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Red Hat 7: RHSA-2019:0040-01 Moderate: .NET Core Denial of Service Issue

red hat
Calendar Grey January 9, 2019
Dist Redhat Esm H88
A major update for .NET Core on Red Hat Enterprise Linux is out, aimed at improving security with actionable patches and crucial fixes for vulnerabilities
Updates for rh-dotnet21-dotnet and rh-dotnet22-dotnet are now available for .NET Core on Red Hat Enterprise Linux

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 2.1.5 and 2.2.1.
Security Fix(es):
* .NET Core: NCL - SocketsHttpHandler mishandling 1xx response as a final response leads to info disclosure (CVE-2019-0545)
* .NET Core: ANCM WebSocket DOS (CVE-2019-0548)
* .NET Core: Kestrel - WebSocket DoS via CancellationToken (CoreFX and ASP.NET) (CVE-2019-0564)
For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.
For more information, please refer to the upstream docs in the References section.

Topics%20covered

Topics Covered

security advisory moderate security update Red Hat DoS software fix .NET Core

References

https://access.redhat.com/security/cve/CVE-2019-0545 https://access.redhat.com/security/cve/CVE-2019-0548 https://access.redhat.com/security/cve/CVE-2019-0564 https://access.redhat.com/security/updates/classification#moderate

Package List

.NET Core on Red Hat Enterprise Linux ComputeNode (v. 7):
Source: rh-dotnet21-2.1-6.el7.src.rpm rh-dotnet21-dotnet-2.1.503-1.el7.src.rpm
x86_64: rh-dotnet21-dotnet-sdk-2.1-2.1.503-1.el7.x86_64.rpm rh-dotnet21-runtime-2.1-6.el7.x86_64.rpm
.NET Core on Red Hat Enterprise Linux ComputeNode (v. 7):
Source: rh-dotnet22-2.2-2.el7.src.rpm rh-dotnet22-dotnet-2.2.102-1.el7.src.rpm
x86_64: rh-dotnet22-2.2-2.el7.x86_64.rpm rh-dotnet22-dotnet-2.2.102-1.el7.x86_64.rpm rh-dotnet22-dotnet-debuginfo-2.2.102-1.el7.x86_64.rpm rh-dotnet22-dotnet-host-2.2.1-1.el7.x86_64.rpm rh-dotnet22-dotnet-host-fxr-2.2-2.2.1-1.el7.x86_64.rpm rh-dotnet22-dotnet-runtime-2.2-2.2.1-1.el7.x86_64.rpm rh-dotnet22-dotnet-sdk-2.2-2.2.102-1.el7.x86_64.rpm rh-dotnet22-dotnet-sdk-2.2.1xx-2.2.102-1.el7.x86_64.rpm rh-dotnet22-runtime-2.2-2.el7.x86_64.rpm
.NET Core on Red Hat Enterprise Linux Server (v. 7):
Source: rh-dotnet21-2.1-6.el7.src.rpm rh-dotnet21-dotnet-2.1.503-1.el7.src.rpm
x86_64: rh-dotnet21-dotnet-sdk-2.1-2.1.503-1.el7.x86_64.rpm rh-dotnet21-runtime-2.1-6.el7.x86_64.rpm
.NET Core on Red Hat Enterprise Linux Server (v. 7):
Source: rh-dotnet22-2.2-2.el7.src.rpm rh-dotnet22-dotnet-2.2.102-1.el7.src.rpm
x86_64: rh-dotnet22-2.2-2.el7.x86_64.rpm rh-dotnet22-dotnet-2.2.102-1.el7.x86_64.rpm

Read the Full Advisory


Advisory ID: RHSA-2019:0040-01
Product: .NET Core on Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:0040
Issue date: 2019-01-09

Topic

Updates for rh-dotnet21-dotnet and rh-dotnet22-dotnet are now available for.NET Core on Red Hat Enterprise Linux.Red Hat Product Security has rated this update as having a security impactof Moderate. 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 moderate security update Red Hat DoS software fix .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

1660632 - CVE-2019-0545 .NET Core: NCL - SocketsHttpHandler mishandling 1xx response as a final response leads to info disclosure

1660634 - CVE-2019-0564 .NET Core: Kestrel - WebSocket DoS via CancellationToken (CoreFX and ASP.NET)

1660636 - CVE-2019-0548 .NET Core: ANCM WebSocket DOS

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