#VU45514 Input validation error in ASP.NET Core MVC and Visual Studio - CVE-2020-1597

Vulnerability identifier: #VU45514

Vulnerability risk: Medium

CVSSv4.0: 6.6 [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/E:U/U:Green]

CVE-ID: CVE-2020-1597

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

Vendor: Microsoft

Description

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

The vulnerability exists due to insufficient validation of user-supplied input in the ASP.NET Core. A remote attacker can send specially crafted requests to the ASP.NET Core 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 - 3.1

Visual Studio: 15.0 26228.09, 15.6.6, 15.7 Preview - 15.7.5, 15.8 Preview - 15.8, 15.9, 16.0.0 16.0.28729.10, 16.1.0 16.1.28917.181, 16.2.0 16.2.29123.88, 16.3.0 16.3.29318.209, 16.4.0 16.4.29519.181, 16.5.0 16.5.29911.84, 16.6.0 16.6.30114.105, 16.7.0 16.7.30330.147

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External links
https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2020-1597

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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.