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Red Hat 8 RHSA-2021:0790-01 Critical: dotnet Core Remote Execution

red hat
Calendar Grey March 9, 2021
Dist Redhat Esm H88
Urgent vulnerability patch for .NET Core 3.1 on Red Hat systems. This update mitigates risks associated with remote code execution and includes essential system enhancements.
An update for .NET Core 3.1 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 3.1.113 and .NET Core Runtime 3.1.13.
Security Fix(es):
* dotnet: System.Text.Encodings.Web Remote Code Execution (CVE-2021-26701)
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 remote code execution security fix remote execution red hat enterprise important fix important update dotnet dotnet update system bugfix

References

https://access.redhat.com/security/cve/CVE-2021-26701 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: dotnet3.1-3.1.113-1.el8_3.src.rpm
x86_64: aspnetcore-runtime-3.1-3.1.13-1.el8_3.x86_64.rpm aspnetcore-targeting-pack-3.1-3.1.13-1.el8_3.x86_64.rpm dotnet-apphost-pack-3.1-3.1.13-1.el8_3.x86_64.rpm dotnet-apphost-pack-3.1-debuginfo-3.1.13-1.el8_3.x86_64.rpm dotnet-hostfxr-3.1-3.1.13-1.el8_3.x86_64.rpm dotnet-hostfxr-3.1-debuginfo-3.1.13-1.el8_3.x86_64.rpm dotnet-runtime-3.1-3.1.13-1.el8_3.x86_64.rpm dotnet-runtime-3.1-debuginfo-3.1.13-1.el8_3.x86_64.rpm dotnet-sdk-3.1-3.1.113-1.el8_3.x86_64.rpm dotnet-sdk-3.1-debuginfo-3.1.113-1.el8_3.x86_64.rpm dotnet-targeting-pack-3.1-3.1.13-1.el8_3.x86_64.rpm dotnet-templates-3.1-3.1.113-1.el8_3.x86_64.rpm dotnet3.1-debuginfo-3.1.113-1.el8_3.x86_64.rpm dotnet3.1-debugsource-3.1.113-1.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-2021:0790-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0790
Issue date: 2021-03-09

Topic

An update for .NET Core 3.1 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 Red Hat remote code execution security fix remote execution red hat enterprise important fix important update dotnet dotnet update system bugfix

Relevant Releases Architectures

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

Bugs Fixed

1933740 - CVE-2021-26701 dotnet: System.Text.Encodings.Web Remote Code Execution

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