CVE-2023-45851 Missing authorization in ctrlX HMI Web Panel - WR21 (WR2107)

High 8.8 Published 25 Oct 2023 Updated 11 Sep 2024

An attacker can force the Android client to connect to a malicious MQTT broker, allowing injection of fake messages to the HMI device.

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-2023-45851?

CVE-2023-45851 is a high-severity missing authorization vulnerability in Bosch Rexroth AG ctrlX HMI Web Panel - WR21 (WR2107), published on 25 Oct 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The Android Client application, when enrolled to the AppHub server,connects to an MQTT broker without enforcing any server authentication. This issue allows an attacker to force the Android Client application to connect to a malicious MQTT broker, enabling it to send fake messages to the HMI device

Weakness: CWE-306

Which versions are affected by CVE-2023-45851?

It affects 3 products.

Products include Boschrexroth Ctrlx Hmi Web Panel Wr2107 Firmware, Boschrexroth Ctrlx Hmi Web Panel Wr2110 Firmware, Boschrexroth Ctrlx Hmi Web Panel Wr2115 Firmware.

How do I fix CVE-2023-45851?

No fix has been published for CVE-2023-45851 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-2023-45851 being exploited?

There is no known exploitation of CVE-2023-45851 in the wild and no public exploit code.

Sources

Also known as GHSA-v7pg-gp89-mfh2.