PT-2013-36: XML External Entity Injection in Wonderware Win-XML Exporter
Wonderware Win-XML Exporter
Version: 15220.127.116.11 and earlier
Severity level: Medium
Impact: Internal Network Resources and File System Access, Denial of Service
Access Vector: Remote
Base Score: 6.3
Wonderware Win-XML Exporter converts interface windows from Intouch HMI projects and displays them in Internet Explorer with the help of Wonderware Information Server.
Positive Research Center experts have discovered "XML External Entity Injection" vulnerability in Wonderware Win-XML Exporter.
If an attacker manages to make a victim open a project that contains specially crafted XML, Wonderware Win-XML Exporter will automatically send the contents of local or remote resource to the attacker's server. It also makes possible to conduct denial of service attacks.
How to fix
Update your software up to the latest version.
22.11.2012 - Vendor gets vulnerability details
21.03.2013 - Vendor releases fixed version and details
03.04.2013 - Public disclosure
The vulnerability was discovered by Timur Yunusov, Alexey Osipov, Ilya Karpov, Positive Research Center (Positive Technologies Company)
Reports on the vulnerabilities previously discovered by Positive Research: