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====================================================================                   Red Hat Security Advisory

Synopsis:          Important: .NET Core 3.1 on RHEL 7 security and bugfix update
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
CVE Names:         CVE-2021-26423 CVE-2021-34485 CVE-2021-34532 
====================================================================
1. Summary:

An update for .NET Core 3.1 is now available for .NET Core on Red Hat
Enterprise Linux.

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:

.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

3. Description:

.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.

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/):

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

6. 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
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 Workstation (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

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-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

8. Contact:

The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2021 Red Hat, Inc.
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RHSA-announce@redhat.com
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RedHat: RHSA-2021-3143:01 Important: .NET Core 3.1 on RHEL 7 security and

An update for .NET Core 3.1 is now available for .NET Core on Red Hat Enterprise Linux

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.



Summary


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

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 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 Workstation (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
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
Advisory ID: RHSA-2021:3143-01
Product: .NET Core on Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3143
Issued Date: : 2021-08-11
CVE Names: CVE-2021-26423 CVE-2021-34485 CVE-2021-34532

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.


Topic


 

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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