CVE-2019-11893 Incorrect privilege assignment in the app permission update API of the Bosch Smart Home Controller (SHC)

Medium 5.5 Published 29 May 2019 Updated 16 Sep 2024

A restricted app can obtain default permissions via the update API, allowing privilege escalation in Bosch Smart Home Controllers.

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

What is CVE-2019-11893?

CVE-2019-11893 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 app permission update API of the Bosch Smart Home Controller (SHC) before 9.8.905 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 with restricted permissions, which required user interaction.

Weakness: CWE-269, CWE-266

Which versions are affected by CVE-2019-11893?

It affects 1 product.

Products include Bosch Smart Home Controller Firmware.

How do I fix CVE-2019-11893?

No fix has been published for CVE-2019-11893 yet. Limit exposure of the affected software until one is available.

Is CVE-2019-11893 being exploited?

There is no known exploitation of CVE-2019-11893 in the wild and no public exploit code.

Sources

Also known as GHSA-422w-959p-3whv.