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Red Hat Security Advisory

Synopsis:          Critical: .NET Core on Red Hat Enterprise Linux security and bug fix update
Advisory ID:       RHSA-2020:0134-01
Product:           .NET Core on Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2020:0134
Issue date:        2020-01-16
CVE Names:         CVE-2020-0602 CVE-2020-0603
====================================================================
1. Summary:

An update for rh-dotnet30-dotnet and rh-dotnet31-dotnet is now available
for .NET Core on Red Hat Enterprise Linux 7.

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:

.NET Core on Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64
.NET Core on Red Hat Enterprise Linux Server (v. 7) - x86_64
.NET Core on Red Hat Enterprise Linux Workstation (v. 7) - 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 security vulnerabilities are now
available. The updated versions are .NET Core SDK 3.0.102, .NET Core
Runtime 3.0.2, .NET Core SDK 3.1.101 and .NET Core Runtime 3.1.1.

Security Fixes:

* dotnet: Memory Corruption in SignalR (CVE-2020-0603)

* dotnet: SignalR Denial of Service via backpressure issue (CVE-2020-0602)

Users must rebuild their applications to pick up the fixes.

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 issues, including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
pages listed in the References section.

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

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

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

1787151 - Update .NET Core 3.0 to Runtime 3.0.2 and SDK 3.0.102
1787174 - Update .NET Core 3.1 to Runtime 3.1.1 and SDK 3.1.101
1789623 - CVE-2020-0602 dotnet: Denial of service via backpressure issue
1789624 - CVE-2020-0603 dotnet: Memory Corruption in SignalR

6. Package List:

.NET Core on Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
rh-dotnet30-dotnet-3.0.102-3.el7.src.rpm

x86_64:
rh-dotnet30-aspnetcore-runtime-3.0-3.0.2-3.el7.x86_64.rpm
rh-dotnet30-aspnetcore-targeting-pack-3.0-3.0.2-3.el7.x86_64.rpm
rh-dotnet30-dotnet-3.0.102-3.el7.x86_64.rpm
rh-dotnet30-dotnet-apphost-pack-3.0-3.0.2-3.el7.x86_64.rpm
rh-dotnet30-dotnet-debuginfo-3.0.102-3.el7.x86_64.rpm
rh-dotnet30-dotnet-host-3.0.2-3.el7.x86_64.rpm
rh-dotnet30-dotnet-hostfxr-3.0-3.0.2-3.el7.x86_64.rpm
rh-dotnet30-dotnet-runtime-3.0-3.0.2-3.el7.x86_64.rpm
rh-dotnet30-dotnet-sdk-3.0-3.0.102-3.el7.x86_64.rpm
rh-dotnet30-dotnet-targeting-pack-3.0-3.0.2-3.el7.x86_64.rpm
rh-dotnet30-dotnet-templates-3.0-3.0.102-3.el7.x86_64.rpm
rh-dotnet30-netstandard-targeting-pack-2.1-3.0.102-3.el7.x86_64.rpm

.NET Core on Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
rh-dotnet31-dotnet-3.1.101-4.el7.src.rpm

x86_64:
rh-dotnet31-aspnetcore-runtime-3.1-3.1.1-4.el7.x86_64.rpm
rh-dotnet31-aspnetcore-targeting-pack-3.1-3.1.1-4.el7.x86_64.rpm
rh-dotnet31-dotnet-3.1.101-4.el7.x86_64.rpm
rh-dotnet31-dotnet-apphost-pack-3.1-3.1.1-4.el7.x86_64.rpm
rh-dotnet31-dotnet-debuginfo-3.1.101-4.el7.x86_64.rpm
rh-dotnet31-dotnet-host-3.1.1-4.el7.x86_64.rpm
rh-dotnet31-dotnet-hostfxr-3.1-3.1.1-4.el7.x86_64.rpm
rh-dotnet31-dotnet-runtime-3.1-3.1.1-4.el7.x86_64.rpm
rh-dotnet31-dotnet-sdk-3.1-3.1.101-4.el7.x86_64.rpm
rh-dotnet31-dotnet-targeting-pack-3.1-3.1.1-4.el7.x86_64.rpm
rh-dotnet31-dotnet-templates-3.1-3.1.101-4.el7.x86_64.rpm
rh-dotnet31-netstandard-targeting-pack-2.1-3.1.101-4.el7.x86_64.rpm

.NET Core on Red Hat Enterprise Linux Server (v. 7):

Source:
rh-dotnet30-dotnet-3.0.102-3.el7.src.rpm

x86_64:
rh-dotnet30-aspnetcore-runtime-3.0-3.0.2-3.el7.x86_64.rpm
rh-dotnet30-aspnetcore-targeting-pack-3.0-3.0.2-3.el7.x86_64.rpm
rh-dotnet30-dotnet-3.0.102-3.el7.x86_64.rpm
rh-dotnet30-dotnet-apphost-pack-3.0-3.0.2-3.el7.x86_64.rpm
rh-dotnet30-dotnet-debuginfo-3.0.102-3.el7.x86_64.rpm
rh-dotnet30-dotnet-host-3.0.2-3.el7.x86_64.rpm
rh-dotnet30-dotnet-hostfxr-3.0-3.0.2-3.el7.x86_64.rpm
rh-dotnet30-dotnet-runtime-3.0-3.0.2-3.el7.x86_64.rpm
rh-dotnet30-dotnet-sdk-3.0-3.0.102-3.el7.x86_64.rpm
rh-dotnet30-dotnet-targeting-pack-3.0-3.0.2-3.el7.x86_64.rpm
rh-dotnet30-dotnet-templates-3.0-3.0.102-3.el7.x86_64.rpm
rh-dotnet30-netstandard-targeting-pack-2.1-3.0.102-3.el7.x86_64.rpm

.NET Core on Red Hat Enterprise Linux Server (v. 7):

Source:
rh-dotnet31-dotnet-3.1.101-4.el7.src.rpm

x86_64:
rh-dotnet31-aspnetcore-runtime-3.1-3.1.1-4.el7.x86_64.rpm
rh-dotnet31-aspnetcore-targeting-pack-3.1-3.1.1-4.el7.x86_64.rpm
rh-dotnet31-dotnet-3.1.101-4.el7.x86_64.rpm
rh-dotnet31-dotnet-apphost-pack-3.1-3.1.1-4.el7.x86_64.rpm
rh-dotnet31-dotnet-debuginfo-3.1.101-4.el7.x86_64.rpm
rh-dotnet31-dotnet-host-3.1.1-4.el7.x86_64.rpm
rh-dotnet31-dotnet-hostfxr-3.1-3.1.1-4.el7.x86_64.rpm
rh-dotnet31-dotnet-runtime-3.1-3.1.1-4.el7.x86_64.rpm
rh-dotnet31-dotnet-sdk-3.1-3.1.101-4.el7.x86_64.rpm
rh-dotnet31-dotnet-targeting-pack-3.1-3.1.1-4.el7.x86_64.rpm
rh-dotnet31-dotnet-templates-3.1-3.1.101-4.el7.x86_64.rpm
rh-dotnet31-netstandard-targeting-pack-2.1-3.1.101-4.el7.x86_64.rpm

.NET Core on Red Hat Enterprise Linux Workstation (v. 7):

Source:
rh-dotnet30-dotnet-3.0.102-3.el7.src.rpm

x86_64:
rh-dotnet30-aspnetcore-runtime-3.0-3.0.2-3.el7.x86_64.rpm
rh-dotnet30-aspnetcore-targeting-pack-3.0-3.0.2-3.el7.x86_64.rpm
rh-dotnet30-dotnet-3.0.102-3.el7.x86_64.rpm
rh-dotnet30-dotnet-apphost-pack-3.0-3.0.2-3.el7.x86_64.rpm
rh-dotnet30-dotnet-debuginfo-3.0.102-3.el7.x86_64.rpm
rh-dotnet30-dotnet-host-3.0.2-3.el7.x86_64.rpm
rh-dotnet30-dotnet-hostfxr-3.0-3.0.2-3.el7.x86_64.rpm
rh-dotnet30-dotnet-runtime-3.0-3.0.2-3.el7.x86_64.rpm
rh-dotnet30-dotnet-sdk-3.0-3.0.102-3.el7.x86_64.rpm
rh-dotnet30-dotnet-targeting-pack-3.0-3.0.2-3.el7.x86_64.rpm
rh-dotnet30-dotnet-templates-3.0-3.0.102-3.el7.x86_64.rpm
rh-dotnet30-netstandard-targeting-pack-2.1-3.0.102-3.el7.x86_64.rpm

.NET Core on Red Hat Enterprise Linux Workstation (v. 7):

Source:
rh-dotnet31-dotnet-3.1.101-4.el7.src.rpm

x86_64:
rh-dotnet31-aspnetcore-runtime-3.1-3.1.1-4.el7.x86_64.rpm
rh-dotnet31-aspnetcore-targeting-pack-3.1-3.1.1-4.el7.x86_64.rpm
rh-dotnet31-dotnet-3.1.101-4.el7.x86_64.rpm
rh-dotnet31-dotnet-apphost-pack-3.1-3.1.1-4.el7.x86_64.rpm
rh-dotnet31-dotnet-debuginfo-3.1.101-4.el7.x86_64.rpm
rh-dotnet31-dotnet-host-3.1.1-4.el7.x86_64.rpm
rh-dotnet31-dotnet-hostfxr-3.1-3.1.1-4.el7.x86_64.rpm
rh-dotnet31-dotnet-runtime-3.1-3.1.1-4.el7.x86_64.rpm
rh-dotnet31-dotnet-sdk-3.1-3.1.101-4.el7.x86_64.rpm
rh-dotnet31-dotnet-targeting-pack-3.1-3.1.1-4.el7.x86_64.rpm
rh-dotnet31-dotnet-templates-3.1-3.1.101-4.el7.x86_64.rpm
rh-dotnet31-netstandard-targeting-pack-2.1-3.1.101-4.el7.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-2020-0602
https://access.redhat.com/security/cve/CVE-2020-0603
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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