Check Point Advisories

Microsoft Windows Fax Services Cover Page Editor Heap Buffer Overflow (CVE-2010-3974; CVE-2010-4701)

Vulnerability
Protection

Check Point Reference:	CPAI-2011-001
Date Published:	5 Jan 2011
Severity:	High
Last Updated:	Wednesday 05 January, 2011
Source:
Industry Reference:	CVE-2010-3974 CVE-2010-4701
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description	A heap buffer overflow vulnerability has been discovered in Microsoft Windows Fax Services. The Windows Fax Service is a component that allows a Windows system to act as a Fax server. One of the tools within this fax suite is the Fax Console, which allows a user to monitor the sending and receiving of faxes. A remote attacker may exploit this vulnerability to execute arbitrary code on a target system. The vulnerability is due to insufficient validation by the Windows Fax Services of a drawing object data while parsing Microsoft Fax cover page files. A remote attacker may exploit this issue by enticing the target user to open a specially crafted Fax cover page file. Successful exploitation of this vulnerability could result in execution of arbitrary code on the target system, and may terminate the affected application abnormally.

Protection Overview

This protection will detect and block the transferring of malformed Microsoft Fax cover page 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 Windows Fax Services Cover Page Editor Heap Buffer Overflow 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 Windows Fax Services cover page editor heap buffer overflow