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Category:   Application (Generic)  >   Microsoft Forefront Unified Access Gateway Vendors:   Microsoft
Microsoft Forefront Unified Access Gateway Input Validation Flaws Permit Cross-Site Scripting and URL Redirection Attacks
SecurityTracker Alert ID:  1024707
SecurityTracker URL:  http://securitytracker.com/id/1024707
CVE Reference:   CVE-2010-2732, CVE-2010-2733, CVE-2010-2734, CVE-2010-3936   (Links to External Site)
Date:  Nov 9 2010
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2010, 2010 Update 1, 2010 Update 2
Description:   Several vulnerabilities were reported in Microsoft Forefront Unified Access Gateway. A remote user can conduct cross-site scripting attacks.

The software does not properly filter HTML code from user-supplied input before displaying the input [CVE-2010-2733]. A remote user can cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the Microsoft Forefront Unified Access Gateway software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

A remote user can also conduct redirection spoofing attacks [CVE-2010-2732].

The mobile portal website is affected [CVE-2010-2734].

The 'signurl.asp' script is affected [CVE-2010-3936].

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the Microsoft Forefront Unified Access Gateway software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
Solution:   The vendor has issued the following fixes:

Forefront Unified Access Gateway 2010:

http://www.microsoft.com/downloads/details.aspx?familyid=5f2ee08e-e289-47db-bd3f-7b9cfc1eb985

Forefront Unified Access Gateway 2010 Update 1:

http://www.microsoft.com/downloads/details.aspx?familyid=db0b70c8-1fa5-4d92-9888-3500c7566b19

Forefront Unified Access Gateway 2010 Update 2:

http://www.microsoft.com/downloads/details.aspx?familyid=4e3ee07a-771c-46ee-959f-82389bab67d7

A restart may be required.

The Microsoft advisory is available at:

http://www.microsoft.com/technet/security/bulletin/ms10-089.mspx

Vendor URL:  www.microsoft.com/technet/security/bulletin/ms10-089.mspx (Links to External Site)
Cause:   Input validation error
Underlying OS:  Windows (2008)
Underlying OS Comments:  2008 R2

Message History:   None.


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