Check Point Advisories

Siemens SIMATIC WinCC Flexible SCADA Runtime Stack Buffer Overflow

Vulnerability
Protection

Check Point Reference:	CPAI-2012-093
Date Published:	26 Mar 2012
Severity:	High
Last Updated:	Sunday 28 July, 2013
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	A stack buffer overflow vulnerability has been reported in Siemens SIMATIC WinCC Flexible. The vulnerability is due to insufficient validation of user-supplied length value. A remote attacker may exploit this issue by sending a specially crafted request to an affected product.

Protection Overview

This protection will detect and block attempts to transfer malicious requests.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

In the IPS tab, click Protections and find the Siemens SIMATIC WinCC Flexible SCADA Runtime Stack Buffer Overflow protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Application Servers Protection Violation.
Attack Information: Siemens SIMATIC WinCC Flexible SCADA Runtime Stack Buffer Overflow