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                         AUSCERT Security Bulletin

                              ASB-2019.0236.2
              Security update for Microsoft Development Tools
                              15 August 2019

===========================================================================

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

Product:              Microsoft Development Tools
Operating System:     Windows
Impact/Access:        Execute Arbitrary Code/Commands -- Remote with User Interaction
                      Increased Privileges            -- Existing Account            
                      Denial of Service               -- Remote with User Interaction
Resolution:           Patch/Upgrade
CVE Names:            CVE-2019-1211 CVE-2019-1197 CVE-2019-1196
                      CVE-2019-1195 CVE-2019-1141 CVE-2019-1140
                      CVE-2019-1139 CVE-2019-1131 
Member content until: Friday, September 13 2019
Reference:            ASB-2019.0232
                      ESB-2019.1950

Revision History:     August 15 2019: Vendor published CVE-2019-1258
                      August 14 2019: Initial Release

OVERVIEW

        Microsoft has released its monthly security patch update for the month of August 2019. [1]
        
        This update resolves 9 vulnerabilities across the following products: 
        
         ChakraCore
         Microsoft Visual Studio 2017
         Microsoft Visual Studio 2017 version 15.9
         Microsoft Visual Studio 2019 version 16.0
         Microsoft Visual Studio 2019 version 16.2
         ADAL.NET
         Nuget 5.2.0
        [1] [2]


IMPACT

        Microsoft has given the following details regarding these 
        vulnerabilities.
        
         Details         Impact                   Severity
         CVE-2019-1131   Remote Code Execution    Critical
         CVE-2019-1139   Remote Code Execution    Critical
         CVE-2019-1140   Remote Code Execution    Critical
         CVE-2019-1141   Remote Code Execution    Critical
         CVE-2019-1195   Remote Code Execution    Critical
         CVE-2019-1196   Remote Code Execution    Critical
         CVE-2019-1197   Remote Code Execution    Critical
         CVE-2019-1211   Elevation of Privilege   Important
         CVE-2019-1258   Elevation of Privilege   Important
        [1] [2]


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

        [2] CVE-2019-1258
            https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2019-1258

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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