ICSA-15-006-01

No authentication mechanism was used for new socket connections to SCADA protocol listening ports on the Form 6 control and Idea/IdeaPLUS relays. The effects of exploiting this vulnerability are the same as the effects of an attacker connecting directly to the control or network and listening for or initiating a new session, without exploiting any vulnerabilities. This underscores the importance of deploying network segmentation and isolation on the control system network. By ensuring that controls are not accessible from external networks and that appropriate physical security measures are provided at network access points, risks associated with this vulnerability are greatly minimized.