CVE-2023-36558

Ubuntu Security Notice 6480-1 - Barry Dorrans discovered that .NET did not properly implement certain security features for Blazor server forms. An attacker could possibly use this issue to bypass validation, which could trigger unintended actions. Piotr Bazydlo discovered that .NET did not properly handle untrusted URIs provided to System.Net.WebRequest.Create. An attacker could possibly use this issue to inject arbitrary commands to backend FTP servers.

Red Hat Security Advisory 2023-7259-01 - An update for.NET 6.0 is now available for Red Hat Enterprise Linux 7. Issues addressed include a bypass vulnerability.

Red Hat Security Advisory 2023-7258-01 - An update for dotnet6.0 is now available for Red Hat Enterprise Linux 8. Issues addressed include a bypass vulnerability.

Red Hat Security Advisory 2023-7257-01 - An update for dotnet6.0 is now available for Red Hat Enterprise Linux 9. Issues addressed include a bypass vulnerability.

Red Hat Security Advisory 2023-7256-01 - An update for dotnet7.0 is now available for Red Hat Enterprise Linux 8. Issues addressed include a bypass vulnerability.

Red Hat Security Advisory 2023-7255-01 - An update for dotnet7.0 is now available for Red Hat Enterprise Linux 9. Issues addressed include a bypass 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...