C# .NET Framework September 2018 Security and Quality Rollup

  • Thread starter Tara Overfield [MSFT]
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Tara Overfield [MSFT]

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Today, we are releasing the September 2018 Security and Quality Rollup.

Security

CVE-2018-8421 – Windows Remote Code Execution Vulnerability


This security update resolves a vulnerability in Microsoft .NET Framework that could allow remote code execution when .NET Framework processes untrusted input. An attacker who successfully exploits this vulnerability in software by using .NET Framework could take control of an affected system. The attacker could then install programs; view, change, or delete data; or create new accounts that have full user rights. Users whose accounts are configured to have fewer user rights on the system could be less affected than users who operate with administrative user rights.


To exploit the vulnerability, an attacker would first have to convince the user to open a malicious document or application.

This security update addresses the vulnerability by correcting how .NET Framework validates untrusted input.


CVE-2018-8421

Getting the Update


The Security and Quality Rollup is available via Windows Update, Windows Server Update Services, Microsoft Update Catalog, and Docker.

Microsoft Update Catalog


You can get the update via the Microsoft Update Catalog. For Windows 10, .NET Framework updates are part of the Windows 10 Monthly Rollup.

The following table is for Windows 10 and Windows Server 2016+.

Product Version Security and Quality Rollup KB
Windows 10 1803 (April 2018 Update) Catalog
4457128

.NET Framework 3.5 4457128
.NET Framework 4.7.2 4457128
Windows 10 1709 (Fall Creators Update) Catalog
4457142

.NET Framework 3.5 4457142
.NET Framework 4.7.1, 4.7.2 4457142
Windows 10 1703 (Creators Update) Catalog
4457138

.NET Framework 3.5 4457138
.NET Framework 4.7, 4.7.1, 4.7.2 4457138
Windows 10 1607 (Anniversary Update)
Windows Server 2016
Catalog
4457131

.NET Framework 3.5 4457131
.NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2 4457131
Windows 10 1507 Catalog
4457132

.NET Framework 3.5 4457132
.NET Framework 4.6, 4.6.1, 4.6.2 4457132

The following table is for earlier Windows and Windows Server versions.

Product Version Security and Quality Rollup KB Security Only Update KB
Windows 8.1
Windows RT 8.1
Windows Server 2012 R2
Catalog
4457920
Catalog
4457916

.NET Framework 3.5 4457045 4457056
.NET Framework 4.5.2 4457036 4457028
.NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 4457034 4457026
Windows Server 2012 Catalog
4457919
Catalog
4457915

.NET Framework 3.5 4457042 4457053
.NET Framework 4.5.2 4457037 4457029
.NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 4457033 4457025
Windows 7
Windows Server 2008 R2
Catalog
4457918
Catalog
4457914

.NET Framework 3.5.1 4457044 4457055
.NET Framework 4.5.2 4457038 4457030
.NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 4457035 4457027
Windows Server 2008 Catalog
4457921
Catalog
4457917

.NET Framework 2.0, 3.0 4457043 4457054
.NET Framework 4.5.2 4457038 4457030
.NET Framework 4.6 4457035 4457027
Docker Images


We are updating the following .NET Framework Docker images for today’s release:


Note: Look at the “Tags” view in each repository to see the updated Docker image tags.

Previous Monthly Rollups


The last few .NET Framework Monthly updates are listed below for your convenience:


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