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                         AUSCERT Security Bulletin

                               ASB-2019.0076
                   Microsoft Skype for Business and Lync
                               13 March 2019

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

Product:              Skype for Business Server 2015
                      Microsoft Lync Server 2013
Operating System:     Windows
Impact/Access:        Cross-site Scripting -- Remote with User Interaction
Resolution:           Patch/Upgrade
CVE Names:            CVE-2019-0798  
Member content until: Friday, April 12 2019

OVERVIEW

        Microsoft has released its monthly security patch update for the month 
        of March 2019.
        
        This update resolves 1 vulnerabilities across the following products: 
        [1]
        
         Microsoft Lync Server 2013 July 2018 Update
         Skype for Business Server 2015 March 2019 Update


IMPACT

        Microsoft has given the following details regarding these 
        vulnerabilities.
        
         Details         Impact                   Severity
         CVE-2019-0798   Spoofing                 Important


MITIGATION

        Microsoft recommends updating the software with the version made 
        available on the Microsoft Update Cataloge for the following Knowledge 
        Base articles. [1].
        
        
         KB2809243, KB3061064


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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