Check Point Advisories

Microsoft Windows SMB Credential Reflection Remote Code Execution (MS08-068; CVE-2008-4037)

Check Point Reference: SBP-2008-12
Date Published: 11 Nov 2008
Severity: High
Last Updated: Tuesday 11 November, 2008
Source:
Industry Reference:CVE-2008-4037
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description SMB reflection attacks is a type of "Man-in-the-Middle" (MITM) attack in which an attacker reflects the clients SMB challenge back to the client and by that bypass security, allowing the attacker to execute code in the context of the logged-on user. A remote code execution vulnerability has been reported in the way that Microsoft Server Message Block (SMB) Protocol handles NTLM credentials when a user connects to an attacker's SMB server. Microsoft Server Message Block (SMB) Protocol is a Microsoft network file sharing protocol. The SMB protocol does not correctly validate specific parameters within the SMB connection to ensure that a user's credentials are not reflected back and used against the user. An attacker who successfully executed an SMB reflection attack could take complete control of an affected system.

Protection Overview

This protection will detect and block SMB reflection attacks.

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

  1. In the IPS tab, click Protections and find the Microsoft Windows SMB Credential Reflection Remote Code Execution (MS08-068) protection using the Search tool and Edit the protection's settings.
  2. 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 credential reflection remote code execution (MS08-068)

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