PT-2013-30: Denial of Service in Siemens Simatic WinCC TIA Portal

Vulnerable software

Siemens Simatic WinCC TIA Portal
Version: 11.x

Application link:
http://www.siemens.com/

Severity level

Severity level: Medium
Impact: Denial of Service
Access Vector: Remote

CVSS v2:
Base Score: 4.0
Vector: (AV:N/AC:L/Au:S/C:N/I:N/A:P)

CVE: CVE-2013-0669

Software description

WinCC TIA Portal is part of a new, integrated engineering concept which offers a uniform engineering environment for programming and configuration of control, visualization and drive solutions.

Vulnerability description

The specialists of the Positive Research center have detected “Denial of Service” vulnerability in Siemens Simatic WinCC TIA Portal.

By manipulating HTTP requests an authenticated attacker may crash the HMI’s web application. The web application will become unavailable until the device is restarted.

How to fix

Update your software up to the latest version

Advisory status

21.09.2012 - Vendor gets vulnerability details
15.03.2013 - Vendor releases fixed version and details
29.03.2013 - Public disclosure

Credits

The vulnerability was discovered by Roman Ilin, Artem Chaykin, Ilya Karpov, Positive Research Center (Positive Technologies Company)

References

<http://en.securitylab.ru/lab/PT-2013-30&gt;
<http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-212483.pdf&gt;

Reports on the vulnerabilities previously discovered by Positive Research:

<http://ptsecurity.com/research/advisory/&gt;
<http://en.securitylab.ru/lab/&gt;