# CVE-2019-11896: Incorrect pviilege assignment in the 3rd party pairing mechanism of the Bosch Smart Home Controller (SHC)

> A privilege escalation flaw in Bosch Smart Home Controller allows restricted apps to gain default permissions after successful pairing.

- **Severity:** Medium 5.5 (`CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 May 2019
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-qfhr-mxhr-cf29

## What is CVE-2019-11896?

CVE-2019-11896 is a medium-severity vulnerability in Bosch Smart Home Controller, published on 29 May 2019. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A potential incorrect privilege assignment vulnerability exists in the 3rd party pairing mechanism of the Bosch Smart Home Controller (SHC) before 9.8.907 that may result in a restricted app obtaining default app permissions. In order to exploit the vulnerability, the adversary needs to have successfully paired an app, which requires user interaction.

Weakness: CWE-269 (Improper Privilege Management), CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2019-11896?

It affects 1 product.


Products: Bosch Smart Home Controller Firmware.

## How do I fix CVE-2019-11896?

No fix has been published for CVE-2019-11896 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-11896 being exploited?

There is no known exploitation of CVE-2019-11896 in the wild and no public exploit code.

## Other vulnerabilities in Bosch Smart Home Controller

- [CVE-2019-11891](https://insights.sbomify.com/CVE-2019-11891/): Incorrect privilege assignment in the app pairing mechanism of the Bosch Smart Home Controller (SHC) (high 8.0)
- [CVE-2019-11892](https://insights.sbomify.com/CVE-2019-11892/): Improper access control in the JSON-RPC interface of the Bosch Smart Home Controller (SHC) (high 7.5)
- [CVE-2019-11894](https://insights.sbomify.com/CVE-2019-11894/): Improper access control in the backup mechanism of the Bosch Smart Home Controller (SHC) (medium 5.7)
- [CVE-2019-11893](https://insights.sbomify.com/CVE-2019-11893/): Incorrect privilege assignment in the app permission update API of the Bosch Smart Home Controller (SHC) (medium 5.5)
- [CVE-2019-11895](https://insights.sbomify.com/CVE-2019-11895/): Improper access control in the JSON-RPC interface of the Bosch Smart Home Controller (SHC) (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-11896 and fix it if it is affected.

What it is: CVE-2019-11896 is a medium-severity vulnerability in Bosch Smart Home Controller, published on 29 May 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-11896 in the wild and no public exploit code.

Affected product: Bosch Smart Home Controller. 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-2019-11896/ (Markdown: https://insights.sbomify.com/CVE-2019-11896/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-11896
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-11896
- OSV: https://osv.dev/vulnerability/CVE-2019-11896

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-11896/
Summaries are generated and may contain mistakes; the official description above is the record.