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Red Hat Security Advisory

Synopsis: Critical: .NET Core security update
Advisory ID: RHSA-2020:2989-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2989
Issue date: 2020-07-17
CVE Names: CVE-2020-1147
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1. Summary:

An update for .NET Core is now available for Red Hat Enterprise Linux 8.0
Update Services for SAP Solutions.

Red Hat Product Security has rated this update as having a security impact
of Critical. 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 E4S (v. 8.0) – 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 version is .NET Core Runtime 2.1.20 and SDK 2.1.516.

Security Fix(es):

* .NET Core: XML source markup processing remote code execution
(CVE-2020-1147)

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/):

1856929 – CVE-2020-1147 dotnet: XML source markup processing remote code execution

6. Package List:

Red Hat Enterprise Linux AppStream E4S (v. 8.0):

Source:
dotnet-2.1.516-1.el8_0.src.rpm

x86_64:
dotnet-2.1.516-1.el8_0.x86_64.rpm
dotnet-debuginfo-2.1.516-1.el8_0.x86_64.rpm
dotnet-debugsource-2.1.516-1.el8_0.x86_64.rpm
dotnet-host-2.1.20-1.el8_0.x86_64.rpm
dotnet-host-debuginfo-2.1.20-1.el8_0.x86_64.rpm
dotnet-host-fxr-2.1-2.1.20-1.el8_0.x86_64.rpm
dotnet-host-fxr-2.1-debuginfo-2.1.20-1.el8_0.x86_64.rpm
dotnet-runtime-2.1-2.1.20-1.el8_0.x86_64.rpm
dotnet-runtime-2.1-debuginfo-2.1.20-1.el8_0.x86_64.rpm
dotnet-sdk-2.1-2.1.516-1.el8_0.x86_64.rpm
dotnet-sdk-2.1.5xx-2.1.516-1.el8_0.x86_64.rpm
dotnet-sdk-2.1.5xx-debuginfo-2.1.516-1.el8_0.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-2020-1147
https://access.redhat.com/security/updates/classification/#critical

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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