ASB-2018.0298 - [Win] Microsoft Exchange Server: Unauthorised access - Existing account 2018-12-12

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                         AUSCERT Security Bulletin

                               ASB-2018.0298
            Microsoft Exchange Server updates for December 2018
                             12 December 2018

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

Product:              Microsoft Exchange Server
Operating System:     Windows
Impact/Access:        Unauthorised Access -- Existing Account
Resolution:           Patch/Upgrade
CVE Names:            CVE-2018-8604  
Member content until: Friday, January 11 2019
Reference:            ASB-2018.0282.2

OVERVIEW

        Microsoft has released its monthly security patch update for the month of December 2018.
        
        This update resolves 1 vulnerability across the following products: [1]
        
         Microsoft Exchange Server 2016 Cumulative Update 10
         Microsoft Exchange Server 2016 Cumulative Update 11


IMPACT

        Microsoft has given the following details regarding this vulnerability.
        
         Details         Impact                   Severity
         CVE-2018-8604  Tampering                Important


MITIGATION

        Microsoft recommends updating the software with the version made available on the Microsoft Update Catalogue for the following Knowledge Base articles. [1].
        
        
         KB4468741


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.

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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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