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Red Hat Security Advisory 2020-0130-01

Red Hat Security Advisory 2020-0130-01
Posted Jan 16, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-0130-01 - .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 and .NET Core Runtime 3.0.2. Security Fixes: dotnet: Memory Corruption in SignalR. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service, vulnerability
systems | linux, redhat
advisories | CVE-2020-0602, CVE-2020-0603
MD5 | f5a0048385d31c994a41184256b88116

Red Hat Security Advisory 2020-0130-01

Change Mirror Download
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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-2020:0130-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:0130
Issue date: 2020-01-16
CVE Names: CVE-2020-0602 CVE-2020-0603
====================================================================
1. Summary:

An update for dotnet3.0 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 (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 security vulnerabilities are now
available. The updated versions are .NET Core SDK 3.0.102 and .NET Core
Runtime 3.0.2.

Security Fixes:

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

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

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/):

1788171 - Update .NET Core 3.0 to Runtime 3.0.2 and SDK 3.0.102 [rhel-8.1.0.z]
1789623 - CVE-2020-0602 dotnet: Denial of service via backpressure issue
1789624 - CVE-2020-0603 dotnet: Memory Corruption in SignalR

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
dotnet3.0-3.0.102-2.el8_1.src.rpm

x86_64:
aspnetcore-runtime-3.0-3.0.2-2.el8_1.x86_64.rpm
aspnetcore-targeting-pack-3.0-3.0.2-2.el8_1.x86_64.rpm
dotnet-3.0.102-2.el8_1.x86_64.rpm
dotnet-apphost-pack-3.0-3.0.2-2.el8_1.x86_64.rpm
dotnet-apphost-pack-3.0-debuginfo-3.0.2-2.el8_1.x86_64.rpm
dotnet-host-3.0.2-2.el8_1.x86_64.rpm
dotnet-host-debuginfo-3.0.2-2.el8_1.x86_64.rpm
dotnet-hostfxr-3.0-3.0.2-2.el8_1.x86_64.rpm
dotnet-hostfxr-3.0-debuginfo-3.0.2-2.el8_1.x86_64.rpm
dotnet-runtime-3.0-3.0.2-2.el8_1.x86_64.rpm
dotnet-runtime-3.0-debuginfo-3.0.2-2.el8_1.x86_64.rpm
dotnet-sdk-3.0-3.0.102-2.el8_1.x86_64.rpm
dotnet-sdk-3.0-debuginfo-3.0.102-2.el8_1.x86_64.rpm
dotnet-targeting-pack-3.0-3.0.2-2.el8_1.x86_64.rpm
dotnet-templates-3.0-3.0.102-2.el8_1.x86_64.rpm
dotnet3.0-debuginfo-3.0.102-2.el8_1.x86_64.rpm
dotnet3.0-debugsource-3.0.102-2.el8_1.x86_64.rpm
netstandard-targeting-pack-2.1-3.0.102-2.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-2020-0602
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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