Check Point Advisories

Microsoft SMB Create Response Remote Code Execution (MS11-043; CVE-2011-1268)

Check Point Reference: CPAI-2011-296
Date Published: 5 Jun 2011
Severity: Critical
Last Updated: Tuesday 08 August, 2023
Source: Microsoft MS11-043
Industry Reference:CVE-2011-1268
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description SMB Protocol is the file sharing protocol used by default on Windows-based computers. An unauthenticated remote code execution vulnerability exists in the way that the Microsoft Server Message Block (SMB) client implementation handles specially crafted SMB responses. The vulnerability is due to a improper parsing of Create responses. A remote attacker may exploit this issue by sending a specially crafted SMB packet to the target. Successful exploitation may allow execution of arbitrary code on a vulnerable system.
Update/Patch AvaliableApply patches from: MS11-043

Protection Overview

This protection will detect and block malicious SMB2 Create responses.

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 R81 / R80 / R77 / R75 / R71 / R70 / R65

  1. In the IPS tab, click Protections and find the Microsoft SMB Create Response Remote Code Execution (MS11-043) 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 SMB Create Response Remote Code Execution (MS11-043)

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