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AUSCERT External Security Bulletin Redistribution
ESB-2009.1609
Important Vulnerabilities in Active Directory Federation
Services Could Allow Remote Code Execution
9 December 2009
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AusCERT Security Bulletin Summary
---------------------------------
Product: Active Directory Federation Services (ADFS)
Publisher: Microsoft
Operating System: Windows Server 2003
Windows Server 2008
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Unauthorised Access -- Console/Physical
Resolution: Patch/Upgrade
CVE Names: CVE-2009-2509 CVE-2009-2508
Original Bulletin:
http://www.microsoft.com/technet/security/Bulletin/MS09-070.mspx
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Microsoft Security Bulletin MS09-070
Important Vulnerabilities in Active Directory Federation Services Could Allow
Remote Code Execution (971726)
Published: December 08, 2009
Version: 1.0
General Information
Executive Summary
This security update resolves two privately reported vulnerabilities in
Microsoft Windows. The more severe of these vulnerabilities could allow
remote code execution if an attacker sent a specially crafted HTTP request to
an ADFS-enabled Web server. An attacker would need to be an authenticated
user in order to exploit either of these vulnerabilities.
This security update is rated Important for affected releases of Windows
Server 2003, Windows Server 2003 x64 Edition, Windows Server 2008, and
Windows Server 2008 x64 Edition. For more information, see the subsection,
Affected and Non-Affected Software, in this section.
The security update addresses the vulnerabilities by correcting the
validation that ADFS-enabled Web servers apply to request headers submitted
by a Web client. For more information about the vulnerabilities, see the
Frequently Asked Questions (FAQ) subsection for the specific vulnerability
entry under the next section, Vulnerability Information.
Affected Software
Windows Server 2003 Service Pack 2
Windows Server 2003 x64 Edition Service Pack 2
Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit
Systems Service Pack 2
Windows Server 2008 for x64-based Systems and Windows Server 2008 for
x64-based Systems Service Pack 2
Vulnerability Information
Single Sign On Spoofing in ADFS Vulnerability - CVE-2009-2508
A spoofing vulnerability in Active Directory Federation Services could
allow an attacker to impersonate an authenticated user if the attacker
has access to a workstation and Web browser recently used by the targeted
user to access a Web site that offers single sign on.
Remote Code Execution in ADFS Vulnerability - CVE-2009-2509
A remote code execution vulnerability exists in implementations of Active
Directory Federation Services (ADFS). The vulnerability is due to incorrect
validation of request headers when an authenticated user connects to an ADFS
enabled Web server. An attacker who successfully exploited this vulnerability
could take complete control of an affected system.
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The University of Queensland
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