WAGO: Boot Mode Manipulation in Multiple Devices
A low privileged remote attacker may modify the boot mode configuration setup of the device, leading to modification of the firmware upgrade process or a denial-of-service attack.
A low privileged remote attacker may modify the boot mode configuration setup of the device, leading to modification of the firmware upgrade process or a denial-of-service attack.
During a short time frame while the device is booting an unauthenticated remote attacker can send traffic to unauthorized networks due to the switch operating in an undefined state until a CPU-induced reset allows proper configuration.
An authenticated remote attacker with high privileges can exploit the OpenVPN configuration via the web-based management interface of a WAGO PLC. If user-defined scripts are permitted, OpenVPN may allow the execution of arbitrary shell commands enabling the attacker to run arbitrary commands on the device.
The vulnerability allows a remote unauthenticated attacker to download a backup file, if one exists. That backup file might contain sensitive information like credentials and cryptographic material. A valid user has to create a backup after the last reboot for this attack to be successfull.