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                         AUSCERT Security Bulletin

                               ASB-2018.0212
              Security updates for Microsoft Office products
                             12 September 2018

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

Product:              Microsoft Excel
                      Microsoft Excel Viewer
                      Microsoft Office 2016 Click-to-Run
                      Microsoft Office 2016 for Mac
                      Microsoft Office Compatibility Pack
                      Microsoft SharePoint Enterprise Server
                      Microsoft SharePoint Server
                      Microsoft Word
Operating System:     Windows
                      Mac OS
Impact/Access:        Administrator Compromise        -- Remote with User Interaction
                      Execute Arbitrary Code/Commands -- Remote with User Interaction
                      Increased Privileges            -- Existing Account            
                      Cross-site Scripting            -- Remote with User Interaction
                      Access Confidential Data        -- Remote with User Interaction
Resolution:           Patch/Upgrade
CVE Names:            CVE-2018-8431 CVE-2018-8430 CVE-2018-8429
                      CVE-2018-8428 CVE-2018-8426 CVE-2018-8332
                      CVE-2018-8331  
Member content until: Friday, October 12 2018

OVERVIEW

        Microsoft has released its monthly security patch update for the month of
        September 2018. [1]  This update resolves 7 vulnerabilities across the
        following products:
        
         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 Viewer 2007 Service Pack 3
         Microsoft Office 2016 Click-to-Run (C2R) for 32-bit editions
         Microsoft Office 2016 Click-to-Run (C2R) for 64-bit editions
         Microsoft Office 2016 for Mac
         Microsoft Office Compatibility Pack Service Pack 3
         Microsoft SharePoint Enterprise Server 2013 Service Pack 1
         Microsoft SharePoint Enterprise Server 2016
         Microsoft SharePoint Server 2010 Service Pack 2
         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)


IMPACT

        Microsoft has given the following details regarding these vulnerabilities.
        
         Details         Impact                   Severity
         CVE-2018-8331   Remote Code Execution    Important
         CVE-2018-8332   Remote Code Execution    Critical
         CVE-2018-8426   Information Disclosure   Important
         CVE-2018-8428   Elevation of Privilege   Important
         CVE-2018-8429   Information Disclosure   Important
         CVE-2018-8430   Remote Code Execution    Important
         CVE-2018-8431   Information Disclosure   Important


MITIGATION

        Microsoft recommends updating the software with the version made available on
        the Microsoft Update Catalogue for the following Knowledge Base articles. [1]
        
         KB4032246, KB4092460, KB4092466, KB4092470, KB4227175
         KB4092479, KB4092459, KB4022207, KB4092447, KB4092467


REFERENCES

        [1] Security Update Guide
            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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