# CVE-2023-41374: Use after free in Kostac PLC Programming Software

> Arbitrary code execution via double free when opening crafted project files in Kostac PLC Programming Software.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/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:** 20 Sep 2023
- **Updated:** 24 Sep 2024
- **Also known as:** GHSA-w2rq-pvq9-xwmf

## What is CVE-2023-41374?

CVE-2023-41374 is a high-severity use after free vulnerability in JTEKT ELECTRONICS CORPORATION Kostac PLC Programming Software, published on 20 Sep 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

Double free issue exists in Kostac PLC Programming Software Version 1.6.11.0 and earlier. Arbitrary code may be executed by having a user open a specially crafted project file which was saved using Kostac PLC Programming Software Version 1.6.9.0 and earlier because the issue exists in parsing of KPP project files. The vendor states that Kostac PLC Programming Software Version 1.6.10.0 or later implements the function which prevents a project file alteration. Therefore, to mitigate the impact of these vulnerabilities, a project file which was saved using Kostac PLC Programming Software Version 1.6.9.0 and earlier needs to be saved again using Kostac PLC Programming Software Version 1.6.10.0 or later.

Weakness: CWE-415 (Double Free)

## Which versions are affected by CVE-2023-41374?

It affects 1 product.


Products: Jtekt Kostac Plc.

## How do I fix CVE-2023-41374?

No fix has been published for CVE-2023-41374 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-41374 being exploited?

There is no known exploitation of CVE-2023-41374 in the wild and no public exploit code.

## Other vulnerabilities in JTEKT ELECTRONICS CORPORATION Kostac PLC Programming Software

- [CVE-2024-47135](https://insights.sbomify.com/CVE-2024-47135/): Memory corruption in Kostac PLC Programming Software (Former name: Koyo PLC Programming Software) (high 7.8)
- [CVE-2024-47136](https://insights.sbomify.com/CVE-2024-47136/): Memory corruption in Kostac PLC Programming Software (Former name: Koyo PLC Programming Software) (high 7.8)
- [CVE-2023-41375](https://insights.sbomify.com/CVE-2023-41375/): Use after free in Kostac PLC Programming Software (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-41374 and fix it if it is affected.

What it is: CVE-2023-41374 is a high-severity use after free vulnerability in JTEKT ELECTRONICS CORPORATION Kostac PLC Programming Software, published on 20 Sep 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-2023-41374 in the wild and no public exploit code.

Affected product: JTEKT ELECTRONICS CORPORATION Kostac PLC Programming Software. 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-2023-41374/ (Markdown: https://insights.sbomify.com/CVE-2023-41374/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-41374
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-41374
- OSV: https://osv.dev/vulnerability/CVE-2023-41374

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-41374/
Summaries are generated and may contain mistakes; the official description above is the record.