PT-2013-78: Buffer overflow in SIMATIC WinCC Open Architecture
SIMATIC WinCC Open Architecture
Version: 3.12 and earlier
Severity level: High
Impact: Arbitrary Code Execution
Access Vector: Remote
Base Score: 9.3
SIMATIC WinCC Open Architecture is a SCADA system for visualizing and operating processes, production flows, machines and plants in all lines of business.
The specialists of the Positive Research center have detected a Buffer overflow vulnerability in SIMATIC WinCC Open Architecture.
The SIMATIC WinCC OA integrated Web server at Port 4999/TCP might allow attackers to perform remote code execution by sending specially crafted packets without authentication.
How to fix
Update your software up to the latest version
01.12.2013 - Vendor gets vulnerability details
03.02.2014 - Vendor releases fixed version and details
14.02.2014 - Public disclosure
The vulnerability was detected by Kirill Nesterov, Positive Research Center (Positive Technologies Company)
Reports on the vulnerabilities previously discovered by Positive Research: