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Update Protection against Microsoft Internet Connection Signup Wizard Insecure DLL Loading Vulnerability (MS10-097)

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Check Point Reference: CPAI-2010-344
Date Published:
Severity:
Source: Microsoft Security Bulletin MS10-097
Industry Reference(s): CVE-2010-3144
Protection Provided by: Security Gateway
  • R71
  • R70
VPN-1
  • NGX R65
VSX
  • NGX R65
Who is Vulnerable?
Windows XP SP3
Windows XP Professional x64 Edition SP2
Windows Server 2003 SP2
Windows Server 2003 x64 Edition SP2
Windows Server 2003 with SP2 (Itanium)
Vulnerability Description
A remote code execution vulnerability has been reported in the way that the Internet Connection Signup Wizard handles the loading of DLL files. The Internet Connection Signup Wizard, a component of Microsoft Windows, enables users to configure a connection on a new computer, or to use an existing Internet service account that they had on a previous computer. Successful exploitation of this vulnerability may allow execution of arbitrary code on a target system.
Update/Patch Available
Apply patches:
Microsoft Security Bulletin MS10-097 
Vulnerability Details
The vulnerability is caused when the Internet Connection Signup Wizard improperly restricts the path used for loading external libraries. A remote attacker may exploit this issue by convincing a user to open a a .ins or .isp file that is located in the same network directory as a specially crafted dynamic link library (DLL) file. Then, while opening the file, the Internet Connection Signup Wizard may attempt to load the DLL file and execute any code it contained. Successful exploitation of this vulnerability could allow the attacker to take complete control of an affected system.

Protection Overview
This protection will detect and block the transferring of suspicious DLL files over CIFS. 

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/R71

How Can I Protect My Network?
1. In the IPS tab, click Protections > By Protocol > Application Intelligence > Microsoft Networks.
2. In the right pane, double-click the following protection:

Microsoft Internet Connection Signup Wizard Insecure DLL Loading (MS10-097)

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: Windows SMB Protection Violation
Attack Information: Microsoft Internet Connection Signup Wizard insecure DLL loading (MS10-097)

VPN-1 NGX R65 & VSX NGX R65

How Can I Protect My Network?
1. In the SmartDefense tab, click Application Intelligence > Microsoft Networks > Microsoft Internet Connection Signup Wizard Insecure DLL Loading (MS10-097).
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: Windows SMB Protection Violation
Attack Information: Microsoft Internet Connection Signup Wizard insecure DLL loading (MS10-097)