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AUSCERT Security Bulletin
ASB-2021.0192
Microsoft Patch Tuesday update for Microsoft Developer Tools
for October 2021
13 October 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: .NET 5.0
Microsoft Visual Studio 2017
Microsoft Visual Studio 2019
Operating System: Windows
Impact/Access: Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-41355 CVE-2021-3450 CVE-2021-3449
CVE-2020-1971
Reference: ASB-2021.0145
ASB-2021.0139
ASB-2021.0135
ASB-2021.0134
ESB-2021.2259.2
ESB-2021.1075
OVERVIEW
Microsoft has released its monthly security patch update for the
month of October 2021.
This update resolves 4 vulnerabilities across the following products:
[1]
.NET 5.0
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)
IMPACT
Microsoft has given the following details regarding these vulnerabilities.
Details Impact Severity
CVE-2020-1971 Denial of Service Important
CVE-2021-3449 Denial of Service Important
CVE-2021-3450 Information Disclosure Important
CVE-2021-41355 Information Disclosure Important
MITIGATION
Microsoft recommends updating the software to the latest available
version available on the Microsoft Update Catalog. [1].
REFERENCES
[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.
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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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