PT-2013-39: Improper Input Validation in Wonderware Information Server Vulnerable softwareWonderware Information Server Version 4.0 SP1, 4.5- Portal and 5.0- PortalApplication link: http://www.invensys.com/Severity levelSeverity level: Medium Impact: Information Disclosure, Denial of Service Access Vector: Local CVSS v2: Base Score: 6.3 Vector: (AV:L/AC:M/Au:N/C:C/I:N/A:C)CVE: CVE-2013-0686 Software descriptionWonderware Information Server aggregates and presents plant performance metrics and production data to operations, maintenance and engineering personnel, via an easy to implement web solution. Wonderware Information Server as well as Wonderware Intouch HMI are the part of a unified solution for building ArchestrA System Platform SCADA- and HMI-systems. This solution is used by personnel of nuclear power plants, chemical plants and other critically important objects.Vulnerability descriptionPositive Research Center experts have discovered "Improper Input Validation" vulnerability in Wonderware Information Server. WIS allows access to local resources (files and internal resources) via unsafe parsing of XML external entities. By using specially crafted XML files, an attacker can cause WIS to send the contents of local or remote resources to the attacker’s server or cause a denial of service (DoS) of the system.How to fixUpdate your software up to the latest version.Advisory status16.12.2012 - Vendor gets vulnerability details 23.04.2013 - Vendor releases fixed version and details 10.06.2013 - Public disclosureCreditsThese vulnerabilities have discovered by Ilya Karpov, Timur Yunusov, Alexey Osipov, Positive Research Center (Positive Technologies Company)Referenceshttp://en.securitylab.ru/lab/PT-2013-39 https://wdn.wonderware.com/sites/WDN/Pages/Downloads/Software.aspx https://ics-cert.us-cert.gov/advisories/ICSA-13-113-01 Reports on the vulnerabilities previously discovered by Positive Research:http://ptsecurity.com/research/advisory/ http://en.securitylab.ru/lab/
