PT-2014-13: Privilege Gaining in Siemens SIMATIC WinCC Vulnerable platformSIMATIC WinCC Version: 7.2 and earlierSIMATIC PCS7 Version: 8.0 and earlierLink: http://www.siemens.com/Severity levelSeverity 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-2014-4683Platform descriptionSiemens 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 descriptionThe 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 fixUpdate your software up to the latest versionAdvisory status 23.12.2012 - Vendor gets vulnerability details 23.07.2014 - Vendor releases fixed version and details 29.07.2014 - Public disclosureCreditsThe vulnerability was detected by Alexander Tlyapov, Positive Research Center (Positive Technologies Company)Referenceshttp://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/
