Check Point Advisories

RealFlex RealWin Tag Manipulation Buffer Overflow (CVE-2011-1563)

Vulnerability
Protection

Check Point Reference:	CPAI-2011-242
Date Published:	3 May 2011
Severity:	High
Last Updated:	Tuesday 01 December, 2015
Source:
Industry Reference:	CVE-2011-1563
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	RealWin is a SCADA (Supervisory Control And Data Acquisition) server product developed by RealFlex Technologies. SCADA is an industrial control system, in which a computer system monitors and controls an industrial, infrastructure or facility based process. A buffer overflow vulnerability has been reported in RealFlex RealWin SCADA server. The vulnerability is due to a boundary error in RealFlex RealWin SCADA server while handling FC_CTAGLIST_FCS_CADDTAG, FC_CTAGLIST_FCS_CDELTAG, and FC_CTAGLIST_FCS_ADDTAGMS requests sent to the server. A remote attacker could exploit this vulnerability via a specially crafted packet. Successful exploitation would cause a stack buffer overflow that could lead to a denial of service condition and may allow the attacker to execute arbitrary code on the vulnerable system.

Protection Overview

This protection detects and blocks malformed requests sent to the vulnerable server.

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 RealFlex RealWin Tag Manipulation 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: RealFlex RealWin tag manipulation buffer overflow