# CVE-2019-19108: B&R Automation Runtime SNMP Authentication and Authorization Weakness

> Unauthenticated attackers can modify B&R Automation Runtime configurations via SNMP due to weak authentication mechanisms.

- **Severity:** Critical 9.4 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/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:** 20 Apr 2020
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-wrx9-6qv7-wvvw

## What is CVE-2019-19108?

CVE-2019-19108 is a critical vulnerability in B&R Automation Runtime, published on 20 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An authentication weakness in the SNMP service in B&R Automation Runtime versions 2.96, 3.00, 3.01, 3.06 to 3.10, 4.00 to 4.63, 4.72 and above allows unauthenticated users to modify the configuration of B&R products via SNMP.

Weakness: CWE-798 (Use of Hard-coded Credentials)

## Which versions are affected by CVE-2019-19108?

It affects 2 products.


Products: Br-Automation Automation Runtime, Br-Automation Automation Studio.

## How do I fix CVE-2019-19108?

No fix has been published for CVE-2019-19108 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-19108 being exploited?

There is no known exploitation of CVE-2019-19108 in the wild and no public exploit code.

## Other vulnerabilities in B&R Automation Runtime

- [CVE-2024-0323](https://insights.sbomify.com/CVE-2024-0323/): FTP uses unsecure encryption mechanisms (critical 9.8)
- [CVE-2023-3242](https://insights.sbomify.com/CVE-2023-3242/): Denial of service in B&R Automation Runtime (high 8.6)
- [CVE-2021-22275](https://insights.sbomify.com/CVE-2021-22275/): Denial of service vulnerability on Automation Runtime webserver (high 8.6)
- [CVE-2024-5800](https://insights.sbomify.com/CVE-2024-5800/): Diffie-Hellman groups with insufficient strength used in SSL/TLS stack of B&R Automation Runtime (high 8.3)
- [CVE-2023-6028](https://insights.sbomify.com/CVE-2023-6028/): SDM Web interface vulnerable to XSS (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-19108 and fix it if it is affected.

What it is: CVE-2019-19108 is a critical vulnerability in B&R Automation Runtime, published on 20 Apr 2020. 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-2019-19108 in the wild and no public exploit code.

Affected product: B&R Automation Runtime. 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-2019-19108/ (Markdown: https://insights.sbomify.com/CVE-2019-19108/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-19108
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-19108
- OSV: https://osv.dev/vulnerability/CVE-2019-19108

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-19108/
Summaries are generated and may contain mistakes; the official description above is the record.