# CVE-2018-13798: Denial of service in SICAM A8000 CP-8000, SICAM A8000 CP-802X, SICAM A8000 CP-8050

> Unauthenticated remote attackers can cause a denial-of-service condition on the web server of Siemens SICAM A8000 devices via crafted network packets.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 21 Mar 2019
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-fww6-rw9g-qvh7

## What is CVE-2018-13798?

CVE-2018-13798 is a high-severity denial of service vulnerability in Siemens AG SICAM A8000 CP-8000, SICAM A8000 CP-802X, SICAM A8000 CP-8050, published on 21 Mar 2019. 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 SICAM A8000 CP-8000 (All versions < V14), SICAM A8000 CP-802X (All versions < V14), SICAM A8000 CP-8050 (All versions < V2.00). Specially crafted network packets sent to port 80/TCP or 443/TCP could allow an unauthenticated remote attacker to cause a Denial-of-Service condition of the web server. The security vulnerability could be exploited by an attacker with network access to the affected systems on port 80/TCP or 443/TCP. Successful exploitation requires no system privileges and no user interaction. An attacker could use the vulnerability to compromise availability of the web server. A system reboot is required to recover the web service of the device. At the time of advisory update, exploit code for this security vulnerability is public.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2018-13798?

It affects 3 products.


Products: Siemens Sicam A8000 Cp-8000 Firmware, Siemens Sicam A8000 Cp-802x Firmware, Siemens Sicam A8000 Cp-8050 Firmware.

## How do I fix CVE-2018-13798?

No fix has been published for CVE-2018-13798 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-13798 being exploited?

There is no known exploitation of CVE-2018-13798 in the wild and no public exploit code.

## Other vulnerabilities in Siemens AG SICAM A8000 CP-8000, SICAM A8000 CP-802X, SICAM A8000 CP-8050

- [CVE-2022-29884](https://insights.sbomify.com/CVE-2022-29884/): Denial of service in CP-8000 MASTER MODULE WITH I/O -25/+70°C (high 7.5)
- [CVE-2020-28396](https://insights.sbomify.com/CVE-2020-28396/): Weak cryptography in SICAM A8000 CP-8000 (high 7.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-13798 and fix it if it is affected.

What it is: CVE-2018-13798 is a high-severity denial of service vulnerability in Siemens AG SICAM A8000 CP-8000, SICAM A8000 CP-802X, SICAM A8000 CP-8050, published on 21 Mar 2019. 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-2018-13798 in the wild and no public exploit code.

Affected product: Siemens AG SICAM A8000 CP-8000, SICAM A8000 CP-802X, SICAM A8000 CP-8050. 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-2018-13798/ (Markdown: https://insights.sbomify.com/CVE-2018-13798/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-13798
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-13798
- OSV: https://osv.dev/vulnerability/CVE-2018-13798

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-13798/
Summaries are generated and may contain mistakes; the official description above is the record.