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                         AUSCERT Security Bulletin

                               ASB-2019.0158
          Microsoft Skype for Business and Lync Security Updates
                               12 June 2019

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

Product:              Microsoft Skype for Business and Lync
Operating System:     Windows
                      Linux variants
                      Android
Impact/Access:        Denial of Service        -- Remote/Unauthenticated
                      Access Confidential Data -- Remote/Unauthenticated
Resolution:           Patch/Upgrade
CVE Names:            CVE-2019-1029 CVE-2019-0932 
Member content until: Friday, July 12 2019
Reference:            ASB-2019.0144
                      ESB-2019.1148

OVERVIEW

        Microsoft has released its monthly security patch update for the month of June 2019.
        
        This update resolves 2 vulnerabilities across the following products: [1]
        
         Microsoft Lync Server 2010
         Microsoft Lync Server 2013
         Skype 8.35 when installed on Android Devices


IMPACT

        Microsoft has given the following details regarding these vulnerabilities.
        
         Details         Impact                   Severity
         CVE-2019-0932   Information Disclosure   Important
         CVE-2019-1029   Denial of Service        Important


MITIGATION

        Microsoft recommends updating the software with the version made available on the Microsoft Update Cataloge for the following Knowledge Base articles. [1].
        
        
         KB4506009


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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