Check Point Advisories

Microsoft Windows Search Remote Code Execution (CVE-2017-11771)

Vulnerability
Protection

Check Point Reference:	CPAI-2017-0891
Date Published:	1 Nov 2017
Severity:	Critical
Last Updated:	Thursday 02 November, 2017
Source:	Microsoft CVE-2017-11771
Industry Reference:	CVE-2017-11771
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Windows 7 for 32-bit Systems Service Pack 1 Windows 7 for x64-based Systems Service Pack 1 Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 Windows Server 2008 R2 for x64-based Systems Service Pack 1 Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) Windows Server 2012 Windows Server 2012 (Server Core installation) Windows 8.1 for 32-bit systems Windows 8.1 for x64-based systems Windows Server 2012 R2 Windows RT 8.1 Windows Server 2012 R2 (Server Core installation) Windows 10 for 32-bit Systems Windows 10 for x64-based Systems Windows 10 Version 1511 for x64-based Systems Windows 10 Version 1511 for 32-bit Systems Windows Server 2016 Windows 10 Version 1607 for 32-bit Systems Windows 10 Version 1607 for x64-based Systems Windows Server 2016 (Server Core installation) Windows 10 Version 1703 for 32-bit Systems Windows 10 Version 1703 for x64-based Systems Windows Server 2008 for Itanium-Based Systems Service Pack 2 Windows Server 2008 for 32-bit Systems Service Pack 2 Windows Server 2008 for x64-based Systems Service Pack 2 Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) Microsoft Windows 8 Microsoft Windows Server 2003 Microsoft Windows Vista Microsoft Windows XP
Vulnerability Description	A remote code execution vulnerability exists in the Windows Search service of Microsoft Windows. The vulnerability is due to improper handling of objects in memory. A remote, unauthenticated attacker can exploit this vulnerability by sending a crafted request to the target system.

Protection Overview

This protection detects attempts to exploit this vulnerability.

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 Microsoft Windows Search Remote Code Execution (CVE-2017-11771) 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 Search Remote Code Execution (CVE-2017-11771)