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Red Hat Enterprise Linux: RHSA-2020-0130-01 Critical: .NET Core Issues

red hat
Calendar Grey January 16, 2020
Dist Redhat Esm H88
Significant vulnerability addressed in .NET Core for RHEL 8; key update specifics and resolutions provided.
An update for dotnet3.0 is now available for Red Hat Enterprise Linux 8

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

Summary

.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.

Topics%20covered

Topics Covered

security advisory denial of service critical memory corruption red hat enterprise dotnet core

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

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/


Severity
critical
Lowest
Low
Medium
High
Critical

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

Topic

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 impactof Critical. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory denial of service critical memory corruption red hat enterprise dotnet core

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - x86_64

Bugs Fixed

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

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