Siemens SIMATIC STEP 7 (TIA Portal) V13 Privilege Escalation

The latest update for SIMATIC STEP 7 (TIA Portal) V13 fixes two vulnerabilities. Device user passwords in TIA portal project files are stored using a weak hashing algorithm. Attackers with read access to the project file could possibly reconstruct the passwords for device users. Privilege information for device users is stored unprotected in the TIA portal projects. Attackers with access to the project file could possibly read and modify the permissions for device users in the project file. If unsuspecting users are tricked to download the manipulated project files to the device, the user permissions become active.