Input validation error in Microsoft products - CVE-2020-1108

Vulnerability identifier: #VU27823

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-1108

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to the .NET Core or .NET Framework improperly handles web requests. A remote attacker can send specially crafted requests to the application and perform a denial of service (DoS) attack.

Microsoft .NET Framework
ASP.NET Core MVC
Visual Studio
rh-dotnet21 (Red Hat package)
rh-dotnet21-dotnet (Red Hat package)
rh-dotnet31-dotnet (Red Hat package)
dotnet3.1 (Red Hat package)
dotnet-runtime-2.1
dotnet-host-fxr-2.1
dotnet (Red Hat package)
dotnet-sdk-2.1.5xx
dotnet-sdk-2.1
dotnet-runtime-3.1
dotnet-hostfxr-3.1
dotnet-apphost-pack-3.1
aspnetcore-targeting-pack-3.1
aspnetcore-runtime-3.1
dotnet-targeting-pack-3.1
dotnet-sdk-3.1
dotnet-sdk-3.1-source-built-artifacts
dotnet-templates-3.1
Anolis OS
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Robotic Process Automation for Cloud Pak
IBM Robotic Process Automation

Install updates from vendor's website.

rh-dotnet21 (Red Hat package) - addressed in versions 2.1-17.el7, 2.1-18.el7
rh-dotnet21-dotnet (Red Hat package) - addressed in versions 2.1.514-2.el7, 2.1.515-1.el7
rh-dotnet31-dotnet (Red Hat package) - addressed in versions 3.1.104-2.el7, 3.1.105-1.el7
dotnet3.1 (Red Hat package) - addressed in versions 3.1.104-2.el8_2, 3.1.105-2.el8_2
dotnet-runtime-2.1 - update to 2.1.30-1
dotnet-host-fxr-2.1 - update to 2.1.30-1
dotnet (Red Hat package) - addressed in versions 2.1.514-2.el8_2, 2.1.515-1.el8_2
dotnet-sdk-2.1.5xx - update to 2.1.526-1
dotnet-sdk-2.1 - update to 2.1.526-1
dotnet-runtime-3.1 - update to 3.1.26-1.0.1
dotnet-hostfxr-3.1 - update to 3.1.26-1.0.1
dotnet-apphost-pack-3.1 - update to 3.1.26-1.0.1
aspnetcore-targeting-pack-3.1 - update to 3.1.26-1.0.1
aspnetcore-runtime-3.1 - update to 3.1.26-1.0.1
dotnet-targeting-pack-3.1 - update to 3.1.26-1.0.1
dotnet-sdk-3.1 - update to 3.1.420-1.0.1
dotnet-sdk-3.1-source-built-artifacts - update to 3.1.420-1.0.1
dotnet-templates-3.1 - update to 3.1.420-1.0.1
Robotic Process Automation for Cloud Pak - addressed in versions 21.0.7.16, 23.0.16
IBM Robotic Process Automation - addressed in versions 21.0.7.16, 23.0.16

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1108

• Denial of service in Microsoft .NET Core and .NET Framework
• .NET Core on Red Hat Enterprise Linux 7 update for rh-dotnet21-dotnet
• Red Hat Enterprise Linux 8 update for .NET Core
• Red Hat Enterprise Linux 8 update for dotnet3.1
• .NET Core on Red Hat Enterprise Linux 7 update for rh-dotnet31-dotnet
• Red Hat Enterprise Linux 8 update for .NET Core 3.1
• Red Hat Enterprise Linux 8 update for .NET Core
• .NET Core on Red Hat Enterprise Linux 7 update for rh-dotnet31-dotnet
• .NET Core on Red Hat Enterprise Linux 7 update for rh-dotnet21-dotnet
• Multiple vulnerabilities in IBM Robotic Process Automation
• Anolis OS update for dotnet
• Anolis OS update for dotnet3.1