PT-2013-89: XML External Entities Resolution vulnerability in KingSCADA

(PT-2013-89) Positive Technologies Security Advisory
XML External Entities Resolution vulnerability in KingSCADA

Vulnerable software

KingSCADA
Version: 31.1.0.46 and possibly other

Link:
http://www.wellintech.com/index.php/kingscadaside

Severity level

Severity level: Medium
Impact: Internal Network Resources and File System Access, Denial of Service 
Access Vector: Remote

CVSS v2:
Base Score: 5.8
Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:P)

CVE: not assigned

Software description

KingSCADA is an Interactive Graphical SCADA System. It is a state of the art SCADA system for monitoring and controlling industrial processes.

Vulnerability description

The specialists of the Positive Research center have detected an XML External Entities Resolution vulnerability in KingSCADA.

The vulnerability is possible due to unsafe parsing of XML external entities. If an attacker manages to make a victim open a project that contains specially crafted XML, KingSCADA 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

Advisory status

14.03.2013 - Vendor gets vulnerability details
27.03.2014 - Vendor releases fixed version and details
13.05.2014 - Public disclosure

Credits

The vulnerability was detected by Timur Yunusov, Alexey Osipov and Ilya Karpov, Positive Research Center (Positive Technologies Company)

References

http://en.securitylab.ru/lab/PT-2013-89

Reports on the vulnerabilities previously discovered by Positive Research:

http://www.ptsecurity.com/research/advisory/
http://en.securitylab.ru/lab/

About Positive Technologies

Positive Technologies is a leading provider of vulnerability assessment, compliance management and threat analysis solutions to more than 1,000 global enterprise clients. Our solutions work seamlessly across your entire business: securing applications in development; assessing your network and application vulnerabilities; assuring compliance with regulatory requirements; and blocking real-time attacks. Our commitment to clients and research has earned Positive Technologies a reputation as one of the foremost authorities on SCADA, Banking, Telecom, Web Application and ERP security, and distinction as the #1 fastest growing Security and Vulnerability Management firm in 2012, as shown in an IDC report*. To learn more about Positive Technologies please visit www.ptsecurity.com

*Source: IDC Worldwide Security and Vulnerability Management 2013-2017 Forecast and 2012 Vendor Shares, doc #242465, August 2013. Based on year-over-year revenue growth in 2012 for vendors with revenues of $20M+