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Update Protection against Microsoft Remote Desktop Client Connection ActiveX Heap Overflow Vulnerability (MS09-044)

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Check Point Reference: CPAI-2009-131
Date Published:
Severity:
Last Updated:
Source: Microsoft Security Bulletin MS09-044
Industry Reference(s): CVE-2009-1929
Protection Provided by: Security Gateway
  • R70
VPN-1
  • NGX R65
VSX
  • NGX R65
IPS-1
  • IPS-1
  • IPS-1 NGX R65
Who is Vulnerable?
Windows XP SP3
Windows Vista SP1
Windows Vista SP2
Windows Vista x64 Edition SP1
Windows Vista x64 Edition SP2
Windows Server 2008 for 32-bit Systems
Windows Server 2008 for 32-bit Systems SP2
Windows Server 2008 for x64-based Systems
Windows Server 2008 for x64-based Systems SP2
Windows Server 2008 (Itanium)
Windows Server 2008 (Itanium) SP2
Vulnerability Description
A remote code execution vulnerability has been reported in the Microsoft Terminal Services Client ActiveX control. 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 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.
Update/Patch Available
Apply patches:
Microsoft Security Bulletin MS09-044
Vulnerability Details
The vulnerability is due to an error in the Terminal Services Client 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/VPN-1 product to the latest IPS/SmartDefense update. For information on how to update IPS/SmartDefense, go to SBP-2006-05, Protection tab and select the version of your choice.

To configure the defense, select your product from the list below and follow the related protection steps.

Security Gateway R70

How Can I Protect My Network?
1. In the IPS tab, click Protections > By Protocol > Web Intelligence > HTTP Client Protections > Microsoft Internet Explorer Vulnerabilities.
2. In the right pane, double-click the Microsoft Remote Desktop Client Connection ActiveX Heap Overflow (MS09-044) protection.
3. In the Protection Details window, click on Edit. Choose the protection's Action (Override IPS Policy with: Prevent/Detect), and apply Additional Settings.
4. Install policy on all modules.

How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:

Attack Name: Web Client Enforcement Violation
Attack Information: Microsoft Remote Desktop client connection ActiveX heap overflow (MS09-044)

VPN-1 NGX R65

How Can I Protect My Network?
1. In the SmartDefense tab, click Web Intelligence > HTTP Client Protections > Microsoft Internet Explorer Vulnerabilities > Microsoft Remote Desktop Client Connection ActiveX Heap Overflow (MS09-044).
2. In the configuration pane, under Settings > Mode, check Active.
3. Install policy on all modules.

How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:

Attack Name: Web Client Enforcement Violation
Attack Information: Microsoft Remote Desktop client connection ActiveX heap overflow (MS09-044)

VPN-1 VSX NGX R65

How Can I Protect My Network?
1. In the SmartDefense tab, click Web Intelligence > HTTP Client Protections > Microsoft Internet Explorer Vulnerabilities > Microsoft Remote Desktop Client Connection ActiveX Heap Overflow (MS09-044).
2. In the configuration pane, under Settings > Mode, check Active.
3. Install policy on all modules.

How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:

Attack Name: Web Client Enforcement Violation
Attack Information: Microsoft Remote Desktop client connection ActiveX heap overflow (MS09-044)

IPS-1 & IPS-1 NGX R65

How Can I Protect My Network?
1. In the IPS-1 Policy Manager, click on the Protection tab.
2. In the Protection tree, click Application Intelligence > Badfiles, and select the ActiveX Parser protection group.
3. Click CVE-2009-1929 Remote Desktop Connection ActiveX Heap Overflow (MS09-044) (IPS-1 NGX R65 only).
4. In the configuration pane, under Settings, check Active.
5. Click on Install Policy.

How Do I Know if My Network is Under Attack?

Upon attack, the following entries will be logged:

Alert Name: Badfiles ActiveX class in HTML file Alert/Filter
Description: CVE-2009-1929 Remote Desktop Connection ActiveX Heap Overflow (MS09-044)