Check Point Advisories

IBM Informix Dynamic Server librpc.dll Multiple Buffer Overflows (CVE-2009-2753)

Vulnerability
Protection

Check Point Reference:	CPAI-2010-403
Date Published:	24 May 2010
Severity:	Critical
Last Updated:	Tuesday 10 November, 2015
Source:
Industry Reference:	CVE-2009-2753
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. IBM Informix Dynamic Server is an online transaction processing data server. Multiple buffer overflow vulnerabilities has been reported in IBM's Informix Dynamic Server. The vulnerabilities are due to insufficient validation of user inputs during authentication by the RPC protocol parsing library, librpc.dll. A remote attacker may exploit this issue by sending malicious RPC packets to the target server. Successful exploitation of these vulnerabilities would cause heap and stack based buffer overflows which can lead to arbitrary code execution in the context of the affected service.

Protection Overview

This protection will detect and block attempts to exploit these vulnerabilities.

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 Dynamic Server librpc.dll Multiple Buffer Overflows 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: Database Protection Violation.
Attack Information: IBM Informix Dynamic Server librpc.dll multiple buffer overflows