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AUSCERT Security Bulletin
ASB-2021.0185
Microsoft Patch Tuesday update for Microsoft Extended
Security Update (ESU) products for September 2021
15 September 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: Windows 7
Windows Server 2008
Windows Server 2008 R2
Operating System: Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Increased Privileges -- Existing Account
Denial of Service -- Existing Account
Access Confidential Data -- Remote/Unauthenticated
Provide Misleading Information -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-40447 CVE-2021-40444 CVE-2021-38671
CVE-2021-38667 CVE-2021-38639 CVE-2021-38638
CVE-2021-38636 CVE-2021-38635 CVE-2021-38633
CVE-2021-38630 CVE-2021-38629 CVE-2021-38628
CVE-2021-38626 CVE-2021-38625 CVE-2021-36969
CVE-2021-36968 CVE-2021-36965 CVE-2021-36964
CVE-2021-36963 CVE-2021-36962 CVE-2021-36961
CVE-2021-36960 CVE-2021-36959 CVE-2021-36955
CVE-2021-26435
OVERVIEW
Microsoft has released its monthly security patch update for the
month of September 2021.
This update resolves 25 vulnerabilities across the following
product(s): [1]
Windows 7 for 32-bit Systems Service Pack 1
Windows 7 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
IMPACT
Microsoft has given the following details regarding these vulnerabilities.
Details Impact Severity
CVE-2021-26435 Remote Code Execution Critical
CVE-2021-36955 Elevation of Privilege Important
CVE-2021-36959 Spoofing Important
CVE-2021-36960 Information Disclosure Important
CVE-2021-36961 Denial of Service Important
CVE-2021-36962 Information Disclosure Important
CVE-2021-36963 Elevation of Privilege Important
CVE-2021-36964 Elevation of Privilege Important
CVE-2021-36965 Remote Code Execution Critical
CVE-2021-36968 Elevation of Privilege Important
CVE-2021-36969 Information Disclosure Important
CVE-2021-38625 Elevation of Privilege Important
CVE-2021-38626 Elevation of Privilege Important
CVE-2021-38628 Elevation of Privilege Important
CVE-2021-38629 Information Disclosure Important
CVE-2021-38630 Elevation of Privilege Important
CVE-2021-38633 Elevation of Privilege Important
CVE-2021-38635 Information Disclosure Important
CVE-2021-38636 Information Disclosure Important
CVE-2021-38638 Elevation of Privilege Important
CVE-2021-38639 Elevation of Privilege Important
CVE-2021-38667 Elevation of Privilege Important
CVE-2021-38671 Elevation of Privilege Important
CVE-2021-40444 Remote Code Execution Important
CVE-2021-40447 Elevation of Privilege Important
MITIGATION
Microsoft recommends updating the software with the version made
available on the Microsoft Update Catalogue for the following
Knowledge Base articles. [1].
KB5005563, KB5005606, KB5005615, KB5005618, KB5005633
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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