# CVE-2023-1109: PHOENIX CONTACT: Directory Traversal Vulnerability in ENERGY AXC PU Web service

> Authenticated restricted users can read, write, and create files across the file system via crafted URLs, potentially gaining full control of the service.

- **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 Apr 2023
- **Updated:** 5 Feb 2025
- **Also known as:** GHSA-w923-8w64-f5gh

## What is CVE-2023-1109?

CVE-2023-1109 is a high-severity path traversal vulnerability in PHOENIX CONTACT ENERGY AXC PU (1264327), published on 17 Apr 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

In Phoenix Contacts ENERGY AXC PU Web service an authenticated restricted user of the web frontend can access, read, write and create files throughout the file system using specially crafted URLs via the upload and download functionality of the web service. This may lead to full control of the service.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2023-1109?

It affects 4 products.


Products: Phoenixcontact Energy Axc Pu, Phoenixcontact Infobox Firmware, Phoenixcontact Smartrtu Axc Ig Firmware, Phoenixcontact Smartrtu Axc Sg Firmware.

## How do I fix CVE-2023-1109?

No fix has been published for CVE-2023-1109 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-1109 being exploited?

There is no known exploitation of CVE-2023-1109 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-1109 and fix it if it is affected.

What it is: CVE-2023-1109 is a high-severity path traversal vulnerability in PHOENIX CONTACT ENERGY AXC PU (1264327), published on 17 Apr 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-2023-1109 in the wild and no public exploit code.

Affected product: PHOENIX CONTACT ENERGY AXC PU (1264327). 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-2023-1109/ (Markdown: https://insights.sbomify.com/CVE-2023-1109/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-1109
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-1109
- OSV: https://osv.dev/vulnerability/CVE-2023-1109

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-1109/
Summaries are generated and may contain mistakes; the official description above is the record.