39544: Auth bypass in CLUSTERPRO X SingleServerSafe (EXPRESSCLUSTER X SingleServerSafe)

> Attackers can bypass authentication to log in and execute arbitrary commands on NEC CLUSTERPRO and EXPRESSCLUSTER X products.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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:** Not needed
- **Fix available:** No
- **Published:** 17 Nov 2023
- **Updated:** 29 Aug 2024
- **Also known as:** GHSA-9vh9-pgv9-hw48

## What is CVE-2023-39544?

CVE-2023-39544 is a high-severity authentication bypass vulnerability in NEC Corporation CLUSTERPRO X SingleServerSafe (EXPRESSCLUSTER X SingleServerSafe), published on 17 Nov 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

CLUSTERPRO X Ver5.1 and earlier and EXPRESSCLUSTER X 5.1 and earlier, CLUSTERPRO X SingleServerSafe 5.1 and earlier, EXPRESSCLUSTER X SingleServerSafe 5.1 and earlier allows a attacker to log in to the product may execute an arbitrary command.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2023-39544?

It affects 2 products.


Products: Nec Expresscluster X, Nec Expresscluster X Singleserversafe.

## How do I fix CVE-2023-39544?

No fix has been published for CVE-2023-39544 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-39544 being exploited?

There is no known exploitation of CVE-2023-39544 in the wild and no public exploit code.

## Other vulnerabilities in NEC Corporation CLUSTERPRO X SingleServerSafe (EXPRESSCLUSTER X SingleServerSafe)

- [CVE-2022-34822](https://insights.sbomify.com/CVE-2022-34822/): Path traversal in CLUSTERPRO X (critical 9.8)
- [CVE-2022-34823](https://insights.sbomify.com/CVE-2022-34823/): Memory corruption in CLUSTERPRO X (critical 9.8)
- [CVE-2022-34824](https://insights.sbomify.com/CVE-2022-34824/): Path traversal in CLUSTERPRO X (critical 9.8)
- [CVE-2022-34825](https://insights.sbomify.com/CVE-2022-34825/): Path traversal in CLUSTERPRO X (critical 9.8)
- [CVE-2023-39545](https://insights.sbomify.com/CVE-2023-39545/): Command injection in CLUSTERPRO X (EXPRESSCLUSTER X) (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-39544 and fix it if it is affected.

What it is: CVE-2023-39544 is a high-severity authentication bypass vulnerability in NEC Corporation CLUSTERPRO X SingleServerSafe (EXPRESSCLUSTER X SingleServerSafe), published on 17 Nov 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-39544 in the wild and no public exploit code.

Affected product: NEC Corporation CLUSTERPRO X SingleServerSafe (EXPRESSCLUSTER X SingleServerSafe). 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-2023-39544/ (Markdown: https://insights.sbomify.com/CVE-2023-39544/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-39544
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-39544
- OSV: https://osv.dev/vulnerability/CVE-2023-39544

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-39544/
Summaries are generated and may contain mistakes; the official description above is the record.