Check Point Advisories

Microsoft Internet Explorer ASLR Bypass (MS15-065: CVE-2015-2421)

Check Point Reference: CPAI-2015-0801
Date Published: 14 Jul 2015
Severity: High
Last Updated: Tuesday 14 July, 2015
Source: Microsoft MS15-065
Industry Reference:CVE-2015-2421
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable? Internet Explorer 6
Internet Explorer 7
Internet Explorer 8
Internet Explorer 9
Internet Explorer 10
Internet Explorer 11
Vulnerability Description A security feature bypass vulnerability has been reported in Microsoft Internet Explorer. The vulnerability is due to improper implementation of the Address Space Layout Randomization (ASLR) security feature. A remote attacker can exploit this issue by enticing a user to open a specially crafted web-page with an affected version of Internet Explorer.
Update/Patch AvaliableApply patches from: MS15-065

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 R80 / R77 / R75

  1. In the IPS tab, click Protections and find the Microsoft Internet Explorer ASLR Bypass (MS15-065: CVE-2015-2421) protection using the Search tool and Edit the protection's settings.
  2. 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 ASLR Bypass (MS15-065: CVE-2015-2421)

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