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  3. Microsoft Forefront Unified Access Gateway URI Open Redirection Vulnerability

Microsoft Forefront Unified Access Gateway URI Open Redirection Vulnerability

Risk

Medium

Date Discovered

April 10, 2012

Description

Microsoft Forefront Unified Access Gateway is prone to a URI open-redirection vulnerability because it fails to properly sanitize user-supplied input. An attacker can exploit this issue to spoof a UAG server or redirect legitimate network traffic intended for a UAG server. This may allow the attacker to masquerade as a legitimate server, aiding in further attacks.

Technologies Affected

  • Microsoft Forefront Unified Access Gateway 2010 SP1
  • Microsoft Forefront Unified Access Gateway 2010 Update 1

Recommendations

Do not follow links provided by unknown or untrusted sources.

Web users should be cautious about following links to sites that are provided by unfamiliar or suspicious sources. Filtering HTML from emails may help remove a possible vector for transmitting malicious links to users.

Set web browser security to disable the execution of script code or active content.

Since a successful exploit of this issue allows malicious code to execute in web clients, consider disabling support for script code and active content within the client browser. Note that this mitigation tactic might adversely affect legitimate websites that rely on the execution of browser-based script code.
Vendor updates are available. Please see the references for details.

Credits

Microsoft
Copyright © Symantec Corporation.
Permission to redistribute this alert electronically is granted as long as it is not edited in any way unless authorized by Symantec Security Response. Reprinting the whole or part of this alert in any medium other than electronically requires permission from secure@symantec.com.

Disclaimer
The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information.
Symantec, Symantec products, Symantec Security Response, and secure@symantec.com are registered trademarks of Symantec Corp. and/or affiliated companies in the United States and other countries. All other registered and unregistered trademarks represented in this document are the sole property of their respective companies/owners.

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