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Red Hat Security Advisory 2020-3699-01

Red Hat Security Advisory 2020-3699-01
Posted Sep 8, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-3699-01 - .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 3.1.108 and .NET Core Runtime 3.1.8. Security Fixes: .NET Core: ASP.NET cookie prefix spoofing vulnerability. Issues addressed include a spoofing vulnerability.

tags | advisory, spoof, vulnerability, asp
systems | linux, redhat
advisories | CVE-2020-1045
MD5 | 3fa3742d20b581bf1ce4a1edfffb538c

Red Hat Security Advisory 2020-3699-01

Change Mirror Download
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====================================================================
Red Hat Security Advisory

Synopsis: Important: .NET Core 3.1 security and bugfix update
Advisory ID: RHSA-2020:3699-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:3699
Issue date: 2020-09-08
CVE Names: CVE-2020-1045
====================================================================
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 security vulnerabilities are now
available. The updated versions are .NET Core SDK 3.1.108 and .NET Core
Runtime 3.1.8.

Security Fixes:

* .NET Core: ASP.NET cookie prefix spoofing vulnerability (CVE-2020-1045)

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/):

1873451 - CVE-2020-1045 dotnet: ASP.NET cookie prefix spoofing vulnerability

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
dotnet3.1-3.1.108-2.el8_2.src.rpm

x86_64:
aspnetcore-runtime-3.1-3.1.8-2.el8_2.x86_64.rpm
aspnetcore-targeting-pack-3.1-3.1.8-2.el8_2.x86_64.rpm
dotnet-3.1.108-2.el8_2.x86_64.rpm
dotnet-apphost-pack-3.1-3.1.8-2.el8_2.x86_64.rpm
dotnet-apphost-pack-3.1-debuginfo-3.1.8-2.el8_2.x86_64.rpm
dotnet-host-3.1.8-2.el8_2.x86_64.rpm
dotnet-host-debuginfo-3.1.8-2.el8_2.x86_64.rpm
dotnet-hostfxr-3.1-3.1.8-2.el8_2.x86_64.rpm
dotnet-hostfxr-3.1-debuginfo-3.1.8-2.el8_2.x86_64.rpm
dotnet-runtime-3.1-3.1.8-2.el8_2.x86_64.rpm
dotnet-runtime-3.1-debuginfo-3.1.8-2.el8_2.x86_64.rpm
dotnet-sdk-3.1-3.1.108-2.el8_2.x86_64.rpm
dotnet-sdk-3.1-debuginfo-3.1.108-2.el8_2.x86_64.rpm
dotnet-targeting-pack-3.1-3.1.8-2.el8_2.x86_64.rpm
dotnet-templates-3.1-3.1.108-2.el8_2.x86_64.rpm
dotnet3.1-debuginfo-3.1.108-2.el8_2.x86_64.rpm
dotnet3.1-debugsource-3.1.108-2.el8_2.x86_64.rpm
netstandard-targeting-pack-2.1-3.1.108-2.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-2020-1045
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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