PT-2014-16: 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: 6.8 Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:P)CVE: CVE-2014-4686Platform descriptionSiemens WinCC is a part of Siemens SIMATIC HMI software that aimed to provide connection between an operator and PLCs that manage technological processes.Vulnerability descriptionThe 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 fixUpdate your software up to the latest versionAdvisory status 16.04.2014 - Vendor gets vulnerability details 23.07.2014 - Vendor releases fixed version and details 29.07.2014 - Public disclosureCreditsThe vulnerability was detected by Alexander Tlyapov and Sergey Gordeychik, Positive Research Center (Positive Technologies Company)Referenceshttp://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/
