CVE-2019-11894 Improper access control in the backup mechanism of the Bosch Smart Home Controller (SHC)

Medium 5.7 Published 29 May 2019 Updated 17 Sep 2024

An attacker can unauthorizedly download a backup file from the Bosch Smart Home Controller if they time their request immediately after a legitimate user triggers a backup.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2019-11894?

CVE-2019-11894 is a medium-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, and only if a user opens a file or follows a link.

Official description

A potential improper access control vulnerability exists in the backup mechanism of the Bosch Smart Home Controller (SHC) before 9.8.905 that may result in unauthorized download of a backup. In order to exploit the vulnerability, the adversary needs to download the backup directly after a backup triggered by a legitimate user has been completed.

Weakness: CWE-284

Which versions are affected by CVE-2019-11894?

It affects 1 product.

Products include Bosch Smart Home Controller Firmware.

How do I fix CVE-2019-11894?

No fix has been published for CVE-2019-11894 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-2019-11894 being exploited?

There is no known exploitation of CVE-2019-11894 in the wild and no public exploit code.

Sources

Also known as GHSA-24rh-9j38-whw9.