Siemens SIMATIC STEP 7 (TIA Portal) 12 and 13 before 13 SP1 Upd1 improperly stores password data within project files, which makes it easier for local users to determine cleartext (1) protection-level passwords or (2) web-server passwords by leveraging the ability to read these files.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1602
Reference (s):
- http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-315836.pdf