# CVE-2023-3256: Advantech R-SeeNet External Control of File Name or Path

> Low-level users can access and load local file contents in Advantech R-SeeNet due to improper control of file names or paths.

- **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:** 22 Jun 2023
- **Updated:** 16 Jan 2025
- **Also known as:** GHSA-79pm-5425-72gv

## What is CVE-2023-3256?

CVE-2023-3256 is a high-severity path traversal vulnerability in Advantech  R-SeeNet, published on 22 Jun 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Advantech R-SeeNet 
versions 2.4.22 
allows low-level users to access and load the content of local files.

Weakness: CWE-610 (Externally Controlled Reference to a Resource in Another Sphere), CWE-73 (External Control of File Name or Path)

## Which versions are affected by CVE-2023-3256?

It affects 1 product.


Products: Advantech R-Seenet.

## How do I fix CVE-2023-3256?

No fix has been published for CVE-2023-3256 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-3256 being exploited?

There is no known exploitation of CVE-2023-3256 in the wild and no public exploit code.

## Other vulnerabilities in Advantech  R-SeeNet

- [CVE-2023-5642](https://insights.sbomify.com/CVE-2023-5642/): Advantech R-SeeNet Unauthenticated Read/Write (critical 9.8)
- [CVE-2023-2611](https://insights.sbomify.com/CVE-2023-2611/): Advantech R-SeeNet Use of Hard-coded Credentials (critical 9.8)
- [CVE-2022-3385](https://insights.sbomify.com/CVE-2022-3385/): Memory corruption in R-SeeNet (critical 9.8)
- [CVE-2022-3386](https://insights.sbomify.com/CVE-2022-3386/): Memory corruption in R-SeeNet (critical 9.8)
- [CVE-2021-21805](https://insights.sbomify.com/CVE-2021-21805/): Command injection in Advantech (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-3256 and fix it if it is affected.

What it is: CVE-2023-3256 is a high-severity path traversal vulnerability in Advantech  R-SeeNet, published on 22 Jun 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-2023-3256 in the wild and no public exploit code.

Affected product: Advantech  R-SeeNet. 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-2023-3256/ (Markdown: https://insights.sbomify.com/CVE-2023-3256/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-3256
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-3256
- OSV: https://osv.dev/vulnerability/CVE-2023-3256

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-3256/
Summaries are generated and may contain mistakes; the official description above is the record.