Today, we are releasing the August 2018 Security and Quality Rollup.  This release also addressed the July issues explained in KB 4345913 and Advisory on July 2018 .NET Framework Updates.

Security

CVE-2018-8360 – Windows Information Disclosure Vulnerability

This update resolves an information disclosure vulnerability in Microsoft .NET Framework that could allow an attacker to access information in multi-tenant environments. The vulnerability is caused when .NET Framework is used in high-load/high-density network connections in which content from one stream can blend into another stream.

To exploit the vulnerability, an attacker who can access one tenant in a high-load/high-density environment could potentially trigger multi-tenanted data exposure from one customer to another.

This security update addresses the vulnerability by correcting the way that .NET Framework handles high-load/high-density network connections.

CVE-2018-8360

Quality and Reliability

This release contains the following quality and reliability improvements.

CLR

• Applications that rely on COM components were failing to load or run correctly because of “access denied”, “class not registered”, or “internal failure occurred for unknown reasons” errors described in KB 4345913 and Advisory on July 2018 .NET Framework Updates.  [651528]

Note: Additional information on these improvements is not available. The VSTS bug number provided with each improvement is a unique ID that you can give Microsoft Customer Support, include in StackOverflow comments or use in web searches.

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+.

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

Docker Images

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

• microsoft/aspnet
• microsoft/dotnet-framework
• microsoft/dotnet-framework-samples

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:

• July 2018 Update
• June 2018 Security and Quality Rollup
• May 2018 Security and Quality Rollup
• February 2018 Security and Quality Rollup