Consistent predictable generation of the password for the default admin user "ONEDAY" to the application services
E3 Site Supervisor (firmware version < 2.31F01) has a default admin user "ONEDAY" with a daily generated password. An attacker can predictably generate the password for ONEDAY. The oneday user cannot be deleted or modified by any user.
Upgrade firmware of affected E3 Supervisory Controls to a version > 2.30F1.
Configurations
Workarounds
Restrict access to the E3 Supervisory Controls network interface (ETH 0) by use of restricted VLAN or subnet and / or network firewall. Ensure the restricted VLAN or subnet is never accessible from untrusted networks.