Check Point Advisories

Microsoft Internet Explorer Use After Free Remote Code Execution (MS15-109: CVE-2015-2548)

Vulnerability
Protection

Check Point Reference:	CPAI-2015-1163
Date Published:	13 Oct 2015
Severity:	Critical
Last Updated:	Sunday 18 October, 2015
Source:	Microsoft MS15-109
Industry Reference:	CVE-2015-2548
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Internet Explorer 7 Internet Explorer 8 Internet Explorer 9 Internet Explorer 10 Internet Explorer 11
Vulnerability Description	A use after free vulnerability exists in Microsoft Internet Explorer. The vulnerability is due to an error while handling certain objects when processing HTML and script code. A remote unauthenticated attacker could exploit this vulnerability by enticing the target user to open a specially crafted web page. Successful exploitation could lead to arbitrary code execution in the security context of the current logged in user
Update/Patch Avaliable	Apply patches from: MS15-109

Protection Overview

This protection will detect and block 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 Internet Explorer Use After Free Remote Code Execution (MS15-109: CVE-2015-2548) 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 Internet Explorer Use After Free Remote Code Execution (MS15-109: CVE-2015-2548)