CVE-2019-11892 Improper access control in the JSON-RPC interface of the Bosch Smart Home Controller (SHC)

High 7.5 Published 29 May 2019 Updated 16 Sep 2024

An attacker with a paired app can read or modify the Bosch Smart Home Controller configuration and restore backups due to improper access control.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2019-11892?

CVE-2019-11892 is a high-severity missing authorization 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 improper access control vulnerability exists in the JSON-RPC interface of the Bosch Smart Home Controller (SHC) before 9.8.905 that may result in reading or modification of the SHC's configuration or triggering and restoring backups. In order to exploit the vulnerability, the adversary needs to have successfully paired an app or service, which requires user interaction.

Weakness: CWE-284

Which versions are affected by CVE-2019-11892?

It affects 1 product.

Products include Bosch Smart Home Controller Firmware.

How do I fix CVE-2019-11892?

No fix has been published for CVE-2019-11892 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2019-11892 being exploited?

There is no known exploitation of CVE-2019-11892 in the wild and no public exploit code.

Sources

Also known as GHSA-grxx-cf5f-hrxv.