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CVSS: 6.5EPSS: 0%CPEs: 7EXPL: 0

.NET Core and Visual Studio Denial of Service Vulnerability Una Vulnerabilidad de Denegación de Servicio de .NET Core y Visual Studio A flaw was found in dotnet. A recursion error when building X.509 certificate chains can lead to a stack overflow which could crash the system. The highest threat from this vulnerability is to system availability. • https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1721 https://access.redhat.com/security/cve/CVE-2021-1721 https://bugzilla.redhat.com/show_bug.cgi?id=1926918 • CWE-674: Uncontrolled Recursion •

CVSS: 7.5EPSS: 1%CPEs: 7EXPL: 0

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests. An attacker who successfully exploited this vulnerability could cause a denial of service against an ASP.NET Core web application. The vulnerability can be exploited remotely, without authentication. A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to the ASP.NET Core application. The update addresses the vulnerability by correcting how the ASP.NET Core web application handles web requests. Se presenta una vulnerabilidad de denegación de servicio cuando ASP.NET Core maneja inapropiadamente las peticiones web, también se conoce como "ASP.NET Core Denial of Service Vulnerability". A flaw was found in ASP.NET Core. • https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WH5FQ5VT3JGHXFXOETHCTBWJUIAPGHHT https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZW4CBI26KSO3PRL3HLVVISXPPOYUHSXO https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1597 https://access.redhat.com/security/cve/CVE-2020-1597 https://bugzilla.redhat.com/show_bug.cgi?id=1861110 • CWE-400: Uncontrolled Resource Consumption •

CVSS: 8.8EPSS: 91%CPEs: 88EXPL: 6

A remote code execution vulnerability exists in .NET Framework, Microsoft SharePoint, and Visual Studio when the software fails to check the source markup of XML file input, aka '.NET Framework, SharePoint Server, and Visual Studio Remote Code Execution Vulnerability'. Se presenta una vulnerabilidad de ejecución de código remota en .NET Framework, Microsoft SharePoint y Visual Studio cuando el software presenta un fallo al comprobar el marcado de origen de una entrada de archivo XML, también se conoce como ".NET Framework, SharePoint Server, and Visual Studio Remote Code Execution Vulnerability" It was discovered that .NET Core did not properly check the source markup of XML files. A remote, unauthenticated attacker could possibly exploit this flaw to execute arbitrary code by sending specially crafted requests to an application parsing certain kinds of XML files or an ASP.NET Core application. Microsoft .NET Framework, Microsoft SharePoint, and Visual Studio contain a remote code execution vulnerability when the software fails to check the source markup of XML file input. Successful exploitation allows an attacker to execute code in the context of the process responsible for deserialization of the XML content. • https://www.exploit-db.com/exploits/48747 https://www.exploit-db.com/exploits/50151 http://packetstormsecurity.com/files/158694/SharePoint-DataSet-DataTable-Deserialization.html http://packetstormsecurity.com/files/158876/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html http://packetstormsecurity.com/files/163644/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1147 https://www.exploitalert.com/view-details.html?id=35992 h • CWE-502: Deserialization of Untrusted Data •

CVSS: 7.5EPSS: 0%CPEs: 132EXPL: 0

A denial of service vulnerability exists when .NET Core or .NET Framework improperly handles web requests, aka '.NET Core & .NET Framework Denial of Service Vulnerability'. Se presenta una vulnerabilidad denegación de servicio cuando .NET Core o .NET Framework manejan inapropiadamente las peticiones web, también se conoce como ".NET Core & .NET Framework Denial of Service Vulnerability" An integer overflow condition was found in dotnet and dotnet3.1's BinaryReader Read7BitEncodedInt() method. This method is used by BinaryReader's ReadString() method, and given a certain input, and cause a denial of service to dotnet applications using BinaryReader. The exploitation of this flaw depends on the application but does not inherently require the attacker to be authenticated or have any specific privileges. An attacker could exploit this flaw remotely via the internet by sending crafted data to a dotnet application that is passed into Read7BitEncodedInt(), resulting in a denial of service when the output is used by ReadString(). • https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1108 https://access.redhat.com/security/cve/CVE-2020-1108 https://bugzilla.redhat.com/show_bug.cgi?id=1827643 • CWE-190: Integer Overflow or Wraparound •

CVSS: 9.3EPSS: 2%CPEs: 5EXPL: 0

A remote code execution vulnerability exists in ASP.NET Core software when the software fails to handle objects in memory.An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user, aka 'ASP.NET Core Remote Code Execution Vulnerability'. Se presenta una vulnerabilidad de ejecución de código remota en el software ASP.NET Core cuando el software presenta un fallo al manejar los objetos en memoria. Un atacante que explotó con éxito la vulnerabilidad podría ejecutar código arbitrario en el contexto del usuario actual, también se conoce como "ASP.NET Core Remote Code Execution Vulnerability". A memory corruption flaw was found in ASP.NET core. A client can write to freed memory on the server which could result in undefined behavior. • https://access.redhat.com/errata/RHSA-2020:0130 https://access.redhat.com/errata/RHSA-2020:0134 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0603 https://access.redhat.com/security/cve/CVE-2020-0603 https://bugzilla.redhat.com/show_bug.cgi?id=1789624 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-787: Out-of-bounds Write •