Check Point Advisories

Internet Explorer Multiple Events Improper Reference Counting (MS09-019; CVE-2009-1530)

Check Point Reference: CPAI-2009-178
Date Published: 9 Jun 2009
Severity: Critical
Last Updated: Thursday 09 January, 2014
Source: Microsoft MS09-019
Industry Reference:CVE-2009-1530
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70
Who is Vulnerable? Internet Explorer 7 for Windows XP Service Pack 2 and Windows XP Service Pack 3
Internet Explorer 7 for Windows XP Professional x64 Edition Service Pack 2
Internet Explorer 7 in Windows Vista, Windows Vista Service Pack 1, and and Windows Vista Service Pack 2
Internet Explorer 7 in Windows Vista x64 Edition, Windows Vista x64 Edition Service Pack 1, and Windows Vista x64 Edition Service Pack 2
Vulnerability Description Microsoft Internet Explorer is the most widely used Internet browser. A remote code execution vulnerability has been reported in Microsoft Internet Explorer. The vulnerability is due to the way Internet Explorer accesses an object that has not been correctly initialized or has been deleted. To trigger this issue, an attacker may create a malicious web page that will cause Internet Explorer to access uninitialized memory, thereby corrupting memory in such a way that will allow execution of arbitrary code. Successful exploitation of this vulnerability will crash the browser, allowing execution of arbitrary code on the vulnerable system.
Update/Patch AvaliableApply patches from: MS09-019

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 / R71 / R70

  1. In the IPS tab, click Protections and find the Internet Explorer Multiple Events Improper Reference Counting (MS09-019) 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:  Internet Explorer multiple events improper reference counting (MS09-019)

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