-----BEGIN PGP SIGNED MESSAGE-----
AUSCERT External Security Bulletin Redistribution
Important Vulnerabilities in Active Directory Federation
Services Could Allow Remote Code Execution
9 December 2009
AusCERT Security Bulletin Summary
Product: Active Directory Federation Services (ADFS)
Operating System: Windows Server 2003
Windows Server 2008
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Unauthorised Access -- Console/Physical
CVE Names: CVE-2009-2509 CVE-2009-2508
- --------------------------BEGIN INCLUDED TEXT--------------------
Microsoft Security Bulletin MS09-070
Important Vulnerabilities in Active Directory Federation Services Could Allow
Remote Code Execution (971726)
Published: December 08, 2009
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.
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
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.
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to firstname.lastname@example.org
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
If you believe that your computer system has been compromised or attacked in
any way, we encourage you to let us know by completing the secure National IT
Incident Reporting Form at:
Australian Computer Emergency Response Team
The University of Queensland
Internet Email: email@example.com
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
-----BEGIN PGP SIGNATURE-----
-----END PGP SIGNATURE-----