Microsoft Security Bulletin MS12-026 - Important
Vulnerabilities in Forefront Unified Access Gateway (UAG) Could Allow Information Disclosure (2663860)
Published: | Updated:
This security update resolves two privately reported vulnerabilities in Microsoft Forefront Unified Access Gateway (UAG). The more severe of the vulnerabilities could allow information disclosure if an attacker sends a specially crafted query to the UAG server.
This security update is rated Important for Microsoft Forefront Unified Access Gateway 2010 Service Pack 1 and Microsoft Forefront Unified Access Gateway 2010 Service Pack 1 Update 1. For more information, see the subsection, Affected and Non-Affected Software, in this section.
The security update addresses the vulnerabilities by modifying UAG code to require further verification before redirecting a user to another website, and by modifying the UAG server's default binding settings to not allow unfiltered access to internal resources. For more information about the vulnerabilities, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.
Recommendation. Microsoft recommends that customers apply the update at the earliest opportunity.
See also the section, Detection and Deployment Tools and Guidance, later in this bulletin.
Known Issues. Microsoft Knowledge Base Article 2663860 documents the currently known issues that customers may experience when installing this security update. The article also documents recommended solutions for these issues. When currently known issues and recommended solutions pertain only to specific releases of this software, this article provides links to further articles.
The following software have been tested to determine which versions or editions are affected. Other versions or editions are either past their support life cycle or are not affected. To determine the support life cycle for your software version or edition, visit Microsoft Support Lifecycle.
|Software||Maximum Security Impact||Aggregate Severity Rating||Updates Replaced|
|Microsoft Forefront Unified Access Gateway 2010 Service Pack 1|
|Information Disclosure||Important||KB2522485 in MS11-079 replaced by KB2649261|
|Microsoft Forefront Unified Access Gateway 2010 Service Pack 1 Update 1|
This update is available from the Microsoft Download Center only. Please see the next section, Frequently Asked Questions (FAQ) Related to This Security Update.
|Microsoft Forefront Unified Access Gateway 2010|
|Microsoft Forefront Unified Access Gateway 2010 Update 1|
|Microsoft Forefront Unified Access Gateway 2010 Update 2|
Microsoft thanks the following for working with us to help protect customers:
How to obtain help and support for this security update
- Help installing updates: Support for Microsoft Update
- Security solutions for IT professionals: TechNet Security Troubleshooting and Support
- Help protect your computer that is running Windows from viruses and malware: Virus Solution and Security Center
- Local support according to your country: International Support
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- V1.0 (April 10, 2012): Bulletin published
- V1.1 (April 18, 2012): Corrected the bulletin replacement information for Microsoft Forefront Unified Access Gateway 2010 Service Pack 1. This is a bulletin change only. There were no changes to the detection or security update files.