(PT-2015-09) Positive Technologies Security Advisory
Information Disclosure in Siemens SIMATIC STEP 7 (TIA Portal)

Vulnerable software

Siemens SIMATIC STEP 7 (TIA Portal)
Version: 13 and earlier

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

Severity level

Severity level: Low
Impact: Information Disclosure
Access Vector: Local

CVSS v2:
Base Score: 2.1
Vector: (AV:L/AC:L/Au:N/C:P/I:N/A:N)

CVE: CVE-2015-1355

Software description

Siemens SIMATIC STEP 7 (TIA Portal) is an engineering software to configure and program SIMATIC controllers and Standard PCs running WinAC RTX.

Vulnerability description

The specialists of the Positive Research center have detected an Information Disclosure vulnerability in Siemens SIMATIC STEP 7 (TIA Portal).

Device user passwords in TIA portal project files are stored using a weak hashing algorithm. Attackers with read access to the project file could possibly reconstruct the passwords for device users.

How to fix

Update your sofware up to the latest version

Advisory status

21.09.2012 - Vendor gets vulnerability details
13.02.2015 - Vendor releases fixed version and details
25.02.2015 - Public disclosure

Credits

The vulnerability was detected by Alexander Timorin, Positive Research Center (Positive Technologies Company)

References

http://en.securitylab.ru/lab/PT-2015-09
http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-234789.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+