Operating System:

[Win]

Published:

15 September 2021

Protect yourself against future threats.

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                         AUSCERT Security Bulletin

                               ASB-2021.0184
       Microsoft Patch Tuesday update for Microsoft Developer Tools
                            for September 2021
                             15 September 2021

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

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

Product:          Visual Studio
                  Visual Studio Code
Operating System: Windows
Impact/Access:    Execute Arbitrary Code/Commands -- Existing Account
                  Increased Privileges            -- Existing Account
                  Provide Misleading Information  -- Existing Account
Resolution:       Patch/Upgrade
CVE Names:        CVE-2021-36952 CVE-2021-26437 CVE-2021-26434

OVERVIEW

        Microsoft has released its monthly security patch update for the
        month of September 2021.
        
        This update resolves 3 vulnerabilities across the following
        product(s): [1]
        
         Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8)
         Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10)
         Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)
         Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)
         Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)
         Visual Studio Code


IMPACT

        Microsoft has given the following details regarding these vulnerabilities.
        
         Details         Impact                   Severity
         CVE-2021-26434  Elevation of Privilege   Important
         CVE-2021-26437  Spoofing                 Important
         CVE-2021-36952  Remote Code Execution    Important


MITIGATION

        Microsoft recommends updating the software to the latest available
        version available on the Microsoft Update Catalog. [1].


REFERENCES

        [1] [1] Microsoft Security Update Guidance
            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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