ASB-2017.0212 - [Win] Microsoft Exchange Server: Provide misleading information - Remote with user interaction 2017-12-13

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                         AUSCERT Security Bulletin

                               ASB-2017.0212
              Security patches for Microsoft Exchange Server
                             13 December 2017

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

Product:              Microsoft Exchange Server 2013
                      Microsoft Exchange Server 2016
Operating System:     Windows
Impact/Access:        Provide Misleading Information -- Remote with User Interaction
Resolution:           Patch/Upgrade
CVE Names:            CVE-2017-11932  
Member content until: Friday, January 12 2018

OVERVIEW

        Microsoft has released its monthly security patch update for the
        month of December 2017. [1]
        
        This update resolves 2 vulnerabilities across the following products: 
        
         Microsoft Exchange Server 2013 Cumulative Update 17
         Microsoft Exchange Server 2013 Cumulative Update 18
         Microsoft Exchange Server 2016 Cumulative Update 6
         Microsoft Exchange Server 2016 Cumulative Update 7


IMPACT

        Microsoft has given the following details regarding these
        vulnerabilities.
        
         Details         Impact                   Severity
         ADV170023       Defense in Depth         None
         CVE-2017-11932  Spoofing                 Important


MITIGATION

        Microsoft recommends updating the software with the version made
        available on the Microsoft Update Catalogue for the following
        Knowledge Base articles. [1][2]
        
        
         KB4045655


REFERENCES

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

        [2] ADV170023 | Microsoft Exchange Defense in Depth Update
            https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/ADV170023

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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