# CVE-2023-2091: KylinSoft youker-assistant adjust_cpufreq_scaling_governer os command injection

> Local attackers can execute arbitrary OS commands via the adjust_cpufreq_scaling_governer function in KylinSoft youker-assistant on KylinOS.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/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:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 15 Apr 2023
- **Updated:** 22 Nov 2024
- **Also known as:** GHSA-p68q-j5xf-h247, OESA-2024-1525, OESA-2024-1601, OESA-2024-1657

## What is CVE-2023-2091?

CVE-2023-2091 is a high-severity command injection vulnerability in KylinSoft youker-assistant, published on 15 Apr 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability classified as critical was found in KylinSoft youker-assistant on KylinOS. Affected by this vulnerability is the function adjust_cpufreq_scaling_governer. The manipulation leads to os command injection. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. Upgrading to version 3.1.4.13 is able to address this issue. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-226099.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2023-2091?

It affects 1 product.


Products: Kylinos Youker-Assistant.

## How do I fix CVE-2023-2091?

Upgrade to a fixed version.

## Is CVE-2023-2091 being exploited?

There is no known exploitation of CVE-2023-2091 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-2091 and fix it if it is affected.

What it is: CVE-2023-2091 is a high-severity command injection vulnerability in KylinSoft youker-assistant, published on 15 Apr 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-2023-2091 in the wild and no public exploit code.

Affected product: KylinSoft youker-assistant. 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-2023-2091/ (Markdown: https://insights.sbomify.com/CVE-2023-2091/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-2091
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-2091
- OSV: https://osv.dev/vulnerability/CVE-2023-2091

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-2091/
Summaries are generated and may contain mistakes; the official description above is the record.