# CVE-2023-39479: Softing Secure Integration Server OPC UA Gateway Directory Creation Vulnerability

> Remote attackers can bypass authentication to create directories on the filesystem, potentially leading to root code execution.

- **Severity:** Medium 6.6 (`CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 3 May 2024
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-xc4w-62f4-xjvv

## What is CVE-2023-39479?

CVE-2023-39479 is a medium-severity path traversal vulnerability in Softing Secure Integration Server, published on 3 May 2024. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Softing Secure Integration Server OPC UA Gateway Directory Creation Vulnerability. This vulnerability allows remote attackers to create directories on affected installations of Softing Secure Integration Server. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.

The specific flaw exists within the handling of FileDirectory OPC UA Objects. The issue results from allowing unauthorized access to the filesystem. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-20548.

Weakness: CWE-552 (Files or Directories Accessible to External Parties)

## Which versions are affected by CVE-2023-39479?

It affects 1 product.


Products: Softing Secure Integration Server.

## How do I fix CVE-2023-39479?

No fix has been published for CVE-2023-39479 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-39479 being exploited?

There is no known exploitation of CVE-2023-39479 in the wild and no public exploit code.

## Other vulnerabilities in Softing Secure Integration Server

- [CVE-2023-39478](https://insights.sbomify.com/CVE-2023-39478/): Softing Secure Integration Server Exposure of Resource to Wrong Sphere Remote Code Execution Vulnerability (medium 6.6)
- [CVE-2023-39481](https://insights.sbomify.com/CVE-2023-39481/): Softing Secure Integration Server Interpretation Conflict Remote Code Execution Vulnerability (medium 6.6)
- [CVE-2023-39480](https://insights.sbomify.com/CVE-2023-39480/): Softing Secure Integration Server FileDirectory OPC UA Object Arbitrary File Creation Vulnerability (medium 4.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-39479 and fix it if it is affected.

What it is: CVE-2023-39479 is a medium-severity path traversal vulnerability in Softing Secure Integration Server, published on 3 May 2024. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-39479 in the wild and no public exploit code.

Affected product: Softing Secure Integration Server. 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-2023-39479/ (Markdown: https://insights.sbomify.com/CVE-2023-39479/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-39479
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-39479
- OSV: https://osv.dev/vulnerability/CVE-2023-39479

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-39479/
Summaries are generated and may contain mistakes; the official description above is the record.