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AUSCERT External Security Bulletin Redistribution
ESB-2019.1839
Important: dotnet security, bug fix, and enhancement update
23 May 2019
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: dotnet
Publisher: Red Hat
Operating System: Red Hat
Impact/Access: Modify Arbitrary Files -- Existing Account
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-0981 CVE-2019-0980 CVE-2019-0820
CVE-2019-0757
Reference: ASB-2019.0139
ASB-2019.0069
ESB-2019.1740
ESB-2019.0808
Original Bulletin:
https://access.redhat.com/errata/RHSA-2019:1259
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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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