KLA11934 Multiple vulnerabilities in Microsoft Developer Tools

Multiple vulnerabilities were found in Microsoft Developer Tools. Malicious users can exploit these vulnerabilities to cause denial of service, execute arbitrary code, gain privileges.

Below is a complete list of vulnerabilities:

1. A denial of service vulnerability in ASP.NET Core can be exploited remotely via specially crafted requests to cause denial of service.
2. A remote code execution vulnerability in .NET Framework can be exploited remotely via specially crafted file to execute arbitrary code.
3. A remote code execution vulnerability in Visual Studio Code can be exploited remotely to execute arbitrary code.
4. An elevation of privilege vulnerability in ASP.NET and .NET can be exploited remotely via specially crafted request to gain privileges.

Original advisories

CVE-2020-1597

CVE-2020-1046

CVE-2020-0604

CVE-2020-1476

Related products

Microsoft-.NET-Framework

Microsoft-Visual-Studio

CVE list

CVE-2020-1597 critical

CVE-2020-1046 critical

CVE-2020-0604 critical

CVE-2020-1476 high

KB list

4571692

4571694

4571709

4571741

4569751

4569748

4569749

4569746

4569745

4570506

4570507

4570502

4570500

4570501

4570505

4570509

4570508

4570503

Solution

Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)

Impacts

• ACE

Arbitrary code execution. Exploitation of vulnerabilities with this impact can lead to executing by abuser any code or commands at vulnerable machine or process.

• DoS

Denial of service. Exploitation of vulnerabilities with this impact can lead to loss of system availability or critical functional fault.

• SB

Security bypass. Exploitation of vulnerabilities with this impact can lead to performing actions restricted by current security settings.

• PE

Privilege escalation. Exploitation of vulnerabilities with this impact can lead to performing by abuser actions, which are normally disallowed for current role.

Affected Products

• Microsoft .NET Framework 3.5.1Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2Microsoft .NET Framework 4.8Microsoft Visual Studio 2019 version 16.0Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8)Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2Microsoft .NET Framework 4.6ASP.NET Core 3.1Microsoft .NET Framework 2.0 Service Pack 2Visual Studio CodeASP.NET Core 2.1Microsoft .NET Framework 3.5 AND 4.8Microsoft .NET Framework 3.5 AND 4.7.2Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)Microsoft .NET Framework 4.5.2Microsoft .NET Framework 3.5Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)