Red Hat Security Advisory 2023-4449-01

Red Hat Security Advisory 2023-4448-01 - .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 6.0.120 and .NET Runtime 6.0.20. Issues addressed include code execution, denial of service, and heap corruption vulnerabilities.

An update for .NET 6.0 is now available for Red Hat Enterprise Linux 8.6 Extended Update Support. 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.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-2023-29331: A vulnerability was found in dotnet. This issue can lead to a denial of service while processing X509 Certificates. * CVE-2023-29337: A vulnerability was found in dotnet. This issue exists in NuGet where a potential race condition can lead to a symlink attack. * CVE-2023-33128: A vulnerability was found in dotnet. This...

An update for .NET 6.0 is now available for Red Hat Enterprise Linux 8.6 Extended Update Support. 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.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-2023-29331: A vulnerability was found in dotnet. This issue can lead to a denial of service while processing X509 Certificates. * CVE-2023-29337: A vulnerability was found in dotnet. This issue exists in NuGet where a potential race condition can lead to a symlink attack. * CVE-2023-33128: A vulnerability was found in dotnet. This...

An update for .NET 6.0 is now available for Red Hat Enterprise Linux 8.6 Extended Update Support. 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.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-2023-29331: A vulnerability was found in dotnet. This issue can lead to a denial of service while processing X509 Certificates. * CVE-2023-29337: A vulnerability was found in dotnet. This issue exists in NuGet where a potential race condition can lead to a symlink attack. * CVE-2023-33128: A vulnerability was found in dotnet. This...

An update for .NET 6.0 is now available for Red Hat Enterprise Linux 8.6 Extended Update Support. 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.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-2023-29331: A vulnerability was found in dotnet. This issue can lead to a denial of service while processing X509 Certificates. * CVE-2023-29337: A vulnerability was found in dotnet. This issue exists in NuGet where a potential race condition can lead to a symlink attack. * CVE-2023-33128: A vulnerability was found in dotnet. This...

An update for .NET 6.0 is now available for Red Hat Enterprise Linux 9.0 Extended Update Support. 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.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-2023-29331: A vulnerability was found in dotnet. This issue can lead to a denial of service while processing X509 Certificates. * CVE-2023-29337: A vulnerability was found in dotnet. This issue exists in NuGet where a potential race condition can lead to a symlink attack. * CVE-2023-33128: A vulnerability was found in dotnet. This...

An update for .NET 6.0 is now available for Red Hat Enterprise Linux 9.0 Extended Update Support. 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.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-2023-29331: A vulnerability was found in dotnet. This issue can lead to a denial of service while processing X509 Certificates. * CVE-2023-29337: A vulnerability was found in dotnet. This issue exists in NuGet where a potential race condition can lead to a symlink attack. * CVE-2023-33128: A vulnerability was found in dotnet. This...

An update for .NET 6.0 is now available for Red Hat Enterprise Linux 9.0 Extended Update Support. 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.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-2023-29331: A vulnerability was found in dotnet. This issue can lead to a denial of service while processing X509 Certificates. * CVE-2023-29337: A vulnerability was found in dotnet. This issue exists in NuGet where a potential race condition can lead to a symlink attack. * CVE-2023-33128: A vulnerability was found in dotnet. This...

An update for .NET 6.0 is now available for Red Hat Enterprise Linux 9.0 Extended Update Support. 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.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-2023-29331: A vulnerability was found in dotnet. This issue can lead to a denial of service while processing X509 Certificates. * CVE-2023-29337: A vulnerability was found in dotnet. This issue exists in NuGet where a potential race condition can lead to a symlink attack. * CVE-2023-33128: A vulnerability was found in dotnet. This...

Red Hat Security Advisory 2023-4058-01 - .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.

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 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.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-2023-33170: A vulnerability was found in dotNET applications where account lockout maximum failed attempts may not be immediately updated, allowing an attacker to try more passwords and bypass security restrictions. This flaw allows a remote attacker to bypass security features, causing an impact on confidentiality, integrity, and availability.

Ubuntu Security Notice 6217-1 - McKee-Harris, Matt Cotterell, and Jack Moran discovered that .NET did not properly update account lockout maximum failed attempts. An attacker could possibly use this issue to bypass the security feature and attempt to guess more passwords for an account.

# Microsoft Security Advisory CVE-2023-33170: .NET Security Feature Bypass Vulnerability ## <a name="executive-summary"></a>Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in ASP.NET Core 2.1 and above. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exist in ASP.NET Core applications where account lockout maximum failed attempts may not be immediately updated, allowing an attacker to try more passwords. ## Discussion Discussion for this issue can be found at https://github.com/dotnet/aspnetcore/issues/49334 ### <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 ASP.NET 7.0 application running on .NET 7.0.8 or earlier. * Any ASP.NET 6.0 application running on .NET 6.0.19 or earlier. * Any ASP.N...

ASP.NET and Visual Studio Security Feature Bypass Vulnerability

**According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?** Successful exploitation of this vulnerability requires an attacker to win a race condition and also to take additional actions prior to exploitation to prepare the target environment.

Hello everyone! This episode will be about Microsoft Patch Tuesday for June 2023, including vulnerabilities that were added between May and June Patch Tuesdays. As usual, I use my open source Vulristics project to analyse and prioritize vulnerabilities. I took the comments about the vulnerabilities from the Qualys, Tenable, Rapid7, ZDI Patch Tuesday reviews. This time there […]

Hello everyone! This episode will be about Microsoft Patch Tuesday for June 2023, including vulnerabilities that were added between May and June Patch Tuesdays. As usual, I use my open source Vulristics project to analyse and prioritize vulnerabilities. I took the comments about the vulnerabilities from the Qualys, Tenable, Rapid7, ZDI Patch Tuesday reviews. This time there […]

Ubuntu Security Notice 6161-2 - USN-6161-1 fixed vulnerabilities in .NET. The update introduced a regression with regards to how the runtime imported X.509 certificates. This update fixes the problem. It was discovered that .NET did not properly enforce certain restrictions when deserializing a DataSet or DataTable from XML. An attacker could possibly use this issue to elevate their privileges.

Ubuntu Security Notice 6161-2 - USN-6161-1 fixed vulnerabilities in .NET. The update introduced a regression with regards to how the runtime imported X.509 certificates. This update fixes the problem. It was discovered that .NET did not properly enforce certain restrictions when deserializing a DataSet or DataTable from XML. An attacker could possibly use this issue to elevate their privileges.

Ubuntu Security Notice 6161-2 - USN-6161-1 fixed vulnerabilities in .NET. The update introduced a regression with regards to how the runtime imported X.509 certificates. This update fixes the problem. It was discovered that .NET did not properly enforce certain restrictions when deserializing a DataSet or DataTable from XML. An attacker could possibly use this issue to elevate their privileges.

# Microsoft Security Advisory CVE-2023-33128: .NET Remote Code Execution Vulnerability ## <a name="executive-summary"></a>Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 7.0. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in .NET source generator for P/Invokes that can lead to generated code freeing uninitialized memory and crashing. ## Announcement Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/253 ### <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 7.0.1xx SDK 7.0.106 or earlier. * Any .NET 7.0.3xx SDK 7.0.303 or earlier. If your application uses the following package versions, ensure you update to the latest version of .NET....

# Microsoft Security Advisory CVE-2023-29331: .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 when processing X.509 certificates that may result in Denial of Service. Details: [KB5025823 ](https://support.microsoft.com/kb/5025823) ## Announcement Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/257 ### <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 7.0.5 or earlier. * Any .NET 6.0 application running on .NET 6.0.16 or earlier. If your application uses ...

### Description Microsoft is releasing this security advisory to provide information about a vulnerability in .NET and NuGet on Linux. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in .NET 6.0, .NET 7.0 and NuGet(nuget.exe, NuGet.Protocol, NuGet.Common, NuGet.CommandLine, NuGet.Commands, Microsoft.Build.NuGetSdkResolver, NuGet.PackageManagement) where a potential race condition that can lead to a symlink attack on Linux. Non-Linux platforms are not affected. ### Affected software This issue only affects Linux systems. #### NuGet & NuGet Packages - Any NuGet.exe, NuGet.Protocol, NuGet.Common, NuGet.CommandLine, NuGet.Commands, Microsoft.Build.NuGetSdkResolver, NuGet.PackageManagement 6.6.0 version or earlier. - Any NuGet.exe, NuGet.Protocol, NuGet.Common, NuGet.CommandLine, NuGet.Commands, Microsoft.Build.NuGetSdkResolver, NuGet.PackageManagement 6.5.0 version or earlier. - Any NuGet.e...

.NET, .NET Framework, and Visual Studio Denial of Service Vulnerability

NuGet Client Remote Code Execution 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 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.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-2023-24936: No description is available for this CVE. * CVE-2023-29331: No description is available for this CVE. * CVE-2023-29337: No description is available for this CVE. * CVE-2023-33128: .NET and Visual Studio Remote Code Execution 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 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.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-2023-24936: No description is available for this CVE. * CVE-2023-29331: No description is available for this CVE. * CVE-2023-29337: No description is available for this CVE. * CVE-2023-33128: .NET and Visual Studio Remote Code Execution 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 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.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-2023-24936: No description is available for this CVE. * CVE-2023-29331: No description is available for this CVE. * CVE-2023-29337: No description is available for this CVE. * CVE-2023-33128: .NET and Visual Studio Remote Code Execution Vulnerability

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 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.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-2023-24936: No description is available for this CVE. * CVE-2023-29331: No description is available for this CVE. * CVE-2023-29337: No description is available for this CVE. * CVE-2023-33128: .NET and Visual Studio Remote Code Execution Vulnerability

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 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.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-2023-24936: No description is available for this CVE. * CVE-2023-29331: No description is available for this CVE. * CVE-2023-29337: No description is available for this CVE. * CVE-2023-33128: .NET and Visual Studio Remote Code Execution Vulnerability

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 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.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-2023-24936: No description is available for this CVE. * CVE-2023-29331: No description is available for this CVE. * CVE-2023-29337: No description is available for this CVE. * CVE-2023-33128: .NET and Visual Studio Remote Code Execution Vulnerability

Ubuntu Security Notice 6161-1 - It was discovered that .NET did not properly enforce certain restrictions when deserializing a DataSet or DataTable from XML. An attacker could possibly use this issue to elevate their privileges. Kevin Jones discovered that .NET did not properly handle the AIA fetching process for X.509 client certificates. An attacker could possibly use this issue to cause a denial of service.

Ubuntu Security Notice 6161-1 - It was discovered that .NET did not properly enforce certain restrictions when deserializing a DataSet or DataTable from XML. An attacker could possibly use this issue to elevate their privileges. Kevin Jones discovered that .NET did not properly handle the AIA fetching process for X.509 client certificates. An attacker could possibly use this issue to cause a denial of service.

Ubuntu Security Notice 6161-1 - It was discovered that .NET did not properly enforce certain restrictions when deserializing a DataSet or DataTable from XML. An attacker could possibly use this issue to elevate their privileges. Kevin Jones discovered that .NET did not properly handle the AIA fetching process for X.509 client certificates. An attacker could possibly use this issue to cause a denial of service.

.NET and Visual Studio Remote Code Execution Vulnerability