(PT-2015-13) Positive Technologies Security Advisory
Unauthorized Access in Siemens SIMATIC HMI Devices

Vulnerable software

Siemens SIMATIC HMI Basic Panels 2nd Generation
Siemens SIMATIC HMI Comfort Panels
Siemens SIMATIC WinCC Runtime Advanced
Siemens SIMATIC WinCC Runtime Professional
Siemens SIMATIC HMI Basic Panels 1st Generation
Siemens SIMATIC HMI Mobile Panel 277
Siemens SIMATIC HMI Multi Panels
Siemens SIMATIC WinCC (TIA Portal)
Version: 13 SP1 Upd1 and earlier

Siemens SIMATIC WinCC
Версия: 7.3 Upd3 and earlier

Link:
http://www.siemens.com/

Severity level

Severity level: Medium
Impact: Unauthorized Access
Access Vector: Remote

CVSS v2:
Base Score: 6.8
Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVE: CVE-2015-2823

Software description

SIMATIC HMI Panels and SIMATIC WinCC Runtime Advanced are used for operator control and monitoring of machines and plants.

Vulnerability description

The specialists of the Positive Research center have detected a Unauthorized Access vulnerability in Siemens SIMATIC HMI Devices.

The vulnerability allows remote attackers to obtain password hashes for SIMATIC WinCC users and complete authentication.

How to fix

Update your sofware up to the latest version

Advisory status

22.04.2014 - Vendor gets vulnerability details
08.04.2015 - Vendor releases fixed version and details
23.07.2015 - Public disclosure

Credits

The vulnerability was detected by Ilya Karpov, Positive Research Center (Positive Technologies Company)

References

http://en.securitylab.ru/lab/PT-2015-13
http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-487246.pdf

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+