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Red Hat Security Advisory

Synopsis: Important: .NET Core 3.1 on Red Hat Enterprise Linux 8 security update
Advisory ID: RHSA-2020:2450-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2450
Issue date: 2020-06-09
CVE Names: CVE-2020-1108
=====================================================================

1. Summary:

An update for .NET Core 3.1 is now available for Red Hat Enterprise Linux
8.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AppStream (v. 8) – x86_64

3. Description:

.NET Core is a managed-software framework. It implements a subset of the
.NET framework APIs and several new APIs, and it includes a CLR
implementation.

New versions of .NET Core that address a security vulnerability are now
available. The updated versions are .NET Core SDK 3.1.105 and .NET Core
Runtime 3.1.5.

Security Fixes:

* dotnet: Denial of service via untrusted input (CVE-2020-1108)

This is an additional update to comprehensively address CVE-2020-1108.

Default inclusions for applications built with .NET Core have been updated
to reference the newest versions and their security fixes.

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1827643 – CVE-2020-1108 dotnet: Denial of service via untrusted input

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
dotnet3.1-3.1.105-2.el8_2.src.rpm

x86_64:
aspnetcore-runtime-3.1-3.1.5-2.el8_2.x86_64.rpm
aspnetcore-targeting-pack-3.1-3.1.5-2.el8_2.x86_64.rpm
dotnet-3.1.105-2.el8_2.x86_64.rpm
dotnet-apphost-pack-3.1-3.1.5-2.el8_2.x86_64.rpm
dotnet-apphost-pack-3.1-debuginfo-3.1.5-2.el8_2.x86_64.rpm
dotnet-host-3.1.5-2.el8_2.x86_64.rpm
dotnet-host-debuginfo-3.1.5-2.el8_2.x86_64.rpm
dotnet-hostfxr-3.1-3.1.5-2.el8_2.x86_64.rpm
dotnet-hostfxr-3.1-debuginfo-3.1.5-2.el8_2.x86_64.rpm
dotnet-runtime-3.1-3.1.5-2.el8_2.x86_64.rpm
dotnet-runtime-3.1-debuginfo-3.1.5-2.el8_2.x86_64.rpm
dotnet-sdk-3.1-3.1.105-2.el8_2.x86_64.rpm
dotnet-sdk-3.1-debuginfo-3.1.105-2.el8_2.x86_64.rpm
dotnet-targeting-pack-3.1-3.1.5-2.el8_2.x86_64.rpm
dotnet-templates-3.1-3.1.105-2.el8_2.x86_64.rpm
dotnet3.1-debuginfo-3.1.105-2.el8_2.x86_64.rpm
dotnet3.1-debugsource-3.1.105-2.el8_2.x86_64.rpm
netstandard-targeting-pack-2.1-3.1.105-2.el8_2.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2020-1108
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2020 Red Hat, Inc.
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