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RedHat 7: RHSA-2020-0134-01 Critical: .NET Core SignalR Issues

red hat
Calendar Grey January 16, 2020
Dist Redhat Esm H88
Essential .NET Core patches are released for Red Hat Enterprise Linux targeting significant vulnerabilities. Implement updates immediately!
An update for rh-dotnet30-dotnet and rh-dotnet31-dotnet is now available for .NET Core on Red Hat Enterprise Linux 7

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

For details on how to apply this update, 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 security vulnerabilities are now available. The updated versions are .NET Core SDK 3.0.102, .NET Core Runtime 3.0.2, .NET Core SDK 3.1.101 and .NET Core Runtime 3.1.1.
Security Fixes:
* dotnet: Memory Corruption in SignalR (CVE-2020-0603)
* dotnet: SignalR Denial of Service via backpressure issue (CVE-2020-0602)
Users must rebuild their applications to pick up the fixes.
Default inclusions for applications built with .NET Core have been updated to reference the newest versions and their security fixes.
For more details about the security issues, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE pages listed in the References section.

Topics%20covered

Topics Covered

security advisory denial of service critical memory corruption Red Hat Enterprise Linux dotnet signalR

References

https://access.redhat.com/security/cve/CVE-2020-0602 https://access.redhat.com/security/cve/CVE-2020-0603 https://access.redhat.com/security/updates/classification/#critical

Package List

.NET Core on Red Hat Enterprise Linux ComputeNode (v. 7):
Source: rh-dotnet30-dotnet-3.0.102-3.el7.src.rpm
x86_64: rh-dotnet30-aspnetcore-runtime-3.0-3.0.2-3.el7.x86_64.rpm rh-dotnet30-aspnetcore-targeting-pack-3.0-3.0.2-3.el7.x86_64.rpm rh-dotnet30-dotnet-3.0.102-3.el7.x86_64.rpm rh-dotnet30-dotnet-apphost-pack-3.0-3.0.2-3.el7.x86_64.rpm rh-dotnet30-dotnet-debuginfo-3.0.102-3.el7.x86_64.rpm rh-dotnet30-dotnet-host-3.0.2-3.el7.x86_64.rpm rh-dotnet30-dotnet-hostfxr-3.0-3.0.2-3.el7.x86_64.rpm rh-dotnet30-dotnet-runtime-3.0-3.0.2-3.el7.x86_64.rpm rh-dotnet30-dotnet-sdk-3.0-3.0.102-3.el7.x86_64.rpm rh-dotnet30-dotnet-targeting-pack-3.0-3.0.2-3.el7.x86_64.rpm rh-dotnet30-dotnet-templates-3.0-3.0.102-3.el7.x86_64.rpm rh-dotnet30-netstandard-targeting-pack-2.1-3.0.102-3.el7.x86_64.rpm
.NET Core on Red Hat Enterprise Linux ComputeNode (v. 7):
Source: rh-dotnet31-dotnet-3.1.101-4.el7.src.rpm
x86_64: rh-dotnet31-aspnetcore-runtime-3.1-3.1.1-4.el7.x86_64.rpm rh-dotnet31-aspnetcore-targeting-pack-3.1-3.1.1-4.el7.x86_64.rpm rh-dotnet31-dotnet-3.1.101-4.el7.x86_64.rpm rh-dotnet31-dotnet-apphost-pack-3.1-3.1.1-4.el7.x86_64.rpm rh-dotnet31-dotnet-debuginfo-3.1.101-4.el7.x86_64.rpm rh-dotnet31-dotnet-host-3.1.1-4.el7.x86_64.rpm rh-dotnet31-dotnet-hostfxr-3.1-3.1.1-4.el7.x86_64.rpm

Read the Full Advisory


Severity
critical
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:0134-01
Product: .NET Core on Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:0134
Issue date: 2020-01-16

Topic

An update for rh-dotnet30-dotnet and rh-dotnet31-dotnet is now availablefor .NET Core on Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Critical. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory denial of service critical memory corruption Red Hat Enterprise Linux dotnet signalR

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

1787151 - Update .NET Core 3.0 to Runtime 3.0.2 and SDK 3.0.102

1787174 - Update .NET Core 3.1 to Runtime 3.1.1 and SDK 3.1.101

1789623 - CVE-2020-0602 dotnet: Denial of service via backpressure issue

1789624 - CVE-2020-0603 dotnet: Memory Corruption in SignalR

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