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Red Hat Security Advisory 2023-6245-01
Red Hat Security Advisory 2023-6245-01 - An update for.NET 6.0 is now available for Red Hat Enterprise Linux 8. Issues addressed include a denial of service vulnerability.
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_6245.jsonRed 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 AdvisorySynopsis: Moderate: .NET 6.0 security updateAdvisory ID: RHSA-2023:6245-01Product: Red Hat Enterprise LinuxAdvisory URL: https://access.redhat.com/errata/RHSA-2023:6245Issue date: 2023-11-01Revision: 01CVE Names: CVE-2023-36799====================================================================Summary: An update for .NET 6.0 is now available for Red Hat Enterprise Linux 8.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 6.0 packages in Red Hat Enterprise Linux 8 via erratum RHSA-2023:5144, which updated .NET to SDK 6.0.122 and Runtime 6.0.22. However, the fix was not included in the upstream SDK 6.0.123 and Runtime 6.0.23, which was added to Red Hat Enterprise Linux 8 via erratum RHSA-2023:5710, introducing a security regression. This erratum re-adds the fix for CVE-2023-36799 to .NET 6.0 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 6.0.124 and .NET Runtime 6.0.24.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/11258CVEs:CVE-2023-36799References:https://access.redhat.com/security/updates/classification/#moderatehttps://support.microsoft.com/en-gb/topic/-net-6-0-update-october-24-2023-kb5032874-c7206ee0-8768-496c-a122-eac43b8b85c9https://access.redhat.com/errata/RHSA-2023:5144Related news
Red Hat Security Advisory 2023-6247-01 - An update for.NET 7.0 is now available for Red Hat Enterprise Linux 8. Issues addressed include a denial of service vulnerability.
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.
Red Hat Security Advisory 2023-6242-01 - An update for.NET 6.0 is now available for Red Hat Enterprise Linux 9. Issues addressed include a denial of service vulnerability.
Ubuntu Security Notice 6362-2 - USN-6362-1 fixed vulnerabilities in .Net. It was discovered that the fix for [CVE-2023-36799] was incomplete. This update fixes the problem. Kevin Jones discovered that .NET did not properly process certain X.509 certificates. An attacker could possibly use this issue to cause a denial of service.
Ubuntu Security Notice 6438-2 - USN-6438-1 fixed vulnerabilities in .Net. It was discovered that the fix for [CVE-2023-36799] was incomplete. This update fixes the problem. Kevin Jones discovered that .NET did not properly process certain X.509 certificates. An attacker could possibly use this issue to cause a denial of service. It was discovered that the .NET Kestrel web server did not properly handle HTTP/2 requests. A remote attacker could possibly use this issue to cause a denial of service.
Red Hat Security Advisory 2023-5142-01 - .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 6.0.122 and .NET Runtime 6.0.22. Issues addressed include a denial of service vulnerability.
Red Hat Security Advisory 2023-5144-01 - .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 6.0.122 and .NET Runtime 6.0.22. Issues addressed include a denial of service vulnerability.
Red Hat Security Advisory 2023-5145-01 - .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 7.0.111 and .NET Runtime 7.0.11. Issues addressed include a denial of service vulnerability.
An update for .NET 6.0 is now available for Red Hat Enterprise Linux 7. 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.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-36799: A vulnerability was found in dotnet. This issue can lead to a denial of service when processing X.509 certificates.
# Microsoft Security Advisory CVE-2023-36799: .NET Denial of Service Vulnerability ## <a name="executive-summary"></a>Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 7.0 and .NET 6.0. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in .NET where reading a maliciously crafted X.509 certificate may result in Denial of Service. This issue only affects Linux systems. ## Announcement Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/275 ### <a name="mitigation-factors"></a>Mitigation factors Microsoft has not identified any mitigating factors for this vulnerability. ## <a name="affected-software"></a>Affected software * Any .NET 7.0 application running on .NET 7.0.10 or earlier. * Any .NET 6.0 application running on .NET 6.0.21 or earlier. If your application uses the followin...
.NET Core and Visual Studio Denial of Service Vulnerability