PT-2014-16: Privilege Gaining in Siemens SIMATIC WinCC
Version: 7.2 and earlier
Version: 8.0 and earlier
Severity level: Medium
Impact: Privilege Gaining
Access Vector: Remote
Base Score: 6.8
Siemens 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 a Privilege Gaining vulnerability in SIMATIC WinCC.
A hard coded encryption key could allow privilege escalation in the WinCC Project administration application if its network communication on port 1030/tcp of a legitimate user can be captured.
How to fix
Update your software up to the latest version
16.04.2014 - Vendor gets vulnerability details
23.07.2014 - Vendor releases fixed version and details
29.07.2014 - Public disclosure
The vulnerability was detected by Alexander Tlyapov and Sergey Gordeychik, Positive Research Center (Positive Technologies Company)
Reports on the vulnerabilities previously discovered by Positive Research: