PT-2014-16: Privilege Gaining in Siemens SIMATIC WinCC
Vulnerable platform
SIMATIC WinCC
Version: 7.2 and earlier
SIMATIC PCS7
Version: 8.0 and earlier
Link:
http://www.siemens.com/
Severity level
Severity level: Medium
Impact: Privilege Gaining
Access Vector: Remote
CVSS v2:
Base Score: 6.8
Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:P)
CVE: CVE-2014-4686
Platform description
Siemens WinCC is a part of Siemens SIMATIC HMI software that aimed to provide connection between an operator and PLCs that manage technological processes.
Vulnerability description
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
Advisory status
16.04.2014 - Vendor gets vulnerability details
23.07.2014 - Vendor releases fixed version and details
29.07.2014 - Public disclosure
Credits
The vulnerability was detected by Alexander Tlyapov and Sergey Gordeychik, Positive Research Center (Positive Technologies Company)
References
http://en.securitylab.ru/lab/PT-2014-16
http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-214365.pdf
Reports on the vulnerabilities previously discovered by Positive Research:
http://www.ptsecurity.com/research/advisory/
http://en.securitylab.ru/lab/