A vulnerability was found in Git. This security flaw occurs when renaming or deleting a section from a configuration file, where certain malicious configuration values may be misinterpreted as the beginning of a new configuration section. This flaw leads to arbitrary configuration injection.

A vulnerability was found in Git. This security flaw occurs when Git compiles with runtime prefix support and runs without translated messages, and it still uses the gettext machinery to display messages, which subsequently looks for translated messages in unexpected places. This flaw allows the malicious placement of crafted messages.

A vulnerability was found in Git. This security flaw occurs when feeding specially crafted input to git apply --reject; a path outside the working tree can be overwritten with partially controlled contents corresponding to the rejected hunk(s) from the given patch.

Microsoft Security Advisory CVE-2023-36792: .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 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 Microsoft.DiaSymReader.Native.amd64.dll when reading a corrupted PDB file which may lead to remote code execution. This issue only affects Windows systems.

Note: The vulnerabilities CVE-2023-36792, CVE-2023-36793, CVE-2023-36792, CVE-2023-36796 are all resolved by a single patch. Get affected software to resolve all of them.

Discussion

Discussion for this issue can be found at https://github.com/dotnet/runtime/issues/91944

<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 following package versions, ensure you update to the latest version of .NET.

<a name=".NET 7"></a>.NET 7

Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- Microsoft.NETCore.App.Runtime.win-arm64 | >= 7.0.0, <= 7.0.10 | 7.0.11 Microsoft.NETCore.App.Runtime.win-x64 | >= 7.0.0, <= 7.0.10 | 7.0.11 Microsoft.NETCore.App.Runtime.win-x86 | >= 7.0.0, <= 7.0.10 | 7.0.11

<a name=".NET 6"></a>.NET 6

Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- Microsoft.NETCore.App.Runtime.win-arm64 | >= 6.0.0, <= 6.0.21 | 6.0.22 Microsoft.NETCore.App.Runtime.win-x64 | >= 6.0.0, <= 6.0.21 | 6.0.22 Microsoft.NETCore.App.Runtime.win-x86 | >= 6.0.0, <= 6.0.21 | 6.0.22

Advisory FAQ

<a name="how-affected"></a>How do I know if I am affected?

If you have a runtime or SDK with a version listed, or an affected package listed in affected software, you're exposed to the vulnerability.

<a name="how-fix"></a>How do I fix the issue?

To fix the issue please install the latest version of .NET 6.0 or .NET 7.0. If you have installed one or more .NET SDKs through Visual Studio, Visual Studio will prompt you to update Visual Studio, which will also update your .NET SDKs. If you are using one of the affected packages, please update to the patched version listed above. If you have .NET 6.0 or greater installed, you can list the versions you have installed by running the dotnet --info command. You will see output like the following;

.NET Core SDK (reflecting any global.json):

Version: 6.0.300 Commit: 8473146e7d

Runtime Environment:

OS Name: Windows OS Version: 10.0.18363 OS Platform: Windows RID: win10-x64 Base Path: C:\Program Files\dotnet\sdk\6.0.300\

Host (useful for support):

Version: 6.0.5 Commit: 8473146e7d

.NET Core SDKs installed:

6.0.300 [C:\Program Files\dotnet\sdk]

.NET Core runtimes installed:

Microsoft.AspNetCore.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.NETCore.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.WindowsDesktop.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

To install additional .NET Core runtimes or SDKs: https://aka.ms/dotnet-download

If you're using .NET 7.0, you should download and install Runtime 7.0.11 or SDK 7.0.111 (for Visual Studio 2022 v17.4) from https://dotnet.microsoft.com/download/dotnet-core/7.0. If you're using .NET 6.0, you should download and install Runtime 6.0.22 or SDK 6.0.317 (for Visual Studio 2022 v17.2) from https://dotnet.microsoft.com/download/dotnet-core/6.0.

.NET 6.0 and and .NET 7.0 updates are also available from Microsoft Update. To access this either type "Check for updates" in your Windows search, or open Settings, choose Update & Security and then click Check for Updates.

Once you have installed the updated runtime or SDK, restart your apps for the update to take effect.

Additionally, if you've deployed self-contained applications targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.

Other Information

Reporting Security Issues

If you have found a potential security issue in .NET 6.0 or .NET 7.0, please email details to secure@microsoft.com. Reports may qualify for the Microsoft .NET Core & .NET 5 Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at <https://aka.ms/corebounty>.

Support

You can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime and https://github.com/dotnet/aspnet/. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue.

Disclaimer

The information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

External Links

CVE-2023-36792

Revisions

V1.0 (September 12, 2023): Advisory published.

Version 1.0

Last Updated 2023-09-12

Microsoft Security Advisory CVE-2023-36793: .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 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 Microsoft.DiaSymReader.Native.amd64.dll when reading a corrupted PDB file which may lead to remote code execution. This issue only affects Windows systems.

Note: The vulnerabilities CVE-2023-36792, CVE-2023-36793, CVE-2023-36792, CVE-2023-36796 are all resolved by a single patch. Get affected software to resolve all of them.

Discussion

Discussion for this issue can be found at https://github.com/dotnet/runtime/issues/91947

<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 following package versions, ensure you update to the latest version of .NET.

<a name=".NET 7"></a>.NET 7

Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- Microsoft.NETCore.App.Runtime.win-arm64 | >= 7.0.0, <= 7.0.10 | 7.0.11 Microsoft.NETCore.App.Runtime.win-x64 | >= 7.0.0, <= 7.0.10 | 7.0.11 Microsoft.NETCore.App.Runtime.win-x86 | >= 7.0.0, <= 7.0.10 | 7.0.11

<a name=".NET 6"></a>.NET 6

Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- Microsoft.NETCore.App.Runtime.win-arm64 | >= 6.0.0, <= 6.0.21 | 6.0.22 Microsoft.NETCore.App.Runtime.win-x64 | >= 6.0.0, <= 6.0.21 | 6.0.22 Microsoft.NETCore.App.Runtime.win-x86 | >= 6.0.0, <= 6.0.21 | 6.0.22

Advisory FAQ

<a name="how-affected"></a>How do I know if I am affected?

If you have a runtime or SDK with a version listed, or an affected package listed in affected software, you're exposed to the vulnerability.

<a name="how-fix"></a>How do I fix the issue?

To fix the issue please install the latest version of .NET 6.0 or .NET 7.0. If you have installed one or more .NET SDKs through Visual Studio, Visual Studio will prompt you to update Visual Studio, which will also update your .NET SDKs. If you are using one of the affected packages, please update to the patched version listed above. If you have .NET 6.0 or greater installed, you can list the versions you have installed by running the dotnet --info command. You will see output like the following;

.NET Core SDK (reflecting any global.json):

Version: 6.0.300 Commit: 8473146e7d

Runtime Environment:

OS Name: Windows OS Version: 10.0.18363 OS Platform: Windows RID: win10-x64 Base Path: C:\Program Files\dotnet\sdk\6.0.300\

Host (useful for support):

Version: 6.0.5 Commit: 8473146e7d

.NET Core SDKs installed:

6.0.300 [C:\Program Files\dotnet\sdk]

.NET Core runtimes installed:

Microsoft.AspNetCore.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.NETCore.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.WindowsDesktop.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

To install additional .NET Core runtimes or SDKs: https://aka.ms/dotnet-download

If you're using .NET 7.0, you should download and install Runtime 7.0.11 or SDK 7.0.111 (for Visual Studio 2022 v17.4) from https://dotnet.microsoft.com/download/dotnet-core/7.0. If you're using .NET 6.0, you should download and install Runtime 6.0.22 or SDK 6.0.317 (for Visual Studio 2022 v17.2) from https://dotnet.microsoft.com/download/dotnet-core/6.0.

.NET 6.0 and and .NET 7.0 updates are also available from Microsoft Update. To access this either type "Check for updates" in your Windows search, or open Settings, choose Update & Security and then click Check for Updates.

Once you have installed the updated runtime or SDK, restart your apps for the update to take effect.

Additionally, if you've deployed self-contained applications targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.

Other Information

Reporting Security Issues

If you have found a potential security issue in .NET 6.0 or .NET 7.0, please email details to secure@microsoft.com. Reports may qualify for the Microsoft .NET Core & .NET 5 Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at <https://aka.ms/corebounty>.

Support

You can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime and https://github.com/dotnet/aspnet/. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue.

Disclaimer

The information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

External Links

CVE-2023-36793

Revisions

V1.0 (September 12, 2023): Advisory published.

Version 1.0

Last Updated 2023-09-12

Microsoft Security Advisory CVE-2023-36794: .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 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 Microsoft.DiaSymReader.Native.amd64.dll when reading a corrupted PDB file which may lead to remote code execution. This issue only affects Windows systems.

Note: The vulnerabilities CVE-2023-36792, CVE-2023-36793, CVE-2023-36792, CVE-2023-36796 are all resolved by a single patch. Get affected software to resolve all of them.

Discussion

Discussion for this issue can be found at https://github.com/dotnet/runtime/issues/91946

<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 following package versions, ensure you update to the latest version of .NET.

<a name=".NET 7"></a>.NET 7

Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- Microsoft.NETCore.App.Runtime.win-arm64 | >= 7.0.0, <= 7.0.10 | 7.0.11 Microsoft.NETCore.App.Runtime.win-x64 | >= 7.0.0, <= 7.0.10 | 7.0.11 Microsoft.NETCore.App.Runtime.win-x86 | >= 7.0.0, <= 7.0.10 | 7.0.11

<a name=".NET 6"></a>.NET 6

Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- Microsoft.NETCore.App.Runtime.win-arm64 | >= 6.0.0, <= 6.0.21 | 6.0.22 Microsoft.NETCore.App.Runtime.win-x64 | >= 6.0.0, <= 6.0.21 | 6.0.22 Microsoft.NETCore.App.Runtime.win-x86 | >= 6.0.0, <= 6.0.21 | 6.0.22

Advisory FAQ

<a name="how-affected"></a>How do I know if I am affected?

If you have a runtime or SDK with a version listed, or an affected package listed in affected software, you're exposed to the vulnerability.

<a name="how-fix"></a>How do I fix the issue?

To fix the issue please install the latest version of .NET 6.0 or .NET 7.0. If you have installed one or more .NET SDKs through Visual Studio, Visual Studio will prompt you to update Visual Studio, which will also update your .NET SDKs. If you are using one of the affected packages, please update to the patched version listed above. If you have .NET 6.0 or greater installed, you can list the versions you have installed by running the dotnet --info command. You will see output like the following;

.NET Core SDK (reflecting any global.json):

Version: 6.0.300 Commit: 8473146e7d

Runtime Environment:

OS Name: Windows OS Version: 10.0.18363 OS Platform: Windows RID: win10-x64 Base Path: C:\Program Files\dotnet\sdk\6.0.300\

Host (useful for support):

Version: 6.0.5 Commit: 8473146e7d

.NET Core SDKs installed:

6.0.300 [C:\Program Files\dotnet\sdk]

.NET Core runtimes installed:

Microsoft.AspNetCore.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.NETCore.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.WindowsDesktop.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

To install additional .NET Core runtimes or SDKs: https://aka.ms/dotnet-download

If you're using .NET 7.0, you should download and install Runtime 7.0.11 or SDK 7.0.111 (for Visual Studio 2022 v17.4) from https://dotnet.microsoft.com/download/dotnet-core/7.0. If you're using .NET 6.0, you should download and install Runtime 6.0.22 or SDK 6.0.317 (for Visual Studio 2022 v17.2) from https://dotnet.microsoft.com/download/dotnet-core/6.0.

.NET 6.0 and and .NET 7.0 updates are also available from Microsoft Update. To access this either type "Check for updates" in your Windows search, or open Settings, choose Update & Security and then click Check for Updates.

Once you have installed the updated runtime or SDK, restart your apps for the update to take effect.

Additionally, if you've deployed self-contained applications targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.

Other Information

Reporting Security Issues

If you have found a potential security issue in .NET 6.0 or .NET 7.0, please email details to secure@microsoft.com. Reports may qualify for the Microsoft .NET Core & .NET 5 Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at <https://aka.ms/corebounty>.

Support

You can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime and https://github.com/dotnet/aspnet/. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue.

Disclaimer

The information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

External Links

CVE-2023-36794

Revisions

V1.0 (September 12, 2023): Advisory published.

Version 1.0

Last Updated 2023-09-12

Microsoft Security Advisory CVE-2023-36796: .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 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 Microsoft.DiaSymReader.Native.amd64.dll when reading a corrupted PDB file which may lead to remote code execution. This issue only affects Windows systems.

Note: The vulnerabilities CVE-2023-36792, CVE-2023-36793, CVE-2023-36792, CVE-2023-36796 are all resolved by a single patch. Get affected software to resolve all of them.

Discussion

Discussion for this issue can be found at https://github.com/dotnet/runtime/issues/91948

<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 following package versions, ensure you update to the latest version of .NET.

<a name=".NET 7"></a>.NET 7

Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- Microsoft.NETCore.App.Runtime.win-arm64 | >= 7.0.0, <= 7.0.10 | 7.0.11 Microsoft.NETCore.App.Runtime.win-x64 | >= 7.0.0, <= 7.0.10 | 7.0.11 Microsoft.NETCore.App.Runtime.win-x86 | >= 7.0.0, <= 7.0.10 | 7.0.11

<a name=".NET 6"></a>.NET 6

Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- Microsoft.NETCore.App.Runtime.win-arm64 | >= 6.0.0, <= 6.0.21 | 6.0.22 Microsoft.NETCore.App.Runtime.win-x64 | >= 6.0.0, <= 6.0.21 | 6.0.22 Microsoft.NETCore.App.Runtime.win-x86 | >= 6.0.0, <= 6.0.21 | 6.0.22

Advisory FAQ

<a name="how-affected"></a>How do I know if I am affected?

If you have a runtime or SDK with a version listed, or an affected package listed in affected software, you're exposed to the vulnerability.

<a name="how-fix"></a>How do I fix the issue?

To fix the issue please install the latest version of .NET 6.0 or .NET 7.0. If you have installed one or more .NET SDKs through Visual Studio, Visual Studio will prompt you to update Visual Studio, which will also update your .NET SDKs. If you are using one of the affected packages, please update to the patched version listed above. If you have .NET 6.0 or greater installed, you can list the versions you have installed by running the dotnet --info command. You will see output like the following;

.NET Core SDK (reflecting any global.json):

Version: 6.0.300 Commit: 8473146e7d

Runtime Environment:

OS Name: Windows OS Version: 10.0.18363 OS Platform: Windows RID: win10-x64 Base Path: C:\Program Files\dotnet\sdk\6.0.300\

Host (useful for support):

Version: 6.0.5 Commit: 8473146e7d

.NET Core SDKs installed:

6.0.300 [C:\Program Files\dotnet\sdk]

.NET Core runtimes installed:

Microsoft.AspNetCore.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.NETCore.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.WindowsDesktop.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

To install additional .NET Core runtimes or SDKs: https://aka.ms/dotnet-download

If you're using .NET 7.0, you should download and install Runtime 7.0.11 or SDK 7.0.111 (for Visual Studio 2022 v17.4) from https://dotnet.microsoft.com/download/dotnet-core/7.0. If you're using .NET 6.0, you should download and install Runtime 6.0.22 or SDK 6.0.317 (for Visual Studio 2022 v17.2) from https://dotnet.microsoft.com/download/dotnet-core/6.0.

.NET 6.0 and and .NET 7.0 updates are also available from Microsoft Update. To access this either type "Check for updates" in your Windows search, or open Settings, choose Update & Security and then click Check for Updates.

Once you have installed the updated runtime or SDK, restart your apps for the update to take effect.

Additionally, if you've deployed self-contained applications targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.

Other Information

Reporting Security Issues

If you have found a potential security issue in .NET 6.0 or .NET 7.0, please email details to secure@microsoft.com. Reports may qualify for the Microsoft .NET Core & .NET 5 Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at <https://aka.ms/corebounty>.

Support

You can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime and https://github.com/dotnet/aspnet/. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue.

Disclaimer

The information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

External Links

CVE-2023-36796

Revisions

V1.0 (September 12, 2023): Advisory published.

Version 1.0

Last Updated 2023-09-12

.NET Core and Visual Studio Denial of Service Vulnerability

Visual Studio Elevation of Privilege Vulnerability

ASP.NET Core Denial of Service Vulnerability

.NET, .NET Framework, and Visual Studio Elevation of Privilege Vulnerability

Microsoft Security Advisory CVE-2023-36558: .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 6.0, ASP.NET Core 7.0 and, ASP.NET Core 8.0 RC2. This advisory also provides guidance on what developers can do to update their applications to address this vulnerability.

A security feature bypass vulnerability exists in ASP.NET where an unauthenticated user is able to bypass validation on Blazor server forms which could trigger unintended actions.

Announcement

Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/288

<a name="mitigation-factors"></a>Mitigation factors

This vulnerability only affects ASP.NET Core Blazor apps. Other application types, including ASP.NET Core apps which do not utilize Blazor, are not affected.

<a name="affected-software"></a>Affected software

Any ASP.NET Core Blazor 6.0 application running on .NET 6.0.24 or earlier. Any ASP.NET Core Blazor 7.0 application running on .NET 7.0.13 or earlier. Any ASP.NET Core Blazor 8.0 application running on .NET 8.0 RC2.

If your application uses the following package versions, ensure you update to the latest version of .NET.

<a name=".NET 7"></a>.NET 8.0

Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- Microsoft.AspNetCore.Components | 8.0.0-rc.2.23480.2 | 8.0.0

<a name=".NET 7"></a>.NET 7.0

Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- Microsoft.AspNetCore.Components | >= 7.0.0, < 7.0.13> | 7.0.14

<a name=".NET 7"></a>.NET 6.0

Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- Microsoft.AspNetCore.Components | >= 6.0.0, < 6.0.24 | 6.0.25

Advisory FAQ

<a name="how-affected"></a>How do I know if I am affected?

If you have a runtime or SDK with a version listed, or an affected package listed in affected software, you're exposed to the vulnerability.

<a name="how-fix"></a>How do I fix the issue?

To fix the issue please install the latest version of .NET 6.0 or .NET 7.0. If you have installed one or more .NET SDKs through Visual Studio, Visual Studio will prompt you to update Visual Studio, which will also update your .NET SDKs. If you are using one of the affected packages, please update to the patched version listed above. If you have .NET 6.0 or greater installed, you can list the versions you have installed by running the dotnet --info command. You will see output like the following;

.NET Core SDK (reflecting any global.json):

Version: 7.0.200 Commit: 8473146e7d

Runtime Environment:

OS Name: Windows OS Version: 10.0.18363 OS Platform: Windows RID: win10-x64 Base Path: C:\Program Files\dotnet\sdk\7.0.300\

Host (useful for support):

Version: 76.0.5 Commit: 8473146e7d

.NET Core SDKs installed:

7.0.200 [C:\Program Files\dotnet\sdk]

.NET Core runtimes installed:

Microsoft.AspNetCore.App 7.0.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.NETCore.App 7.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.WindowsDesktop.App 7.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

To install additional .NET Core runtimes or SDKs: https://aka.ms/dotnet-download

If you're using .NET 8.0, you should download and install .NET 8.0.0 Runtime or .NET 8.0.100 SDK (for Visual Studio 2022 v17.8) from https://dotnet.microsoft.com/download/dotnet-core/8.0. If you're using .NET 7.0, you should download and install Runtime 7.0.14 or SDK 7.0.114 (for Visual Studio 2022 v17.4) from https://dotnet.microsoft.com/download/dotnet-core/7.0. If you're using .NET 6.0, you should download and install Runtime 6.0.25 or SDK 6.0.317 (for Visual Studio 2022 v17.2) from https://dotnet.microsoft.com/download/dotnet-core/6.0.

.NET 7.0 updates are also available from Microsoft Update. To access this either type "Check for updates" in your Windows search, or open Settings, choose Update & Security and then click Check for Updates.

Once you have installed the updated runtime or SDK, restart your apps for the update to take effect.

Additionally, if you've deployed self-contained applications targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.

Other Information

Reporting Security Issues

If you have found a potential security issue in .NET 8.0 or .NET 7.0 or .NET 6.0, please email details to secure@microsoft.com. Reports may qualify for the Microsoft .NET Core & .NET 5 Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at <https://aka.ms/corebounty>.

Support

You can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime and https://github.com/dotnet/aspnet/. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue.

Disclaimer

The information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

External Links

CVE-2023-36558

Revisions

V1.0 (November 14, 2023): Advisory published.

Version 1.0

Last Updated 2023-11-14

Visual Studio Denial of Service Vulnerability

Information Disclosure: MD.SqlClient(MDS) & System.data.SQLClient (SDS) - client library supports establishing non-ssl TCP connection

Description Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 6.0, .NET 7.0 and .NET 8.0. This advisory also provides guidance on what developers can do to update their applications to address this vulnerability.

A security feature bypass vulnerability exists when Microsoft .NET Framework-based applications use X.509 chain building APIs but do not completely validate the X.509 certificate due to a logic flaw. An attacker could present an arbitrary untrusted certificate with malformed signatures, triggering a bug in the framework. The framework will correctly report that X.509 chain building failed, but it will return an incorrect reason code for the failure. Applications which utilize this reason code to make their own chain building trust decisions may inadvertently treat this scenario as a successful chain build. This could allow an adversary to subvert the app's typical authentication logic.

Affected software NuGet & NuGet Packages - Any NuGet.exe, NuGet.CommandLine, NuGet.Packaging 6.8.0 version or earlier. - Any NuGet.exe, NuGet.CommandLine, NuGet.Packaging 6.7.0 version or earlier. - Any NuGet.exe, NuGet.CommandLine, NuGet.Packaging 6.6.1 version or earlier. - Any NuGet.exe, NuGet.CommandLine, NuGet.Packaging 6.4.2 version or earlier. - Any NuGet.exe, NuGet.CommandLine, NuGet.Packaging 6.3.3 version or earlier. - Any NuGet.exe, NuGet.CommandLine, NuGet.Packaging 6.0.5 version or earlier. - Any NuGet.exe, NuGet.CommandLine, NuGet.Packaging 5.11.5 version or earlier.

.NET SDK(s) - Any .NET SDK 6.0.126 or earlier, or 6.0.418 or earlier. - Any .NET SDK 7.0.115 or earlier, or 7.0.312 or earlier, or 7.0.405 or earlier. - Any .NET SDK 8.0.101 or earlier. Patches To fix the issue, please install the latest version of .NET 6.0, .NET 7.0 or .NET 8.0 and NuGet (NuGet.exe, NuGet.CommandLine, NuGet. Packaging versions). If you have installed one or more .NET SDKs through Visual Studio, Visual Studio will prompt you to update Visual Studio, which will also update your .NET SDKs. - If you're using NuGet.exe 6.8.0 or lower, you should download and install 6.8.1 from https://dist.nuget.org/win-x86-commandline/v6.8.1/nuget.exe. - If you're using NuGet.exe 6.7.0 or lower, you should download and install 6.7.1 from https://dist.nuget.org/win-x86-commandline/v6.7.1/nuget.exe. - If you're using NuGet.exe 6.6.1 or lower, you should download and install 6.6.2 from https://dist.nuget.org/win-x86-commandline/v6.6.2/nuget.exe. - If you're using NuGet.exe 6.4.2 or lower, you should download and install 6.4.3 from https://dist.nuget.org/win-x86-commandline/v6.4.3/nuget.exe. - If you're using NuGet.exe 6.3.3 or lower, you should download and install 6.3.4 from https://dist.nuget.org/win-x86-commandline/v6.3.4/nuget.exe. - If you're using NuGet.exe 6.0.5 or lower, you should download and install 6.0.6 from https://dist.nuget.org/win-x86-commandline/v6.0.6/nuget.exe. - If you're using NuGet.exe 5.11.5 or lower, you should download and install 5.11.6 from https://dist.nuget.org/win-x86-commandline/v5.11.6/nuget.exe. - If you're using .NET 8.0, you should download and install .NET 8.0.102 SDK (for Visual Studio 2022 v17.8) from https://dotnet.microsoft.com/download/dotnet-core/8.0 . - If you're using .NET 7.0, you should download and install SDK 7.0.116 (for Visual Studio 2022 v17.4), or SDK 7.0.313 (for Visual Studio 2022 v17.6), or 7.0.406 (for Visual Studio 2022 v17.7) from https://dotnet.microsoft.com/download/dotnet-core/7.0 . - If you're using .NET 6.0, you should download and install SDK 6.0.127 or SDK 6.0.419 (for Visual Studio 2022 v17.3) from https://dotnet.microsoft.com/download/dotnet-core/6.0 .

Other details Announcement for this issue can be found at https://github.com/NuGet/Announcements/issues/71

MSRC details for this can be found at CVE-2024-0057 - Security Update Guide - Microsoft - NET, .NET Framework, and Visual Studio Security Feature Bypass Vulnerability

.NET Spoofing Vulnerability

Visual Studio Remote Code Execution Vulnerability

Impact The MsQuic server application or process will crash, resulting in a denial of service.

Patches The following patch was made:

- Don't Allow Version Negotiation Packets for Server Connections - https://github.com/microsoft/msquic/commit/3226cff07d22662f16fc98d605656860e64cd343

Workarounds Beyond upgrading to the patched versions, there is no other workaround. You must upgrade or disable MsQuic functionality.

Git for Windows is the Windows port of the revision control system Git. Prior to Git for Windows version 2.39.2, when gitk is run on Windows, it potentially runs executables from the current directory inadvertently, which can be exploited with some social engineering to trick users into running untrusted code. A patch is available in version 2.39.2. As a workaround, avoid using gitk (or Git GUI's "Visualize History" functionality) in clones of untrusted repositories.

Git for Windows is the Windows port of the revision control system Git. Prior to Git for Windows version 2.39.2, by carefully crafting DLL and putting into a subdirectory of a specific name living next to the Git for Windows installer, Windows can be tricked into side-loading said DLL. This potentially allows users with local write access to place malicious payloads in a location where automated upgrades might run the Git for Windows installer with elevation. Version 2.39.2 contains a patch for this issue. Some workarounds are available. Never leave untrusted files in the Downloads folder or its sub-folders before executing the Git for Windows installer, or move the installer into a different directory before executing it.

.NET and Visual Studio Information Disclosure Vulnerability

.NET and Visual Studio Remote Code Execution Vulnerability

.NET Kestrel: Denial of Service processing X509 Certificates

When a .NET application is internet-facing and accepts an X509 client certificate for mutual TLS, a malicious client certificate can cause unbounded CPU usage.

Microsoft ODBC Driver for SQL Server Remote Code Execution Vulnerability

Microsoft ODBC Driver for SQL Server Remote Code Execution Vulnerability

Microsoft ODBC Driver for SQL Server Remote Code Execution Vulnerability

Microsoft ODBC Driver for SQL Server Remote Code Execution Vulnerability

Microsoft ODBC and OLE DB Remote Code Execution Vulnerability

An Out-Of-Bounds Write Vulnerability in Autodesk® FBX® SDK version 2020 or prior may lead to code execution through maliciously crafted FBX files or information disclosure.

A user may be tricked into opening a malicious FBX file that may exploit a heap buffer overflow vulnerability in Autodesk® FBX® SDK 2020 or prior which may lead to code execution.