Phoenixcontact Plcnext Firmware vulnerabilities

CVE-2020-12517 [HIGH] CWE-79 CVE-2020-12517: On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS an authenticated low privilege On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS an authenticated low privileged user could embed malicious Javascript code to gain admin rights when the admin user visits the vulnerable website (local privilege escalation).

CVE-2020-12519 [HIGH] CWE-269 CVE-2020-12519: On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS an attacker can use this vulne On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS an attacker can use this vulnerability i.e. to open a reverse shell with root privileges.

CVE-2020-12521 [MEDIUM] CWE-20 CVE-2020-12521: On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS a specially crafted LLDP packe On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS a specially crafted LLDP packet may lead to a high system load in the PROFINET stack. An attacker can cause failure of system services or a complete reboot.

CVE-2020-12518 [MEDIUM] CWE-200 CVE-2020-12518: On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS an attacker can use the knowle On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS an attacker can use the knowledge gained by reading the insufficiently protected sensitive information to plan further attacks.