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Red Hat Security Advisory 2023-6246-02

Red Hat Security Advisory 2023-6246-02
Posted Nov 13, 2023
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2023-6246-02 - An update for.NET 7.0 is now available for Red Hat Enterprise Linux 9. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service
systems | linux, redhat
advisories | CVE-2023-36799
SHA-256 | c12f21c7f61cfe39b897bf734bf89615aa77a1a8996b64292ecbc53923b3df71

Red Hat Security Advisory 2023-6246-02

Change Mirror Download


The following data is constructed from data provided by Red Hat's json file at:

https://access.redhat.com/security/data/csaf/v2/advisories/2023/rhsa-2023_6246.json

Red Hat officially shut down their mailing list notifications October 10, 2023. Due to this, Packet Storm has recreated the below data as a reference point to raise awareness. It must be noted that due to an inability to easily track revision updates without crawling Red Hat's archive, these advisories are single notifications and we strongly suggest that you visit the Red Hat provided links to ensure you have the latest information available if the subject matter listed pertains to your environment.

- Packet Storm Staff




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

Synopsis: Moderate: .NET 7.0 security update
Advisory ID: RHSA-2023:6246-02
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:6246
Issue date: 2023-11-02
Revision: 02
CVE Names: CVE-2023-36799
====================================================================

Summary:

An update for .NET 7.0 is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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.

The CVE-2023-36799 was previously fixed in .NET 7.0 packages in Red Hat Enterprise Linux 9 via erratum RHSA-2023:5146, which updated .NET to SDK 7.0.111 and Runtime 7.0.11. However, the fix was not included in the upstream SDK 7.0.112 and Runtime 7.0.12, which was added to Red Hat Enterprise Linux 9 via erratum RHSA-2023:5749, introducing a security regression. This erratum re-adds the fix for CVE-2023-36799 to .NET 7.0 packages.

For more details about the regression, refer to the upstream release notes linked to the References section.




Description:

.NET 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 that address a security vulnerability are now available. The updated versions are .NET SDK 7.0.113 and .NET Runtime 7.0.13.

Security Fix(es):

* dotnet: Denial of Service with Client Certificates using .NET Kestrel (CVE-2023-36799)

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.


Solution:

https://access.redhat.com/articles/11258



CVEs:

CVE-2023-36799

References:

https://access.redhat.com/security/updates/classification/#moderate
https://support.microsoft.com/en-gb/topic/-net-7-0-update-october-24-2023-kb5032875-1c20c4da-3b7e-414f-b7e7-5947358c33d9
https://access.redhat.com/errata/RHSA-2023:5146

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