Check Point Advisories

SMB TRANS Request Buffer Overflow Remote Code Execution (MS09-001; CVE-2008-4834)

Vulnerability
Protection

Check Point Reference:	CPAI-2009-003
Date Published:	13 Jan 2009
Severity:	Critical
Last Updated:	Tuesday 13 January, 2009
Source:
Industry Reference:	CVE-2008-4834
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 way that Microsoft Server Message Block (SMB) Protocol handles specially crafted SMB packets. The vulnerability is due to insufficient validation of buffer size before writing to it, by the Microsoft SMB Protocol. A remote attacker could exploit this flaw via a specially crafted SMB TRANS 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 TRANS 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 SMB TRANS Request Buffer Overflow Remote Code Execution (MS09-001) 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: SMB TRANS request buffer overflow remote code execution (MS09-001)