Vulnerability identifier: #VU27823

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-1108

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ASP.NET Core MVC
Universal components / Libraries / Software for developers
Visual Studio
Universal components / Libraries / Software for developers
Microsoft .NET Framework
Server applications / Frameworks for developing and running applications

Vendor: Microsoft

Description

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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ASP.NET Core MVC: 2.1.0

Visual Studio: 15.9, 16.0.0 16.0.28729.10, 16.4.0 16.4.29519.181

Microsoft .NET Framework: 4.6, 4.8, 2.0, 3.0, 3.5, 3.5.1, 4.5.2

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1108

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.