KLA12257 Multiple vulnerabilities in Microsoft Developer Tools

Multiple vulnerabilities were found in Microsoft Developer Tools. Malicious users can exploit these vulnerabilities to obtain sensitive information, cause denial of service.

Below is a complete list of vulnerabilities:

1. An information disclosure vulnerability in .NET Core and Visual Studio can be exploited remotely to obtain sensitive information.
2. An information disclosure vulnerability in ASP.NET Core and Visual Studio can be exploited remotely to obtain sensitive information.
3. A denial of service vulnerability in .NET Core and Visual Studio can be exploited remotely to cause denial of service.

Original advisories

CVE-2021-34485

CVE-2021-34532

CVE-2021-26423

Related products

Microsoft-.NET-Framework

Microsoft-Visual-Studio

Microsoft-ASP.NET-MVC

CVE list

CVE-2021-34485 unknown

CVE-2021-34532 unknown

CVE-2021-26423 unknown

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

• OSI

Obtain sensitive information. Exploitation of vulnerabilities with this impact can lead to capturing by abuser information, critical for user or system.

• DoS

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

Affected Products

• .NET 5.0.NET Core 2.1.NET Core 3.1