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Liebe Kolleginnen und Kollegen,

soeben erreichte uns nachfolgende Warnung des Microsoft Product Security
Notification Service. Wir geben diese Informationen unveraendert an Sie
weiter.

CVE-2009-0568 – Schwachstelle im Microsoft RPC Code

Ueber Windows Remote Procedure Calls (RPC) kann eine Funktion eines
Servers ueber das Netzwerk oder auf dem lokalen Computer aufgerufen
werden. Die plattformabhaengige Repraesentation und Konvertierung der
Daten wird durch die Network Data Representation (NDR) gewaehrleistet.
Im Windows RPC Code fuer die Datenkonvertierung (RPC Marshalling
Engine) existiert ein Fehler bei der Verarbeitung eines Pointers. Ein
Angreifer kann diese Schwachstelle mittels eines speziell
konstruierten RPC-Aufrufs ausnutzen, um beliebige Befehle mit den
Rechten des entsprechenden Servers oder Benutzers auszufuehren. Die
Schwachstelle laesst sich lokal zur Privilegienerweiterung ausnutzen
oder auch ueber das Netzwerk, wenn der Angreifer Zugriff auf eine
verwundbare RPC-Funktion hat. Allerdings sind nur bestimmte
RPC-Funktionen betroffen, die die entsprechenden verwundbaren
NDR-Routinen nutzen.

Betroffen sind die folgenden Software Pakete und Plattformen:

Microsoft Windows 2000
Windows XP Service Pack 2 und 3
Windows Server 2003 (x86, x64 und Itanium)
Windows Server 2008 (x86, x64 und Itanium)
Windows Vista (x86 und x64)

Vom Hersteller werden ueberarbeitete Pakete zur Verfuegung gestellt.

Hersteller Advisory:
http://www.microsoft.com/technet/security/bulletin/ms09-026.mspx

(c) der deutschen Zusammenfassung bei DFN-CERT Services GmbH; die
Verbreitung, auch auszugsweise, ist nur unter Hinweis auf den Urheber,
DFN-CERT Services GmbH, und nur zu nicht kommerziellen Zwecken
gestattet.

Mit freundlichen Gruessen,
Jan Kohlrausch (CSIRT), Phone +49 40 808077-555

DFN-CERT Services GmbH, https://www.dfn-cert.de, Phone +49 40 808077-555
Sitz / Register: Hamburg, AG Hamburg, HRB 88805, Ust-IdNr.: DE 232129737
Sachsenstrasse 5, 20097 Hamburg/Germany, CEO: Dr. Klaus-Peter Kossakowski

CarmentiS – Early Warning Expertise
https://www.carmentis.org

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===========================================================================
AUSCERT External Security Bulletin Redistribution

ESB-2009.0699 — [Win]
Windows Remote Procedure Call: Increased Privileges
10 June 2009

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AusCERT Security Bulletin Summary
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Product: Remote Procedure Call (RPC)
Publisher: Microsoft
Operating System: Windows
Impact: Increased Privileges
Execute Arbitrary Code/Commands
Access: Remote/Unauthenticated
CVE Names: CVE-2009-0568

Original Bulletin:
http://www.microsoft.com/technet/security/Bulletin/MS09-026.mspx

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Microsoft Security Bulletin MS09-026 – Important

Vulnerability in RPC Could Allow Elevation of Privilege (970238)

Published: June 9, 2009

Version: 1.0

General Information

Executive Summary

This security update resolves a publicly disclosed vulnerability in the
Windows remote procedure call (RPC) facility where the RPC Marshalling
Engine does not update its internal state appropriately. The
vulnerability could allow an attacker to execute arbitrary code and take
complete control of an affected system. Supported editions of Microsoft
Windows are not delivered with any RPC servers or clients that are
subject to exploitation of this vulnerability. In a default
configuration, users could not be attacked by exploitation of this
vulnerability. However, the vulnerability is present in the Microsoft
Windows RPC runtime and could affect third-party RPC applications.

This security update is rated Important for all supported editions of
Microsoft Windows 2000, Windows XP, Windows Server 2003, Windows Vista,
and Windows Server 2008. For more information, see the subsection,
Affected and Non-Affected Software, in this section.

The update addresses the vulnerability by correcting the way that the
RPC Marshalling Engine updates its internal state.

Affected Software

Microsoft Windows 2000 Service Pack 4
Windows XP Service Pack 2 and
Windows XP Service Pack 3
Windows XP Professional x64 Edition Service Pack 2
Windows Server 2003 Service Pack 2
Windows Server 2003 x64 Edition Service Pack 2
Windows Server 2003 with SP2 for Itanium-based Systems
Windows Vista,
Windows Vista Service Pack 1, and
Windows Vista Service Pack 2
Windows Vista x64 Edition,
Windows Vista x64 Edition Service Pack 1, and
Windows Vista 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 Server Core installation affected)
Windows Server 2008 for x64-based Systems and
Windows Server 2008 for x64-based Systems Service Pack 2
(Windows Server 2008 Server Core installation affected)
Windows Server 2008 for Itanium-based Systems and
Windows Server 2008 for Itanium-based Systems Service Pack 2

Vulnerability Information

RPC Marshalling Engine Vulnerability – CVE-2009-0568

An elevation of privilege vulnerability exists in the Windows remote
procedure call (RPC) facility where the RPM Marshalling Engine does not
update its internal state appropriately. The failure to update internal
state could lead to a pointer being read from an incorrect location. An
attacker who successfully exploited this vulnerability could execute
arbitrary code and take complete control of an affected system. An
attacker could then install programs; view, change, or delete data; or
create new accounts with full user rights.

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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 auscert@auscert.org.au
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:

http://www.auscert.org.au/render.html?cid=1980

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:

http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
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.
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