PT-2013-26: Information Disclosure in Siemens Simatic WinCC and PCS 7 Vulnerable softwareSiemens Simatic WinCC Version: 7.0 SP3 and earlierSiemens Simatic PCS 7 Version: 8.0 and earlierApplication link: http://www.siemens.com/Severity levelSeverity level: Medium Impact: Information Disclosure Access Vector: Remote CVSS v2: Base Score: 4.0 Vector: (AV:N/AC:L/Au:S/C:P/I:N/A:N)CVE: CVE-2013-0676Software description Simatic 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 "Information Disclosure" vulnerability in Siemens Simatic WinCC and PCS 7.Users with legitimate, non-privileged access to WinCC MS SQL database can retrieve obfuscated user passwords for WebNavigator. For doing this, access to the system is needed either locally or from the adjacent network and the user’s account must have adequate permissions.How to fixUpdate your software up to the latest versionAdvisory status 11.07.2012 - Vendor gets vulnerability details 15.03.2013 - Vendor releases fixed version and details 29.03.2013 - Public disclosureCreditsThe vulnerability was discovered by Sergey Gordeychik, Positive Research Center (Positive Technologies Company)Referenceshttp://en.securitylab.ru/lab/PT-2013-26 http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-714398.pdf Reports on the vulnerabilities previously discovered by Positive Research:http://ptsecurity.com/research/advisory/ http://en.securitylab.ru/lab/
