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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-2010-1901 – Schwachstelle bei der Verarbeitung von RTF-Dateien in
Microsoft Word
Microsoft Office enthaelt einen fehlerhaften Parser fuer Dateien im
*.RTF Dateiformat. Werden speziell praeparierte *.RTF Dateien mit
Microsoft Office geoeffnet, fuehrt dies zu einem Fehler in der
Speicherverwaltung infolgedessen Speicherinhalte ueberschrieben werden.
Ein Angreifer kann diese Schwachstelle ausnutzen, um beliebige Befehle
mit den Rechten des Anwenders auszufuehren, falls dieser eine
manipulierte Datei mit Microsoft Word oeffnet.
CVE-2010-1902 – Schwachstelle in Microsoft Word
Microsoft Office enthaelt einen fehlerhaften Parser fuer Dateien im
*.RTF Dateiformat. Werden speziell praeparierte *.RTF Dateien, welche
bestimmte sog. Drawing Object Control Words enthalten, mit Microsoft
Office geoeffnet, fuehrt dies zur fehlerhaften Berechnung einer
Buffergroesse, was einen Buffer Overflow auf dem Heap nach sich zieht.
Ein Angreifer kann diese Schwachstelle ausnutzen, um beliebige Befehle
mit den Rechten des Anwenders auszufuehren, falls dieser eine
manipulierte Datei mit Microsoft Word oeffnet.
CVE-2010-1900 – Schwachstelle in Microsoft Word
Microsoft Word enthaelt einen Fehler bei der Verarbeitung von
Office-Dokumenten. Bei der Verarbeitung einer entsprechend aufgebauten
Word-Datei (*.doc) kann durch entsprechend manipulierte record-Entries
ein Fehler in der Speicherverwaltung ausgeloest werden, welcher zum
Ueberschreiben von Speicherinhalten fuehrt.
Ein entfernter Angreifer kann diese Schwachstelle ausnutzen um
beliebige Befehle mit den Rechten des Anwenders zur Ausfuehrung
bringen, wenn es ihm gelingt diesen zum Zugriff auf eine manipulierte
Datei bzw. Webseite zu verleiten.
CVE-2010-1903 – Schwachstelle bei der Verarbeitung von HTML Linked
Objects in Microsoft Word
In Microsoft Word tritt ein Fehler bei der Verarbeitung von Word
Dokumenten auf. Werden Dokumente mit dem Programm geoeffnet, welche
fehlerhafte HTML Linked Objects enthalten, kann ein Fehler in der
Speicherverwaltung ausgeloest werden, welcher zum Ueberschreiben von
Speicherinhalten fuehrt.
Ein entfernter Angreifer kann diese Schwachstelle ausnutzen um
beliebige Befehle mit den Rechten des Anwenders zur Ausfuehrung
bringen, wenn es ihm gelingt diesen zum Zugriff auf eine manipulierte
Datei bzw. Webseite zu verleiten.
Betroffen sind die folgenden Software Pakete und Plattformen:
Microsoft Office XP Service Pack 3
Microsoft Office 2003 Service Pack 3
2007 Microsoft Office System Service Pack 2
Microsoft Office for Mac
Microsoft Office 2004 for Mac
Microsoft Office 2008 for Mac
Open XML File Format Converter for Mac
Microsoft Office Word Viewer
Microsoft Office Compatibility Pack fuer Word, Excel, und PowerPoint 2007
File Formats Service Pack 2
Microsoft Works 9
Alle Versionen von Microsoft Windows und MacOS X, fuer die eine
betroffene Version von Microsoft Word verfuegbar ist
Vom Hersteller werden ueberarbeitete Pakete zur Verfuegung gestellt.
(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,
Michael Groening, DFN-CERT
– —
Michael Groening (Incident Response Team)
DFN-CERT Services GmbH, https://www.dfn-cert.de, Phone +49 40 808077-590
Sitz / Register: Hamburg, AG Hamburg, HRB 88805, Ust-IdNr.: DE 232129737
Sachsenstrasse 5, 20097 Hamburg/Germany, CEO: Dr. Klaus-Peter Kossakowski
Automatische Warnmeldungen https://www.cert.dfn.de/autowarn
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AUSCERT External Security Bulletin Redistribution
ESB-2010.0711
Vulnerabilities in Microsoft Office Word Could Allow Remote Code Execution
11 August 2010
===========================================================================
AusCERT Security Bulletin Summary
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Product: Microsoft Office XP Service Pack 3
Microsoft Office 2003 Service Pack 3
2007 Microsoft Office System Service Pack 2
Microsoft Office for Mac
Microsoft Office 2004 for Mac
Microsoft Office 2008 for Mac
Open XML File Format Converter for Mac
Microsoft Office Word Viewer
Microsoft Office Compatibility Pack for Word, Excel, and
PowerPoint 2007 File Formats Service Pack 2
Microsoft Works 9
Publisher: Microsoft
Operating System: Windows
Mac OS X
Impact/Access: Execute Arbitrary Code/Commands — Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2010-1903 CVE-2010-1902 CVE-2010-1901
CVE-2010-1900
Original Bulletin:
http://www.microsoft.com/technet/security/Bulletin/MS10-056.mspx
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Microsoft Security Bulletin MS10-056 – Critical
Vulnerabilities in Microsoft Office Word Could Allow Remote Code Execution
(2269638)
Version: 1.0
General Information
Executive Summary
This security update resolves four privately reported vulnerabilities in
Microsoft Office. The most severe vulnerabilities could allow remote code
execution if a user opens or previews a specially crafted RTF e-mail
message. An attacker who successfully exploited any of these vulnerabilities
could gain the same user rights as the local user. Users whose accounts are
configured to have fewer user rights on the system could be less impacted
than users who operate with administrative user rights.
This security update is rated Critical for all supported editions of
Microsoft Office Word 2007. This security update is also rated Important for
all supported editions of Microsoft Office Word 2002, Microsoft Office Word
2003, Microsoft Office 2004 for Mac, and Microsoft Office 2008 for Mac; Open
XML File Format Converter for Mac; Works 9; and all supported versions of
Microsoft Office Word Viewer and Microsoft Office Compatibility Pack. For
more information, see the subsection, Affected and Non-Affected Software,
in this section.
The update addresses the vulnerabilities by modifying the way that Microsoft
Office Word opens specially crafted Word files and by modifying the way that
Word handles certain properties of rich text data. For more information about
the vulnerability, see the Frequently Asked Questions (FAQ) subsection for
the specific vulnerability entry under the next section, Vulnerability
Information.
Affected Software
Microsoft Office XP Service Pack 3
Microsoft Office 2003 Service Pack 3
2007 Microsoft Office System Service Pack 2
Microsoft Office for Mac
Microsoft Office 2004 for Mac
Microsoft Office 2008 for Mac
Open XML File Format Converter for Mac
Microsoft Office Word Viewer
Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007
File Formats Service Pack 2
Microsoft Works 9
Vulnerability Information
Word Record Parsing Vulnerability – CVE-2010-1900
A remote code execution vulnerability exists in the way that Microsoft
Office Word handles malformed records inside a specially crafted Word file.
An attacker who successfully exploited this vulnerability could 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. Users whose accounts are configured to have fewer user rights
on the system could be less impacted than users who operate with
administrative user rights.
Word RTF Parsing Engine Memory Corruption Vulnerability – CVE-2010-1901
A remote code execution vulnerability exists in the way that Microsoft
Office Word parses rich text data. An attacker who successfully exploited
this vulnerability could gain the same user rights as the local user. Users
whose accounts are configured to have fewer user rights on the system could
be less impacted than users who operate with administrative user rights.
Word RTF Parsing Buffer Overflow Vulnerability – CVE-2010-1902
A remote code execution vulnerability exists in the way that Microsoft
Office Word parses certain rich text data. An attacker who successfully
exploited this vulnerability could gain the same user rights as the local
user. Users whose accounts are configured to have fewer user rights on the
system could be less impacted than users who operate with administrative
user rights.
Word HTML Linked Objects Memory Corruption Vulnerability – CVE-2010-1903
A remote code execution vulnerability exists in the way that Microsoft
Office Word handles a specially crafted Word file that includes a
malformed record. An attacker who successfully exploited this
vulnerability could 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. Users whose accounts are
configured to have fewer user rights on the system could be less impacted
than users who operate with administrative user rights.
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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
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information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
http://www.auscert.org.au/render.html?cid=1980
===========================================================================
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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