Check Point Advisories

Microsoft XML Core Services (MSXML) (MS15-039: CVE-2015-1646)

Vulnerability
Protection

Check Point Reference:	CPAI-2015-0457
Date Published:	14 Apr 2015
Severity:	Critical
Last Updated:	Thursday 24 June, 2021
Source:	Microsoft MS15-039
Industry Reference:	CVE-2015-1646
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Windows Server 2003 Service Pack 2 Windows Server 2003 x64 Edition Service Pack 2 Windows Server 2003 with SP2 for Itanium-based Systems Windows Vista Service Pack 2 Windows Vista x64 Edition 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 Itanium-based Systems Service Pack 2 Windows 7 for 32-bit Systems Service Pack 1 Windows Server 2008 R2 for x64-based Systems Service Pack 1 Windows Server 2008 R2 for Itanium-based Systems Service Pack 1 Windows Server 2008 for 32-bit Systems Service Pack 2 Windows Server 2008 for x64-based Systems Service Pack 2 Windows Server 2008 R2 for x64-based Systems Service Pack 1
Vulnerability Description	A security feature bypass vulnerability has been reported in Microsoft XML Core Services (MSXML). The vulnerability is due to a flaw that allows external entities in XML documents to be expanded into different-origin web site contents or local file contents. A remote attacker can exploit this issue by enticing a user to open a specially crafted web-page.
Update/Patch Avaliable	Apply patches from: MS15-039

Protection Overview

This protection will detect and block attempts to open a malicious HTML file.

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

In the IPS tab, click Protections and find the Microsoft XML Core Services (MSXML) (MS15-039: CVE-2015-1646) 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: Web Client Enforcement Violation.
Attack Information: Microsoft XML Core Services (MSXML) (MS15-039: CVE-2015-1646)