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                         AUSCERT Security Bulletin

                              ASB-2017.0196.2
    Microsoft Security Updates for Office, Office Services and Web Apps
                             29 November 2017

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:              Microsoft Office
                      Microsoft Office Services
                      Microsoft Office Web Apps
                      WordPad
Operating System:     Windows
                      Mac OS
Impact/Access:        Execute Arbitrary Code/Commands -- Remote with User Interaction
                      Cross-site Request Forgery      -- Remote with User Interaction
                      Reduced Security                -- Remote with User Interaction
Resolution:           Patch/Upgrade
CVE Names:            CVE-2017-11884 CVE-2017-11882 CVE-2017-11878
                      CVE-2017-11877 CVE-2017-11876 CVE-2017-11854
Member content until: Friday, December 15 2017
Reference:            https://portal.msrc.microsoft.com/en-us/security-guidance

Revision History:     November 29 2017: Updates available see mitigation for details.
                      November 15 2017: Initial Release

OVERVIEW

        Microsoft has released its monthly security patch update for the month
        of November 2017. [1]
        
        This update resolves 7 vulnerabilities across the following products: 
        
         Microsoft Excel  2016 Click-to-Run (C2R) for 32-bit editions
         Microsoft Excel  2016 Click-to-Run (C2R) for 64-bit editions
         Microsoft Excel 2007 Service Pack 3
         Microsoft Excel 2010 Service Pack 2 (32-bit editions)
         Microsoft Excel 2010 Service Pack 2 (64-bit editions)
         Microsoft Excel 2013 RT Service Pack 1
         Microsoft Excel 2013 Service Pack 1 (32-bit editions)
         Microsoft Excel 2013 Service Pack 1 (64-bit editions)
         Microsoft Excel 2016 (32-bit edition)
         Microsoft Excel 2016 (64-bit edition)
         Microsoft Excel 2016 for Mac
         Microsoft Excel Viewer 2007 Service Pack 3
         Microsoft Office 2007 Service Pack 3
         Microsoft Office 2010 Service Pack 2 (32-bit editions)
         Microsoft Office 2010 Service Pack 2 (64-bit editions)
         Microsoft Office 2013 Service Pack 1 (32-bit editions)
         Microsoft Office 2013 Service Pack 1 (64-bit editions)
         Microsoft Office 2016 (32-bit edition)
         Microsoft Office 2016 (64-bit edition)
         Microsoft Office Compatibility Pack Service Pack 3
         Microsoft Office Web Apps 2010 Service Pack 2
         Microsoft Office Web Apps Server 2013 Service Pack 1
         Microsoft Office Word Viewer
         Microsoft Project Server 2013 Service Pack 1
         Microsoft SharePoint Enterprise Server 2016
         Microsoft Word 2007 Service Pack 3
         Microsoft Word 2010 Service Pack 2 (32-bit editions)
         Microsoft Word 2010 Service Pack 2 (64-bit editions)
         Microsoft Word 2013 RT Service Pack 1
         Microsoft Word 2013 Service Pack 1 (32-bit editions)
         Microsoft Word 2013 Service Pack 1 (64-bit editions)
         Microsoft Word 2016 (32-bit edition)
         Microsoft Word 2016 (64-bit edition)
         Microsoft Word 2016 for Mac
         Word Automation Services


IMPACT

        Microsoft has given the following details regarding these vulnerabilities.
        
         Details         Impact                   Severity
         ADV170020       Defense in Depth         None
         CVE-2017-11854  Remote Code Execution    Important
         CVE-2017-11876  Elevation of Privilege   Moderate
         CVE-2017-11877  Security Feature Bypass  Important
         CVE-2017-11878  Remote Code Execution    Important
         CVE-2017-11882  Remote Code Execution    Important
         CVE-2017-11884  Remote Code Execution    Important


MITIGATION

        "To comprehensively address CVE-2017-11882 Microsoft is releasing 
        security updates 4011604 for affected editions of Microsoft Office 
        2007 and 4011618 for affected editions of Microsoft Office 2010." [1]
        
        "Revised the Affected Products table to include
        Microsoft Office Online Server 2016 because the update also provides
        enhanced security as a defense-in-depth measure. Microsoft 
        recommends that customers running Office Online Server 2016 install 
        update 4011020 for these enhanced security measures." [1]
        
        Microsoft recommends updating the software with the version made 
        available on the Microsoft Update Cataloge for the following 
        Knowledge Base articles. [1]
        
         KB2553204, KB3162047, KB4011242, KB4011247, KB4011268 KB4011245, 
        KB4011244, KB4011265, KB4011264, KB4011267 KB4011266, KB4011262, 
        KB4011206, KB4011205, KB4011220 KB4011233, KB4011250, KB4011199, 
        KB4011257, KB4011270 KB4011271, KB4011276, KB4011197


REFERENCES

        [1] Security Guidance
            https://portal.msrc.microsoft.com/en-us/security-guidance

AusCERT has made every effort to ensure that the information contained
in this document is accurate.  However, the decision to use the information
described is the responsibility of each user or organisation. 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.

===========================================================================
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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