Check Point Advisories

Microsoft Windows SMB Negotiate Request Remote Code Execution (CVE-2009-2532; CVE-2009-3103)

Vulnerability
Protection

Check Point Reference:	CPAI-2009-194
Date Published:	9 Sep 2009
Severity:	Critical
Last Updated:	Monday 19 August, 2013
Source:
Industry Reference:	CVE-2009-2532 CVE-2009-3103
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description	The SMB Protocol is a network file sharing protocol that is implemented in Microsoft Windows. A remote code execution vulnerability has been reported in the Microsoft Server Message Block (SMB) Protocol. The vulnerability is due to a memory corruption error in the Microsoft Server Message Block (SMB) implementation that by incorrectly indexing an array when handling specially crafted SMB packets, fails to properly parse SMB negotiation requests. A remote attacker could exploit this flaw via a specially crafted SMB negotiation request. Successful exploitation could cause a denial of service condition and may allow execution of arbitrary code on the target system.

Protection Overview

This protection will detect and block malformed SMB negotiation 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 / R71 / R70 / R65

In the IPS tab, click Protections and find the Microsoft Windows SMB Negotiate Request Remote Code Execution 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: Windows SMB Protection Violation.
Attack Information: Microsoft Windows SMB Negotiate Request Remote Code Execution