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AUSCERT External Security Bulletin Redistribution
ESB-2020.2441
Critical: .NET Core security and bugfix update
17 July 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: .NET Core security and bugfix update
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 8
Red Hat Enterprise Linux WS/Desktop 8
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2020-1147
Reference: ASB-2020.0123
ASB-2020.0118
ESB-2020.2418
ESB-2020.2413
Original Bulletin:
https://access.redhat.com/errata/RHSA-2020:2988
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Red Hat Security Advisory
Synopsis: Critical: .NET Core security and bugfix update
Advisory ID: RHSA-2020:2988-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2988
Issue date: 2020-07-16
CVE Names: CVE-2020-1147
=====================================================================
1. Summary:
An update for .NET Core is now available for Red Hat Enterprise Linux 8.
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 EUS (v. 8.1) - 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 EUS (v. 8.1):
Source:
dotnet-2.1.516-1.el8_1.src.rpm
x86_64:
dotnet-debuginfo-2.1.516-1.el8_1.x86_64.rpm
dotnet-debugsource-2.1.516-1.el8_1.x86_64.rpm
dotnet-host-fxr-2.1-2.1.20-1.el8_1.x86_64.rpm
dotnet-host-fxr-2.1-debuginfo-2.1.20-1.el8_1.x86_64.rpm
dotnet-runtime-2.1-2.1.20-1.el8_1.x86_64.rpm
dotnet-runtime-2.1-debuginfo-2.1.20-1.el8_1.x86_64.rpm
dotnet-sdk-2.1-2.1.516-1.el8_1.x86_64.rpm
dotnet-sdk-2.1.5xx-2.1.516-1.el8_1.x86_64.rpm
dotnet-sdk-2.1.5xx-debuginfo-2.1.516-1.el8_1.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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