PT-2014-14: Privilege Gaining in Siemens SIMATIC WinCC

Vulnerable platform

SIMATIC WinCC
Version: 7.2 and earlier

SIMATIC PCS7
Version: 8.0 and earlier

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

Severity level

Severity level: Medium
Impact: Privilege Gaining
Access Vector: Remote

CVSS v2:
Base Score: 6.0
Vector: (AV:N/AC:M/Au:S/C:P/I:P/A:P)

CVE: CVE-2014-4684

Platform description

Siemens WinCC is a part of Siemens SIMATIC HMI software that aimed to provide connection between an operator and PLCs that manage technological processes.

Vulnerability description

The specialists of the Positive Research center have detected a Privilege Gaining vulnerability in SIMATIC WinCC.

The database server of SIMATIC WinCC could allow authenticated users to escalate their privileges in the database if a specially crafted command is sent to the database server at port 1433/tcp.

How to fix

Update your software up to the latest version

Advisory status

08.01.2014 - Vendor gets vulnerability details
23.07.2014 - Vendor releases fixed version and details
29.07.2014 - Public disclosure

Credits

The vulnerability was detected by Dmitry Nagibin and Gleb Gritsai, Positive Research Center (Positive Technologies Company)

References

http://en.securitylab.ru/lab/PT-2014-14
http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-214365.pdf

Reports on the vulnerabilities previously discovered by Positive Research:

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