Check Point Advisories

Microsoft Windows ITS Protocol Information Disclosure (CVE-2017-11927)

Vulnerability
Protection

Check Point Reference:	CPAI-2018-0007
Date Published:	3 Jan 2018
Severity:	Medium
Last Updated:	Thursday 04 January, 2018
Source:	Microsoft CVE-2017-11927
Industry Reference:	CVE-2017-11927
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Microsoft Windows Windows 7 for 32-bit Systems Service Pack 1 Microsoft Windows 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 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 10 for 32-bit Systems Microsoft Windows 10 for x64-based Systems Microsoft Windows 10 Version 1511 for 32-bit Systems Microsoft Windows 10 Version 1511 for x64-based Systems Microsoft Windows 10 Version 1607 for 32-bit Systems Microsoft Windows 10 Version 1607 for x64-based Systems Microsoft Windows 10 version 1703 (32-bit) Microsoft Windows 10 version 1703 (64-bit) Microsoft Windows 10 version 1709 (32-bits) Microsoft Windows 10 version 1709 (64-bits) Windows Server 2016 Windows Server 2016 (Server Core installation) Microsoft Windows 8.1 for 32-bit Systems Microsoft Windows 8.1 for x64-based Systems Microsoft Windows RT 8.1 Windows Server 2012 Windows Server 2012 (Server Core installation) Windows Server 2012 R2 Windows Server 2012 R2 (Server Core installation) Windows Server, version 1709 (Server Core Installation)
Vulnerability Description	An information disclosure vulnerability exists in Microsoft Windows. The vulnerability is due to improper parsing of the InfoTech Storage (ITS) protocol requests. A remote attacker could exploit this vulnerability by enticing a user to open a malicious webpage or URL.

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 ITS Protocol Information Disclosure (CVE-2017-11927) 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: Content Protection Violation.
Attack Information: Microsoft Windows ITS Protocol Information Disclosure (CVE-2017-11927)