PT-2013-89: 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 ServiceĀ 
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/

Threatscape