PT-2013-27: Directory Traversal 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: Arbitrary Files Reading Access Vector: Remote CVSS v2: Base Score: 4.0 Vector: (AV:N/AC:L/Au:S/C:P/I:N/A:N)CVE: CVE-2013-0679Software 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 "Directory Traversal" vulnerability in Siemens Simatic WinCC and PCS 7.Authenticated users may manipulate the URL in the web browser to access the file system of the web server. With this vulnerability they may read all the files that are readable in the web server context.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 Bobrov, Positive Research Center (Positive Technologies Company)Referenceshttp://en.securitylab.ru/lab/PT-2013-27 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/
