Check Point Advisories

Microsoft Remote Desktop Client Connection ActiveX Heap Overflow (MS09-044; CVE-2009-1929)

Vulnerability
Protection

Check Point Reference:	CPAI-2009-131
Date Published:	11 Aug 2009
Severity:	Critical
Last Updated:	Monday 12 January, 2015
Source:
Industry Reference:	CVE-2009-1929
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description	The Microsoft Remote Desktop Protocol (RDP) provides remote display and input capabilities over network connections for Microsoft Windows-based applications running on a server. The Remote Desktop Web Connection ActiveX control allows accessing a computer, via the Internet, from another computer using Internet Explorer. A remote code execution vulnerability has been reported in the Microsoft Terminal Services Client ActiveX control. The vulnerability is due to an error in the ActiveX control methods that fail to perform sufficient parameter validation. A remote attacker could exploit this issue by convincing a user to visit a malicious Web page. Successful exploitation of this issue could allow remote code execution on the affected 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

In the IPS tab, click Protections and find the Microsoft Remote Desktop Client Connection ActiveX Heap Overflow (MS09-044) 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: Web Client Enforcement Violation.
Attack Information: Microsoft Remote Desktop client connection ActiveX heap overflow (MS09-044)