Check Point Advisories

Microsoft Forefront UAG Signurl.asp Cross-Site Scripting (MS10-089; CVE-2010-3936)

Check Point Reference: CPAI-2011-076
Date Published: 15 Mar 2011
Severity: High
Last Updated: Tuesday 15 March, 2011
Source:
Industry Reference:CVE-2010-3936
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description 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 cross-site scripting vulnerability has been reported in Microsoft Forefront Unified Access Gateway (UAG). 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 would result in compromise of web browser cookies (including authentication 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, 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 Forefront UAG Signurl.asp Cross-Site Scripting (MS10-089) 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:  Security Products Enforcement Violation.
Attack Information:  Microsoft Forefront UAG Signurl.asp cross-site scripting (MS10-089)

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