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Red Hat Enterprise Linux 8: RHSA-2021-0474-01 Important: dotnet DoS

red hat
Calendar Grey February 10, 2021
Dist Redhat Esm H88
Ubuntu releases security patch for Java 8 on 20.04 LTS, mitigating critical vulnerabilities linked to remote code execution threats.
An update for .NET Core 2.1 is now available for Red Hat Enterprise Linux 8

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

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 a security vulnerability are now available. The updated versions are .NET Core SDK 2.1.521 and .NET Core Runtime 2.1.25.
Security Fix(es):
* dotnet: certificate chain building recursion Denial of Service (CVE-2021-1721)
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.

Topics%20covered

Topics Covered

security advisory security update security issue Red Hat important Denial of Service bugfix important advisory dotnet

References

https://access.redhat.com/security/cve/CVE-2021-1721 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: dotnet-2.1.521-1.el8_3.src.rpm
x86_64: dotnet-debuginfo-2.1.521-1.el8_3.x86_64.rpm dotnet-debugsource-2.1.521-1.el8_3.x86_64.rpm dotnet-host-fxr-2.1-2.1.25-1.el8_3.x86_64.rpm dotnet-host-fxr-2.1-debuginfo-2.1.25-1.el8_3.x86_64.rpm dotnet-runtime-2.1-2.1.25-1.el8_3.x86_64.rpm dotnet-runtime-2.1-debuginfo-2.1.25-1.el8_3.x86_64.rpm dotnet-sdk-2.1-2.1.521-1.el8_3.x86_64.rpm dotnet-sdk-2.1.5xx-2.1.521-1.el8_3.x86_64.rpm dotnet-sdk-2.1.5xx-debuginfo-2.1.521-1.el8_3.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
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:0474-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0474
Issue date: 2021-02-10

Topic

An update for .NET Core 2.1 is now available for Red Hat Enterprise Linux8.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory security update security issue Red Hat important Denial of Service bugfix important advisory dotnet

Relevant Releases Architectures

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

Bugs Fixed

1926918 - CVE-2021-1721 dotnet: certificate chain building recursion Denial of Service

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