Check Point Advisories

Microsoft Remote Desktop Connection DWORD Heap Overflow (MS09-044; CVE-2009-1133)

Check Point Reference: CPAI-2009-157
Date Published: 11 Aug 2009
Severity: Critical
Last Updated: Tuesday 06 September, 2011
Source:
Industry Reference:CVE-2009-1133
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description A remote code execution vulnerability has been reported in the way Microsoft Remote Desktop Connection processes specific parameters returned by the RDP server. The Microsoft Remote Desktop Protocol (RDP) provides remote display and input capabilities over network connections for Microsoft Windows-based applications running on a server. A remote attacker can exploit this vulnerability by convincing a user to visit a specially crafted Web page. Successful exploitation could result in execution of arbitrary code on the affected system. The vulnerability is due to the way Microsoft Remote Desktop Connection processes specific parameters returned by the RDP server, which results in a heap overflow on the client that can be leveraged by the attacker to execute arbitrary code with the privileges of the logged-in user. 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 malformed RDP traffic

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 Microsoft Remote Desktop Connection DWORD Heap Overflow (MS09-044) 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:  RDP Enforcement Violation.
Attack Information:  Microsoft Remote Desktop Connection DWORD heap overflow (MS09-044)

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