Check Point Advisories

Internet Explorer Data Stream Header Corruption (MS09-054; CVE-2009-1547)

Check Point Reference: CPAI-2009-220
Date Published: 13 Oct 2009
Severity: Critical
Last Updated: 13 Jun 2017
Industry Reference:CVE-2009-1547
Protection Provided by:

Security Gateway
R80, R77, R75, R71, R70, R65

Who is Vulnerable?
Vulnerability Description Microsoft Internet Explorer is the most widely used Internet browser. A remote code execution vulnerability exists in the way Internet Explorer processes data stream headers. The vulnerability occurs when Internet Explorer processes a specially crafted data stream header, it may corrupt system memory in such a way that an attacker could execute arbitrary code on the vulnerable system.

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 / R65

  1. In the IPS tab, click Protections and find the Internet Explorer Data Stream Header Corruption (MS09-054) 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 data stream header corruption (MS09-054)

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