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[RHSA-2019:1259-01] Important: dotnet security, bug fix, and enhancement update



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

Synopsis:          Important: dotnet security, bug fix, and enhancement update
Advisory ID:       RHSA-2019:1259-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2019:1259
Issue date:        2019-05-22
CVE Names:         CVE-2019-0757 CVE-2019-0820 CVE-2019-0980 
                   CVE-2019-0981 
=====================================================================

1. Summary:

An update for dotnet is now available for Red Hat Enterprise Linux 8.

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:

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

3. Description:

.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.

A new version of .NET Core that address security vulnerabilities is now
available. The updated version is .NET Core Runtime 2.1.11 and SDK 2.1.507.

Security Fix(es):

* dotnet: NuGet Tampering Vulnerability (CVE-2019-0757)

* dotnet: timeouts for regular expressions are not enforced (CVE-2019-0820)

* dotnet: infinite loop in URI.TryCreate leading to ASP.Net Core Denial of
Service (CVE-2019-0980)

* dotnet: crash in IPAddress.TryCreate leading to ASP.Net Core Denial of
Service (CVE-2019-0981)

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.

Bug Fix(es):

* dotnet: new SocketException((int)SocketError.InvalidArgument).Message is
empty (BZ#1712471)

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/):

1685475 - CVE-2019-0757 dotnet: NuGet Tampering Vulnerability
1696836 - Update .NET Core 2.1 to Runtime 2.1.10 and SDK 2.1.506
1705502 - CVE-2019-0980 dotnet: infinite loop in Uri.TryCreate leading to ASP.Net Core Denial of Service
1705504 - CVE-2019-0981 dotnet: crash in IPAddress.TryCreate leading to ASP.Net Core Denial of Service
1705506 - CVE-2019-0820 dotnet: timeouts for regular expressions are not enforced
1710068 - Update .NET Core 2.1 to Runtime 2.1.11 and SDK 2.1.507
1712471 - new SocketException((int)SocketError.InvalidArgument).Message is empty

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
dotnet-2.1.507-2.el8_0.src.rpm

x86_64:
dotnet-2.1.507-2.el8_0.x86_64.rpm
dotnet-debuginfo-2.1.507-2.el8_0.x86_64.rpm
dotnet-debugsource-2.1.507-2.el8_0.x86_64.rpm
dotnet-host-2.1.11-2.el8_0.x86_64.rpm
dotnet-host-debuginfo-2.1.11-2.el8_0.x86_64.rpm
dotnet-host-fxr-2.1-2.1.11-2.el8_0.x86_64.rpm
dotnet-host-fxr-2.1-debuginfo-2.1.11-2.el8_0.x86_64.rpm
dotnet-runtime-2.1-2.1.11-2.el8_0.x86_64.rpm
dotnet-runtime-2.1-debuginfo-2.1.11-2.el8_0.x86_64.rpm
dotnet-sdk-2.1-2.1.507-2.el8_0.x86_64.rpm
dotnet-sdk-2.1.5xx-2.1.507-2.el8_0.x86_64.rpm
dotnet-sdk-2.1.5xx-debuginfo-2.1.507-2.el8_0.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-2019-0757
https://access.redhat.com/security/cve/CVE-2019-0820
https://access.redhat.com/security/cve/CVE-2019-0980
https://access.redhat.com/security/cve/CVE-2019-0981
https://access.redhat.com/security/updates/classification/#important
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0757
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0820
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0980
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0981
https://github.com/dotnet/core/blob/master/release-notes/2.1/2.1.11/2.1.11.md

8. Contact:

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

Copyright 2019 Red Hat, Inc.
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