# CVE-2023-34971: QTS, QuTS hero

> Local network clients can decrypt data via brute force due to inadequate encryption strength in QNAP operating systems.

- **Severity:** High 7.1 (`CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 24 Aug 2023
- **Updated:** 2 Oct 2024
- **Also known as:** GHSA-8f9x-x39g-28fc

## What is CVE-2023-34971?

CVE-2023-34971 is a high-severity vulnerability in Qnap Qts, published on 24 Aug 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

An inadequate encryption strength vulnerability has been reported to affect QNAP operating systems. If exploited, the vulnerability possibly allows local network clients to decrypt the data using brute force attacks via unspecified vectors.

We have already fixed the vulnerability in the following versions:
QTS 5.0.1.2425 build 20230609 and later
QTS 5.1.0.2444 build 20230629 and later
QTS 4.5.4.2467 build 20230718 and later
QuTS hero h5.1.0.2424 build 20230609 and later
QuTS hero h4.5.4.2476 build 20230728 and later

Weakness: CWE-326 (Inadequate Encryption Strength)

## Which versions are affected by CVE-2023-34971?

It affects 2 products.


Products: Qnap Qts, Qnap Quts Hero.

## How do I fix CVE-2023-34971?

No fix has been published for CVE-2023-34971 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-34971 being exploited?

There is no known exploitation of CVE-2023-34971 in the wild and no public exploit code.

## Other vulnerabilities in Qnap Qts

- [CVE-2020-2509](https://insights.sbomify.com/CVE-2020-2509/): QNAP Network-Attached Storage (NAS) Command Injection (critical 9.8, exploited in the wild)
- [CVE-2018-19949](https://insights.sbomify.com/CVE-2018-19949/): QNAP NAS File Station Command Injection (critical 9.8, exploited in the wild)
- [CVE-2019-7193](https://insights.sbomify.com/CVE-2019-7193/): QNAP QTS Improper Input Validation (critical 9.8, exploited in the wild)
- [CVE-2018-19943](https://insights.sbomify.com/CVE-2018-19943/): QNAP NAS File Station Cross-Site Scripting (high 8.0, exploited in the wild)
- [CVE-2018-19953](https://insights.sbomify.com/CVE-2018-19953/): QNAP NAS File Station Cross-Site Scripting (medium 6.1, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-34971 and fix it if it is affected.

What it is: CVE-2023-34971 is a high-severity vulnerability in Qnap Qts, published on 24 Aug 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-34971 in the wild and no public exploit code.

Affected product: Qnap Qts. 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-2023-34971/ (Markdown: https://insights.sbomify.com/CVE-2023-34971/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-34971
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-34971
- OSV: https://osv.dev/vulnerability/CVE-2023-34971

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-34971/
Summaries are generated and may contain mistakes; the official description above is the record.