PT-2012-43: Arbitrary Files Reading in Siemens Simatic WinCC WebNavigator Vulnerable softwareSiemens Simatic WinCC WebNavigator Version: 7.0 SP3 and earlierApplication link: http://www.siemens.com/Severity levelSeverity level: Medium Impact: Arbitrary Files Reading Access Vector: Remote CVSS v2: Base Score: 5.0 Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N)CVE: CVE-2012-3030Software 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. 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 "Arbitrary Files Reading" vulnerability in Siemens Simatic WinCC WebNavigator.Arbitrary file reading over the web interface was possible on the web folder on certain directories and files. An attacker with access to the WebNavigator web server can read data like log files and configuration files, which might have sensitive content.How to fixUpdate your software up to the latest versionAdvisory status16.07.2012 - Vendor is notified 16.07.2012 - Vendor gets vulnerability details 10.09.2012 - Vendor releases fixed version and details 13.09.2012 - Public disclosureCreditsThe vulnerability was discovered by Sergey Bobrov, Positive Research Center (Positive Technologies Company)Referenceshttp://en.securitylab.ru/lab/PT-2012-43 http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-864051.pdf Reports on the vulnerabilities previously discovered by Positive Research:http://ptsecurity.com/research/advisory/ http://en.securitylab.ru/lab/
