Overview ICS-CERT Advisory ICSA-11-175-02P was originally released to the US-CERT Portal on June 24, 2011. This web page release was delayed to allow users sufficient time to download and install the update. ICS-CERT has received a report from independent security researchers Billy Rios and Terry McCorkle concerning exploitable crashes in the Siemens SIMATIC WinCC SCADA product. Specially crafted files can cause memory corruption or pointer issues, which can cause the system to crash.

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ICS-CERT has coordinated with the researchers and Siemens to assist with releasing an update that successfully mitigates these vulnerabilities. The researchers have validated that this update successfully mitigates these vulnerabilities. Affected Products Siemens reports that this vulnerability affects the following versions of WinCC: • ProTool 6.0 SP3 (has been phased-out) • WinCC flexible 2004 (has been phased-out) • WinCC flexible 2005 (has been phased-out) • WinCC flexible 2005 SP1 • WinCC flexible 2007 • WinCC flexible 2008 • WinCC flexible 2008 SP1 • WinCC flexible 2008 SP2. Impact Successful exploitation of this vulnerability results in a memory corruption, which could be used to execute arbitrary code. Impact to individual organizations depends on many factors that are unique to each organization. ICS-CERT recommends that organizations evaluate the impact of this vulnerability based on their environment, architecture, and product implementation.

Background The Siemens SIMATIC WinCC is a software package used to develop network-based plant visualization systems. WinCC can be configured as a stand-alone SCADA system or as the human-machine interface component of a larger SIMATIC system. WinCC is used in many industries including: food and beverage, water and wastewater, oil and gas, and chemical. Daz3d Genesis Fit Control. Vulnerability Characterization Vulnerability Overview The following vulnerabilities have been identified. • Memory Corruption: client side exploit that allows arbitrary code execution.