Denial of service in Microsoft ASP.NET Core

1) Input validation error

EUVDB-ID: #VU45514

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 - Improper input validation

Exploit availability: No

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 - 16.7.0 16.7.30330.147

CPE2.3

• cpe:2.3:a:microsoft:aspnet_core_mvc:2.1:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:aspnet_core_mvc:3.1:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:visual_studio:15.0:26228.09:*:*:*:*:*:*
• cpe:2.3:a:microsoft:visual_studio:15.6.6:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:visual_studio:15.7.5:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:visual_studio:15.8:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:visual_studio:15.9:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:visual_studio:16.0.0:16.0.28729.10:*:*:*:*:*:*
• cpe:2.3:a:microsoft:visual_studio:16.1.0:16.1.28917.181:*:*:*:*:*:*
• cpe:2.3:a:microsoft:visual_studio:16.2.0:16.2.29123.88:*:*:*:*:*:*

External links

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

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.