Check Point Advisories

Microsoft WordPad Converter sprm Record Parsing Code Execution (MS11-033; CVE-2011-0028)

Vulnerability
Protection

Check Point Reference:	CPAI-2011-219
Date Published:	12 Apr 2011
Severity:	High
Last Updated:	Tuesday 12 April, 2011
Source:
Industry Reference:	CVE-2011-0028
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description	WordPad Text Converters allow users who do not have Microsoft Office Word installed to open documents in other Microsoft Windows applications. A remote code execution vulnerability has been reported in Microsoft WordPad. The vulnerability is due to an error in the WordPad converter that fails to correctly parse the sprmTTextFlow and the sprmTSplit fields in a Word document. A remote attacker could trigger this flaw by convincing a victim to open a specially crafted document. Successful exploitation of this issue allows execution of arbitrary code once a malformed file is being loaded on a vulnerable system.

Protection Overview

This protection will detect and block the transferring of malformed Word files over HTTP.

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

In the IPS tab, click Protections and find the Microsoft WordPad Converter sprm Record Parsing Code Execution (MS11-033) 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: Content Protection Violation.
Attack Information: Microsoft WordPad Converter sprm record parsing code execution (MS11-033)