Check Point Advisories

IBM Informix Client SDK NFX File Processing Stack Buffer Overflow

Vulnerability
Protection

Check Point Reference:	CPAI-2009-432
Date Published:	2 Feb 2010
Severity:	High
Last Updated:	Tuesday 02 February, 2010
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	Informix is a family of relational database management system (RDBMS) products by IBM. It is positioned as IBM's flagship data server for online transaction processing (OLTP) as well as integrated solutions. IBM Informix Client Software Development Kit (SDK) is a package of several APIs that are used in developing applications for Informix servers. A code execution vulnerability has been reported to exist in IBM Informix Client SDK. The vulnerability is due to an stack buffer overflow when processing malformed ".nfx" files. In a successful attack scenario, where arbitrary code is injected and executed on the vulnerable target host, the behaviour of the target system is dependent on the malicious code. Note that any code executed by the attacker runs with the privileges of the logged in user.

Protection Overview

This protection will detect and block attempts to exploit this vulnerability.

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 IBM Informix Client SDK NFX File Processing 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: IBM Protection Violation.
Attack Information: IBM Informix Client SDK NFX file processing stack buffer overflow