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RedHat: RHSA-2021-3818-01 Important: .NET 5.0 Linux Security Update

red hat
Calendar Grey October 12, 2021
Scroller Redhat
The recent update for .NET 5.0 on RHEL 7 addresses significant security vulnerabilities and incorporates crucial bug resolution details.
An update for rh-dotnet50-dotnet is now available for .NET 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 a security vulnerability are now available. The updated versions are .NET SDK 5.0.208 and .NET Runtime 5.0.11.
Security Fix(es):
* dotnet: System.DirectoryServices.Protocols.LdapConnection sends credentials in plaintext if TLS handshake fails (CVE-2021-41355)
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 Red Hat security impact bugfix important update RHEL dotnet

References

https://access.redhat.com/security/cve/CVE-2021-41355 https://access.redhat.com/security/updates/classification/#important

Package List

.NET Core on Red Hat Enterprise Linux ComputeNode (v. 7):
Source: rh-dotnet50-dotnet-5.0.208-1.el7_9.src.rpm
x86_64: rh-dotnet50-aspnetcore-runtime-5.0-5.0.11-1.el7_9.x86_64.rpm rh-dotnet50-aspnetcore-targeting-pack-5.0-5.0.11-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-5.0.208-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-apphost-pack-5.0-5.0.11-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-debuginfo-5.0.208-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-host-5.0.11-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-hostfxr-5.0-5.0.11-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-runtime-5.0-5.0.11-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-sdk-5.0-5.0.208-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-sdk-5.0-source-built-artifacts-5.0.208-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-targeting-pack-5.0-5.0.11-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-templates-5.0-5.0.208-1.el7_9.x86_64.rpm rh-dotnet50-netstandard-targeting-pack-2.1-5.0.208-1.el7_9.x86_64.rpm
.NET Core on Red Hat Enterprise Linux Server (v. 7):
Source: rh-dotnet50-dotnet-5.0.208-1.el7_9.src.rpm
x86_64: rh-dotnet50-aspnetcore-runtime-5.0-5.0.11-1.el7_9.x86_64.rpm rh-dotnet50-aspnetcore-targeting-pack-5.0-5.0.11-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-5.0.208-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-apphost-pack-5.0-5.0.11-1.el7_9.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:3818-01
Product: .NET Core on Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3818
Issue date: 2021-10-12

Topic

An update for rh-dotnet50-dotnet is now available for .NET 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 Red Hat security impact bugfix important update RHEL dotnet

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

2006504 - Bootstrap and build .NET 5 using a previously built .NET 5 SDK

2011487 - CVE-2021-41355 dotnet: System.DirectoryServices.Protocols.LdapConnection sends credentials in plaintext if TLS handshake fails

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