PT-2013-29: Information Disclosure in Siemens Simatic WinCC and PCS 7
Siemens Simatic WinCC
Version: 7.0 SP3 and earlier
Siemens Simatic PCS 7
Version: 8.0 and earlier
Severity level: Medium
Impact: Information Disclosure, Denial of Service
Access Vector: Remote
Base Score: 5.8
Simatic WinCC is a part of Siemens SIMATIC HMI software that aimed to provide connection between an operator and PLCs that manage technological processes.
The specialists of the Positive Research center have detected "Information Disclosure" vulnerability in Siemens Simatic WinCC and PCS 7.
By opening a manipulated project file, sensitive data can be transmitted over the network or a DoS condition can be provoked.
How to fix
Update your software up to the latest version
02.08.2012 - Vendor gets vulnerability details
15.03.2013 - Vendor releases fixed version and details
29.03.2013 - Public disclosure
The vulnerability was discovered by Alexey Osipov, Timur Yunusov, Positive Research Center (Positive Technologies Company)
Reports on the vulnerabilities previously discovered by Positive Research: