Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2022.2333
.NET 5.0 security, bug fix, and enhancement update
12 May 2022
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: .NET 5.0
Publisher: Red Hat
Operating System: Red Hat
Resolution: Patch/Upgrade
CVE Names: CVE-2022-29145 CVE-2022-29117 CVE-2022-23267
Original Bulletin:
https://access.redhat.com/errata/RHSA-2022:2200
Comment: CVSS (Max): 7.5 CVE-2022-29145 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVSS Source: Red Hat
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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Red Hat Security Advisory
Synopsis: Important: .NET 5.0 security, bug fix, and enhancement update
Advisory ID: RHSA-2022:2200-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:2200
Issue date: 2022-05-11
CVE Names: CVE-2022-23267 CVE-2022-29117 CVE-2022-29145
=====================================================================
1. Summary:
An update for .NET 5.0 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 CodeReady Linux Builder (v. 8) - x86_64
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.
New versions of .NET Core that address a security vulnerability are now
available. The updated versions are .NET Core SDK 5.0.214 and .NET Core
Runtime 5.0.17.
Security Fix(es):
* dotnet: excess memory allocation via HttpClient causes DoS
(CVE-2022-23267)
* dotnet: malicious content causes high CPU and memory usage
(CVE-2022-29117)
* dotnet: parsing HTML causes Denial of Service (CVE-2022-29145)
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.
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/):
2083647 - CVE-2022-29117 dotnet: malicious content causes high CPU and memory usage
2083649 - CVE-2022-29145 dotnet: parsing HTML causes Denial of Service
2083650 - CVE-2022-23267 dotnet: excess memory allocation via HttpClient causes DoS
6. Package List:
Red Hat Enterprise Linux AppStream (v. 8):
Source:
dotnet5.0-5.0.214-1.el8_6.src.rpm
x86_64:
aspnetcore-runtime-5.0-5.0.17-1.el8_6.x86_64.rpm
aspnetcore-targeting-pack-5.0-5.0.17-1.el8_6.x86_64.rpm
dotnet-apphost-pack-5.0-5.0.17-1.el8_6.x86_64.rpm
dotnet-apphost-pack-5.0-debuginfo-5.0.17-1.el8_6.x86_64.rpm
dotnet-hostfxr-5.0-5.0.17-1.el8_6.x86_64.rpm
dotnet-hostfxr-5.0-debuginfo-5.0.17-1.el8_6.x86_64.rpm
dotnet-runtime-5.0-5.0.17-1.el8_6.x86_64.rpm
dotnet-runtime-5.0-debuginfo-5.0.17-1.el8_6.x86_64.rpm
dotnet-sdk-5.0-5.0.214-1.el8_6.x86_64.rpm
dotnet-sdk-5.0-debuginfo-5.0.214-1.el8_6.x86_64.rpm
dotnet-targeting-pack-5.0-5.0.17-1.el8_6.x86_64.rpm
dotnet-templates-5.0-5.0.214-1.el8_6.x86_64.rpm
dotnet5.0-debuginfo-5.0.214-1.el8_6.x86_64.rpm
dotnet5.0-debugsource-5.0.214-1.el8_6.x86_64.rpm
Red Hat CodeReady Linux Builder (v. 8):
x86_64:
dotnet-apphost-pack-5.0-debuginfo-5.0.17-1.el8_6.x86_64.rpm
dotnet-hostfxr-5.0-debuginfo-5.0.17-1.el8_6.x86_64.rpm
dotnet-runtime-5.0-debuginfo-5.0.17-1.el8_6.x86_64.rpm
dotnet-sdk-5.0-debuginfo-5.0.214-1.el8_6.x86_64.rpm
dotnet-sdk-5.0-source-built-artifacts-5.0.214-1.el8_6.x86_64.rpm
dotnet5.0-debuginfo-5.0.214-1.el8_6.x86_64.rpm
dotnet5.0-debugsource-5.0.214-1.el8_6.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-2022-23267
https://access.redhat.com/security/cve/CVE-2022-29117
https://access.redhat.com/security/cve/CVE-2022-29145
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2022 Red Hat, Inc.
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