# CVE-2019-19104: ABB/Busch-Jaeger Telephone Gateway TG/S 3.2 Improper Authentication and Access Control

> Unauthenticated attackers can access sensitive information via specific URLs, potentially leading to privilege escalation on ABB Telephone Gateways.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:** 22 Apr 2020
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-5x7j-64fm-ggfp

## What is CVE-2019-19104?

CVE-2019-19104 is a critical missing authorization vulnerability in ABB 6186/11 Telefon-Gateway, published on 22 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The web server in ABB Telephone Gateway TG/S 3.2 and Busch-Jaeger 6186/11 Telefon-Gateway allows access to different endpoints of the application without authenticating by accessing a specific uniform resource locator (URL) , violating the access-control (ACL) rules. This issue allows obtaining sensitive information that may aid in further attacks and privilege escalation.

Weakness: CWE-306 (Missing Authentication for Critical Functionality), CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2019-19104?

It affects 2 products.


Products: Abb Tg\/S3.2 Firmware, Busch-Jaeger 6186\/11 Firmware.

## How do I fix CVE-2019-19104?

No fix has been published for CVE-2019-19104 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-19104 being exploited?

There is no known exploitation of CVE-2019-19104 in the wild and no public exploit code.

## Other vulnerabilities in ABB 6186/11 Telefon-Gateway

- [CVE-2019-19106](https://insights.sbomify.com/CVE-2019-19106/): ABB/Busch-Jaeger Telephone Gateway TG/S 3.2 Access Control issues (critical 9.1)
- [CVE-2019-19105](https://insights.sbomify.com/CVE-2019-19105/): ABB/Busch-Jaeger Telephone Gateway TG/S 3.2 Plaintext storing of credentials (medium 6.2)
- [CVE-2019-19107](https://insights.sbomify.com/CVE-2019-19107/): ABB/Busch-Jaeger Telephone Gateway TG/S 3.2 Information Exposure (medium 6.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-19104 and fix it if it is affected.

What it is: CVE-2019-19104 is a critical missing authorization vulnerability in ABB 6186/11 Telefon-Gateway, published on 22 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-2019-19104 in the wild and no public exploit code.

Affected product: ABB 6186/11 Telefon-Gateway. 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-2019-19104/ (Markdown: https://insights.sbomify.com/CVE-2019-19104/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-19104
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-19104
- OSV: https://osv.dev/vulnerability/CVE-2019-19104

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-19104/
Summaries are generated and may contain mistakes; the official description above is the record.