Siemens SIMATIC S7-1200 CPU Family Version 4 (ICSA-18-282-04) – Product Used in the Water and Wastewater and Energy Sectors
The NCCIC has released an advisory on a cross-site request forgery (CSRF) vulnerability in SIMATIC S7-1200 CPU Version 4. All versions prior to 4.2.3 are affected. Successful exploitation of this vulnerability could allow a CSRF attack if an unsuspecting user is tricked into accessing a malicious link. Siemens provides a firmware update (v4.2.3) and recommends users update to the new version. To reduce the risk, Siemens recommends users not visit other websites while being authenticated against the PLC.