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                         AUSCERT Security Bulletin

                               ASB-2019.0345
               Security update for Microsoft developer tools
                             11 December 2019

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

Product:              Microsoft developer tools
Operating System:     Windows
                      Android
Impact/Access:        Execute Arbitrary Code/Commands -- Remote with User Interaction
                      Create Arbitrary Files          -- Remote with User Interaction
                      Provide Misleading Information  -- Remote with User Interaction
                      Access Confidential Data        -- Unknown/Unspecified         
Resolution:           Patch/Upgrade
CVE Names:            CVE-2019-1487 CVE-2019-1486 CVE-2019-1387
                      CVE-2019-1354 CVE-2019-1352 CVE-2019-1351
                      CVE-2019-1350 CVE-2019-1349 
Member content until: Friday, January 10 2020

OVERVIEW

        Microsoft has released its monthly security patch update for the month of December 2019.
        
        This update resolves 8 vulnerabilities across the following products: [1]
        
         Microsoft Authentication Library (MSAL) for Android
         Microsoft Visual Studio 2017 version 15.0
         Microsoft Visual Studio 2017 version 15.9 (includes 15.1 - 15.8)
         Microsoft Visual Studio 2017 version 16.0
         Microsoft Visual Studio 2019 version 16.0
         Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)
         Microsoft Visual Studio Live Share extension


IMPACT

        Microsoft has given the following details regarding these vulnerabilities.
        
         Details         Impact                   Severity
         CVE-2019-1349   Remote Code Execution    Critical
         CVE-2019-1350   Remote Code Execution    Critical
         CVE-2019-1351   Tampering                Moderate
         CVE-2019-1352   Remote Code Execution    Critical
         CVE-2019-1354   Remote Code Execution    Critical
         CVE-2019-1387   Remote Code Execution    Critical
         CVE-2019-1486   Spoofing                 Important
         CVE-2019-1487   Information Disclosure   Important


MITIGATION

        Microsoft recommends updating the software with the version made available on the Microsoft Update Catalogue. [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.

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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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