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Update Protection against Microsoft Forefront UAG Signurl.asp Cross-Site Scripting Vulnerability (MS10-089)

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Check Point Reference: CPAI-2011-076
Date Published:
Severity:
Source: Microsoft Security Bulletin MS10-089
Industry Reference(s): CVE-2010-3936
Protection Provided by: Security Gateway
  • R75
  • R71
  • R70
VPN-1
  • NGX R65
VSX
  • NGX R65
Who is Vulnerable?
Microsoft Forefront Unified Access Gateway 2010
Vulnerability Description
A cross-site scripting vulnerability has been reported in Microsoft Forefront Unified Access Gateway (UAG). Microsoft Forefront Unified Access Gateway (UAG) is designed to provide secure remote access to corporate resources for employees, partners and vendors from both managed and unmanaged PCs and mobile devices. UAG provides a variety of connection options including SSL VPN, Microsoft DirectAccess and IPSec as well as a centralized management of a single gateway solution. A remote attacker could exploit this issue to execute a cross-site scripting attack that could allow him to issue commands to the UAG server.
Update/Patch Available
Apply patches:
Microsoft Security Bulletin MS10-089
Vulnerability Details
The vulnerability is due to insufficient validation of user-supplied input in signurl.asp by the Microsoft Forefront UAG. A remote attacker can exploit this flaw by enticing a target to open a malicious URL link. Successful exploitation of this vulnerability would result in compromise of web browser cookies associated with the site, and modification of user information.

Protection Overview
This protection will detect and block malicious URL links attempting 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, 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: R75

How Can I Protect My Network?
1. In the IPS tab, click Protections > By Protocol > IPS Software Blade > Application Intelligence > Security Products.
2. In the right pane, double-click the Microsoft Forefront UAG Signurl.asp Cross-Site Scripting (MS10-089) 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: Security Products Enforcement Violation
Attack Information: Microsoft Forefront UAG Signurl.asp cross-site scripting (MS10-089)

Security Gateway: R70/R71

How Can I Protect My Network?
1. In the IPS tab, click Protections > By Protocol > Application Intelligence > Security Products.
2. In the right pane, double-click the Microsoft Forefront UAG Signurl.asp Cross-Site Scripting (MS10-089) 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: Security Products Enforcement Violation
Attack Information: Microsoft Forefront UAG Signurl.asp cross-site scripting (MS10-089)

VPN-1 NGX R65 & VSX NGX R65

How Can I Protect My Network?
1. In the SmartDefense tab, click Application Intelligence Security Products Microsoft Forefront UAG Signurl.asp Cross-Site Scripting (MS10-089).
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: Security Products Enforcement Violation
Attack Information: Microsoft Forefront UAG Signurl.asp cross-site scripting (MS10-089)