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RedHat RHEL 7: RHSA-2021-3143-01 Important ASP.NET Core Fixes

red hat
Calendar Grey August 11, 2021
Dist Redhat Esm H88
Significant announcement regarding .NET Core 3.1 for Red Hat Enterprise Linux 7 tackles vulnerabilities and resolves various bugs.
An update for .NET Core 3.1 is now available for .NET Core on Red Hat Enterprise Linux

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 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 that address security vulnerabilities are now available. The updated versions are .NET SDK 3.1.118 and .NET Runtime 3.1.18.
Security Fix(es):
* dotnet: ASP.NET Core WebSocket frame processing DoS (CVE-2021-26423)
* dotnet: Dump file created world-readable (CVE-2021-34485)
* dotnet: ASP.NET Core JWT token logging (CVE-2021-34532)
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 update DoS attack security fix important RHEL ASP.NET Core

References

https://access.redhat.com/security/cve/CVE-2021-26423 https://access.redhat.com/security/cve/CVE-2021-34485 https://access.redhat.com/security/cve/CVE-2021-34532 https://access.redhat.com/security/updates/classification/#important

Package List

.NET Core on Red Hat Enterprise Linux ComputeNode (v. 7):
Source: rh-dotnet31-dotnet-3.1.118-1.el7_9.src.rpm
x86_64: rh-dotnet31-aspnetcore-runtime-3.1-3.1.18-1.el7_9.x86_64.rpm rh-dotnet31-aspnetcore-targeting-pack-3.1-3.1.18-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-3.1.118-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-apphost-pack-3.1-3.1.18-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-debuginfo-3.1.118-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-host-3.1.18-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-hostfxr-3.1-3.1.18-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-runtime-3.1-3.1.18-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-sdk-3.1-3.1.118-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-targeting-pack-3.1-3.1.18-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-templates-3.1-3.1.118-1.el7_9.x86_64.rpm rh-dotnet31-netstandard-targeting-pack-2.1-3.1.118-1.el7_9.x86_64.rpm
.NET Core on Red Hat Enterprise Linux Server (v. 7):
Source: rh-dotnet31-dotnet-3.1.118-1.el7_9.src.rpm
x86_64: rh-dotnet31-aspnetcore-runtime-3.1-3.1.18-1.el7_9.x86_64.rpm rh-dotnet31-aspnetcore-targeting-pack-3.1-3.1.18-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-3.1.118-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-apphost-pack-3.1-3.1.18-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-debuginfo-3.1.118-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-host-3.1.18-1.el7_9.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:3143-01
Product: .NET Core on Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3143
Issue date: 2021-08-11

Topic

An update for .NET Core 3.1 is now available for .NET Core on Red HatEnterprise Linux.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 update DoS attack security fix important RHEL ASP.NET Core

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

Bugs Fixed

1990286 - CVE-2021-34485 dotnet: Dump file created world-readable

1990295 - CVE-2021-26423 dotnet: ASP.NET Core WebSocket frame processing DoS

1990300 - CVE-2021-34532 dotnet: ASP.NET Core JWT token logging

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