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                         AUSCERT Security Bulletin

                              ASB-2018.0282.2
       Microsoft Exchange Server gets November 2018 security update
                             15 November 2018

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

Product:              Exchange Server 2010
                      Exchange Server 2013
                      Exchange Server 2016
                      Exchange Server 2019
Operating System:     Windows
Impact/Access:        Increased Privileges -- Remote with User Interaction
Resolution:           Mitigation
CVE Names:            CVE-2018-8581  
Member content until: Friday, December 14 2018

Revision History:     November 15 2018: Correction to note that the fix is
                                        manual for now and will later be provided
                                        in a software update.
                      November 14 2018: Initial Release

OVERVIEW

        Microsoft has released its monthly security patch update for the month of November 2018.
        
        This update resolves 1 vulnerability across the following products: [1]
        
         Microsoft Exchange Server 2010
         Microsoft Exchange Server 2013
         Microsoft Exchange Server 2016
         Microsoft Exchange Server 2019


IMPACT

        Microsoft has given the following details regarding these vulnerabilities.
        
         Details         Impact                   Severity
         CVE-2018-8581   Elevation of Privilege   Important
        [1]


MITIGATION

        Microsoft recommends deleting a certain registry key to disable
        a feature. A future update will make this a permanent change. [1]


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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