Denial of service in Microsoft ASP.NET Core

1) Input validation error

EUVDB-ID: #VU27827

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-2020-1161

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 the ASP.NET Core improperly handles web requests. A remote attacker can send a specially crafted request and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Visual Studio: 15.9 - 16.4.0 16.4.29519.181

ASP.NET Core MVC: 3.1

CPE2.3

• 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:16.4.0:16.4.29519.181:*:*:*:*:*:*
• cpe:2.3:a:microsoft:aspnet_core_mvc:3.1:*:*:*:*:*:*:*

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1161

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.