Denial of service in ASP .NET and Visual Studio

1) Input validation error

EUVDB-ID: #VU79145

Risk: High

CVSSv3.1: 7.2 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2023-38180

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. A remote attacker can send  specially crafted input to the application and perform a denial of service (DoS) attack.

Note, the vulnerability is being actively exploited in the wild.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

.NET: 6.0.0 - 7.0.9

Visual Studio: 17.2.0 17.2.32505.173 - 17.6.5 17.6.33829.357

ASP.NET Core: before 2.1.40

CPE2.3

• cpe:2.3:a:microsoft:.net:6.0.20:*:*:*:*:*:*:
• cpe:2.3:a:microsoft:.net:7.0.9:*:*:*:*:*:*:
• cpe:2.3:a:microsoft:visual_studio:17.2.17:17.2.33829.164:*:*:*:*:*:
• cpe:2.3:a:microsoft:visual_studio:17.4.9:17.4.33829.165:*:*:*:*:*:
• cpe:2.3:a:microsoft:visual_studio:17.6.5:17.6.33829.357:*:*:*:*:*:
• cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-38180

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?

Yes. This vulnerability is being exploited in the wild.