(PT-2014-13) Positive Technologies Security Advisory
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: 4.9
Vector: (AV:N/AC:M/Au:S/C:P/I:P/A:N)
CVE: CVE-2014-4683
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. The WebNavigator component of WinCC gives the users the possibility to control their plants via the web browser with the same look-and-feel like local operator stations.
Vulnerability description
The specialists of the Positive Research center have detected a Privilege Gaining vulnerability in SIMATIC WinCC.
Existing access control of the WinCC WebNavigator server at port 80/tcp and port 443/tcp could allow remote authenticated users to escalate their privileges in WinCC.
How to fix
Update your software up to the latest version
Advisory status
23.12.2012 - 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, Positive Research Center (Positive Technologies Company)
References
http://en.securitylab.ru/lab/PT-2014-13
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/
About Positive Technologies
Positive Technologies is a leading provider of vulnerability assessment, compliance management and threat analysis solutions to more than 1,000 global enterprise clients. Our solutions work seamlessly across your entire business: securing applications in development; assessing your network and application vulnerabilities; assuring compliance with regulatory requirements; and blocking real-time attacks. Our commitment to clients and research has earned Positive Technologies a reputation as one of the foremost authorities on SCADA, Banking, Telecom, Web Application and ERP security, and distinction as the #1 fastest growing Security and Vulnerability Management firm in 2012, as shown in an IDC report*. To learn more about Positive Technologies please visit www.ptsecurity.com
*Source: IDC Worldwide Security and Vulnerability Management 2013-2017 Forecast and 2012 Vendor Shares, doc #242465, August 2013. Based on year-over-year revenue growth in 2012 for vendors with revenues of $20M+
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