ASB-2018.0103.2 - UPDATE [Win] Microsoft Exchange Server: Multiple vulnerabilities 2018-09-14

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                         AUSCERT Security Bulletin

                              ASB-2018.0103.2
              Security updates for Microsoft Exchange Server
                             14 September 2018

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

Product:          Microsoft Exchange Server
Operating System: Windows
Impact/Access:    Root Compromise                -- Remote/Unauthenticated      
                  Increased Privileges           -- Remote with User Interaction
                  Provide Misleading Information -- Remote with User Interaction
                  Access Confidential Data       -- Remote with User Interaction
Resolution:       Patch/Upgrade
CVE Names:        CVE-2018-8159 CVE-2018-8154 CVE-2018-8153
                  CVE-2018-8152 CVE-2018-8151 

Revision History: September 14 2018: Vendor update re CVE-2018-8154 and new comprehensive security update 4458321
                  May        9 2018: Initial Release

OVERVIEW

        Microsoft has released its monthly security patch update for the month of May
        2018. [1]  This update resolves 5 vulnerabilities across the following
        products:
         Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 21
         Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 24
         Microsoft Exchange Server 2013 Cumulative Update 19
         Microsoft Exchange Server 2013 Cumulative Update 20
         Microsoft Exchange Server 2013 Service Pack 1
         Microsoft Exchange Server 2016 Cumulative Update 8
         Microsoft Exchange Server 2016 Cumulative Update 9


IMPACT

        Microsoft has given the following details regarding these vulnerabilities.
        
         Details         Impact                   Severity
         CVE-2018-8151  Information Disclosure   Important
         CVE-2018-8152  Elevation of Privilege   Important
         CVE-2018-8153  Spoofing                 Low
         CVE-2018-8154  Remote Code Execution    Critical
         CVE-2018-8159  Elevation of Privilege   Important


MITIGATION

        Microsoft recommends updating the software with the version made available on
        the Microsoft Update Catalogue for the following Knowledge Base articles. [1]
        
        
         KB4091243, KB4092041
         
         KB4458321 [2]


REFERENCES

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

        [2] Update Rollup 24 for Exchange Server 2010 Service Pack 3
            https://support.microsoft.com/en-gb/help/4458321/update-rollup-24-for-exchange-server-2010-service-pack-3

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.

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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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