#VU83143 Input validation error in Microsoft products - CVE-2023-36038

Vulnerability identifier: #VU83143

Vulnerability risk: Medium

CVSSv4.0: 8.7 [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:A/U:Green]

CVE-ID: CVE-2023-36038

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Visual Studio
Universal components / Libraries / Software for developers
ASP.NET Core
Universal components / Libraries / Software for developers
.NET
Other software / Other software solutions

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

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Visual Studio: 2022 version 17.2, 2022 version 17.4, 2022 version 17.6, 2022 version 17.7

ASP.NET Core: 8.0

.NET: 8.0.0

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-36038

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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?

Yes. This vulnerability is being exploited in the wild.