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Bulletins   Conferences   News & Media   Services   Web Log   Site Map   Site Help   Member login Login »  Become a member »   Home » Security Bul... » Security Bul... » AusCERT Alert » AL-2008.0123 -- [Win][Mac][OSX] -- MS08-074 - Critic...   AL-2008.0123 -- [Win][Mac][OSX] -- MS08-074 - Critical - Vulnerabilities in Microsoft Office Excel Could Allow Remote Code Execution Date: 28 January 2009 References: ESB-2008.1150  AU-2009.0008   Click here for printable version -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== A U S C E R T A L E R T AL-2008.0123 -- AUSCERT ALERT [Win][Mac][OSX] MS08-074 - Critical - Vulnerabilities in Microsoft Office Excel Could Allow Remote Code Execution 29 January 2009 =========================================================================== AusCERT Alert Summary --------------------- Product: Microsoft Office 2000 Service Pack 3 Microsoft Office Excel 2000 Service Pack 3 Microsoft Office XP Service Pack 3 Microsoft Office Excel 2002 Service Pack 3 Microsoft Office 2003 Service Pack 3 Microsoft Office Excel 2003 Service Pack 3 2007 Microsoft Office System Microsoft Office Excel 2007 2007 Microsoft Office System Service Pack 1 Microsoft Office Excel 2007 Service Pack 1 Microsoft Office Excel Viewer 2003 Microsoft Office Excel Viewer 2003 Service Pack 3 Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats Service Pack 1 Microsoft Office for Mac Microsoft Office 2004 for Mac Microsoft Office 2008 for Mac Open XML File Format Converter for Mac Publisher: Microsoft Operating System: Windows Mac OS X Impact: Execute Arbitrary Code/Commands Access: Remote/Unauthenticated CVE Names: CVE-2008-4265 CVE-2008-4264 CVE-2008-4266 Original Bulletin: http://www.microsoft.com/technet/security/bulletin/ms08-074.mspx Revision History: January 29 2009: Footnote added to Affected Software and Revision information added December 10 2008: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- Microsoft Security Bulletin MS08-074 - Critical Vulnerabilities in Microsoft Office Excel Could Allow Remote Code Execution (959070) Published: December 9, 2008 Version: 1.0 General Information Executive Summary This security update resolves three privately reported vulnerabilities in Microsoft Office Excel that could allow remote code execution if a user opens a specially crafted Excel file. An attacker who successfully exploited these vulnerabilities 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. This security update is rated Critical for all supported editions of Microsoft Office Excel 2000. For all supported editions of Microsoft Office Excel 2002, Microsoft Office Excel 2003, Microsoft Office Excel Viewer 2003, Microsoft Office Excel 2007, Microsoft Office Compatibility Pack, Microsoft Office Excel Viewer, Microsoft Office 2004 for Mac, Microsoft Office 2008 for Mac, and Open XML File Format Converter for Mac, this security update is rated Important. For more information, see the subsection, Affected and Non-Affected Software, in this section. This security update addresses these vulnerabilities by modifying the way that Microsoft Office Excel opens Excel files. For more information about the vulnerability, 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 immediately. Known Issues. Microsoft Knowledge Base Article 959070 documents the currently known issues that customers may experience when installing this security update. The article also documents recommended solutions for these issues. Affected Software Microsoft Office 2000 Service Pack 3 Microsoft Office Excel 2000 Service Pack 3 Microsoft Office XP Service Pack 3 Microsoft Office Excel 2002 Service Pack 3 Microsoft Office 2003 Service Pack 3 Microsoft Office Excel 2003 Service Pack 3 2007 Microsoft Office System Microsoft Office Excel 2007* 2007 Microsoft Office System Service Pack 1 Microsoft Office Excel 2007 Service Pack 1* Microsoft Office Excel Viewer 2003 Microsoft Office Excel Viewer 2003 Service Pack 3 Microsoft Office Excel Viewer Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats Service Pack 1 Microsoft Office for Mac Microsoft Office 2004 for Mac Microsoft Office 2008 for Mac Open XML File Format Converter for Mac * For Microsoft Office Excel 2007 and Microsoft Office Excel 2007 Service Pack 1, in addition to security update package KB958437, customers also need to install the security update for Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats (KB958439) to be protected from the vulnerabilities described in this bulletin. Customers who have already successfully installed both the KB958437 and KB958439 update packages do not need to reinstall. Vulnerability Information File Format Parsing Vulnerability - CVE-2008-4265 A remote code execution vulnerability exists in Microsoft Office Excel as a result of memory corruption when loading Excel records. The vulnerability could allow remote code execution if a user opens a specially crafted Excel file that includes a malformed object. 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. File Format Parsing Vulnerability - CVE-2008-4264 A remote code execution vulnerability exists in Microsoft Office Excel as a result of pointer corruption when loading Excel formulas. The vulnerability could allow remote code execution if a user opens a specially crafted Excel file that includes a malformed formula. 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. Excel Global Array Memory Corruption Vulnerability - CVE-2008-4266 A remote code execution vulnerability exists in Microsoft Office Excel as a result of stack corruption when loading Excel records. The vulnerability could allow remote code execution if a user opens a specially crafted Excel file that includes a malformed object. 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. Why was this bulletin revised on January 28, 2009? Microsoft revised this bulletin to communicate that for supported versions of Microsoft Office Excel 2007, in addition to security update package KB958437, customers also need to install the security update for Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats (KB958439) to be protected from the vulnerabilities described in this bulletin. Customers who have already successfully installed both the KB958437 and KB958439 security update packages do not need to reinstall. - --------------------------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 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. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBSYESqSh9+71yA2DNAQJmsgP/Zw+EzuYc/FC8k7on7UBSw5SF3UcGx9eH biHVX2s9gS6wh5jfdLhUt1ywSM+m7e9qgci0VGIA/2hXmaWxCWeDe2R1Y/sWnAwD QGL4loXhmfnxRqukUVAdNk9qxoiyWdMrxUplL3yew2f6xXzCRTHSb+BmbzvjsJqq RZbzZholkOo= =o70C -----END PGP SIGNATURE-----

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