Check Point Advisories

Microsoft Internet Explorer VBScript Memory Corruption (MS15-053: CVE-2015-1684)

Vulnerability
Protection

Check Point Reference:	CPAI-2015-0568
Date Published:	7 Jun 2015
Severity:	High
Last Updated:	Sunday 02 August, 2015
Source:	Microsoft MS15-053
Industry Reference:	CVE-2015-1684
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Microsoft Internet Explorer 6 Microsoft Internet Explorer 7 Microsoft Internet Explorer 8 Microsoft Internet Explorer 9 Microsoft Internet Explorer 10 Microsoft Internet Explorer 11
Vulnerability Description	A security feature bypass vulnerability has been reported in Microsoft Internet Explorer. The vulnerability is due an error while processing regular expressions which allows a user to disclose memory contents of the current process. A remote attacker can exploit this issue to bypass the ASLR security feature by enticing a user to open a specially crafted web-page with an affected version of Internet Explorer.
Update/Patch Avaliable	Apply patches from: MS15-053

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 VBScript Memory Corruption (MS15-053: CVE-2015-1684) 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 VBScript Memory Corruption (MS15-053: CVE-2015-1684)