# CVE-2018-11456: Server-side request forgery in Automation License Manager 5

> An attacker can use the vulnerable Siemens Automation License Manager to scan network ports on remote systems, bypassing network restrictions.

- **Severity:** Medium 5.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Aug 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-qwxx-q8h8-xx3q

## What is CVE-2018-11456?

CVE-2018-11456 is a medium-severity server-side request forgery vulnerability in Siemens AG Automation License Manager 5, published on 7 Aug 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability has been identified in Automation License Manager 5 (All versions < 5.3.4.4). An attacker with network access to the device could send specially crafted network packets to determine whether or not a network port on another remote system is accessible or not. This allows the attacker to do basic network scanning using the victims machine. Successful exploitation requires a network connection to the affected device. The attacker does not need privileges, no user interaction is required. The impact is limited to determining whether or not a port on a target system is accessible by the affected device.

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2018-11456?

It affects 1 product.


Products: Siemens Automation License Manager.

## How do I fix CVE-2018-11456?

No fix has been published for CVE-2018-11456 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-11456 being exploited?

There is no known exploitation of CVE-2018-11456 in the wild and no public exploit code.

## Other vulnerabilities in Siemens AG Automation License Manager 5

- [CVE-2016-8565](https://insights.sbomify.com/CVE-2016-8565/): Missing authorization in n/a (critical 9.1)
- [CVE-2018-11455](https://insights.sbomify.com/CVE-2018-11455/): Path traversal in Automation License Manager 5, Automation License Manager 6 (high 8.8)
- [CVE-2022-43513](https://insights.sbomify.com/CVE-2022-43513/): Path traversal in Automation License Manager V5 (high 8.2)
- [CVE-2020-7583](https://insights.sbomify.com/CVE-2020-7583/): Missing authorization in Automation License Manager 5 (high 7.8)
- [CVE-2022-43514](https://insights.sbomify.com/CVE-2022-43514/): Path traversal in Automation License Manager V5 (high 7.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-11456 and fix it if it is affected.

What it is: CVE-2018-11456 is a medium-severity server-side request forgery vulnerability in Siemens AG Automation License Manager 5, published on 7 Aug 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-11456 in the wild and no public exploit code.

Affected product: Siemens AG Automation License Manager 5. 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-2018-11456/ (Markdown: https://insights.sbomify.com/CVE-2018-11456/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-11456
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-11456
- OSV: https://osv.dev/vulnerability/CVE-2018-11456

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-11456/
Summaries are generated and may contain mistakes; the official description above is the record.